66 changed files with 809 additions and 2344 deletions
--- a/.gitea/workflows/build-pr.yml
+++ b/.gitea/workflows/build-pr.yml
@ -1,45 +0,0 @@
-name: Build PR
-
-on: # test
-  pull_request:
-    types:
-      - opened
-      - reopened
-      - synchronize
-      - ready_for_review
-
-jobs:
-  build:
-    name: Build and analyze
-    runs-on: ubuntu-latest
-    
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
-      - name: Set up JDK 21
-        uses: actions/setup-java@v1
-        with:
-          java-version: 21
-      - name: Cache SonarQube packages
-        uses: actions/cache@v4
-        with:
-          path: ~/.sonar/cache
-          key: ${{ runner.os }}-sonar
-          restore-keys: ${{ runner.os }}-sonar
-      - name: Cache Gradle packages
-        uses: actions/cache@v4
-        with:
-          path: ~/.gradle/caches
-          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
-          restore-keys: ${{ runner.os }}-gradle
-      - name: Coverage
-        env:
-          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-          SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
-        run: ./gradlew test jacocoTestReport sonar
-      - name: Build and analyze
-        env:
-          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-          SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
-        run: ./gradlew build sonar --info -Dsonar.pullrequest.branch=${{ github.event.pull_request.head.ref }} -Dsonar.pullrequest.base=${{ github.event.pull_request.base.ref }} -Dsonar.pullrequest.key=${{github.event.pull_request.number}}
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@ -5,6 +5,7 @@ on:
    branches:
      - main

+
 jobs:
  build:
    name: Build and analyze
@ -14,27 +15,22 @@ jobs:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
-      - name: Set up JDK 21
+      - name: Set up JDK 17
        uses: actions/setup-java@v1
        with:
-          java-version: 21
+          java-version: 17
      - name: Cache SonarQube packages
-        uses: actions/cache@v4
+        uses: actions/cache@v1
        with:
          path: ~/.sonar/cache
          key: ${{ runner.os }}-sonar
          restore-keys: ${{ runner.os }}-sonar
      - name: Cache Gradle packages
-        uses: actions/cache@v4
+        uses: actions/cache@v1
        with:
          path: ~/.gradle/caches
          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
          restore-keys: ${{ runner.os }}-gradle
-      - name: Coverage
-        env:
-          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-          SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
-        run: ./gradlew test jacocoTestReport sonar
      - name: Build and analyze
        env:
          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
--- a/requests/GetBearerToken.http
+++ b/requests/GetBearerToken.http
--- a/Readme.md
+++ b/Readme.md
@ -3,9 +3,6 @@
 ![Gitea Release](https://img.shields.io/gitea/v/release/jank/LF8?gitea_url=https%3A%2F%2Fgit.kjan.de&style=plastic)
 ![Gitea Last Commit](https://img.shields.io/gitea/last-commit/jank/LF8?gitea_url=https%3A%2F%2Fgit.kjan.de&style=plastic)

-## Code analysis coverage issues and results of linting MAY be found here: 
-https://sonarqube.kjan.de/dashboard?id=LF8&codeScope=overall
-
 # Starter für das LF08 Projekt

 ## Requirements
@ -62,7 +59,7 @@ docker compose up
 # Keycloak

 ### Keycloak Token
-1. Auf der Projektebene [GetBearerToken.http](requests/GetBearerToken.http) öffnen.
+1. Auf der Projektebene [GetBearerToken.http](GetBearerToken.http) öffnen.
 2. Neben der Request auf den grünen Pfeil drücken
 3. Aus dem Reponse das access_token kopieren

--- a/build.gradle.kts
+++ b/build.gradle.kts
@ -3,16 +3,7 @@ plugins {
    id("org.springframework.boot") version "3.3.4"
    id("io.spring.dependency-management") version "1.1.6"
    id("checkstyle")
-    id("org.sonarqube") version "5.1.0.4882"
-    id("jacoco")
-}
-
-tasks.jacocoTestReport {
-    dependsOn(tasks.test) // Ensure tests are run before generating the report
-    reports {
-        xml.required = true
-        csv.required = true
-    }
+    id("org.sonarqube") version "5.0.0.4638"
 }

 sonar {
@ -58,28 +49,22 @@ repositories {
    mavenCentral()
 }

-val springDocVersion = "2.6.0"
-val oauth2Version = "3.3.4"
-
 dependencies {
    implementation("org.springframework.boot:spring-boot-starter-data-jpa")
    implementation("org.springframework.boot:spring-boot-starter-web")
    implementation("org.springframework.boot:spring-boot-starter-validation")
-    implementation("org.springdoc:springdoc-openapi-starter-webmvc-ui:$springDocVersion")
-    implementation("org.springframework.boot:spring-boot-starter-security")
-    implementation("org.springframework.boot:spring-boot-starter-oauth2-resource-server:$oauth2Version")
-    implementation("org.springframework.boot:spring-boot-starter-oauth2-client:$oauth2Version")
-
-    testImplementation("com.h2database:h2")
-    testImplementation("org.springframework.boot:spring-boot-starter-test")
-
    compileOnly("org.projectlombok:lombok")
    annotationProcessor("org.projectlombok:lombok")
+    testImplementation("org.springframework.boot:spring-boot-starter-test")
    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+    implementation("org.springframework.boot:spring-boot-starter-security")
+    implementation("org.springframework.boot:spring-boot-starter-oauth2-resource-server:3.3.4")
+    implementation("org.springframework.boot:spring-boot-starter-oauth2-client:3.3.4")
    runtimeOnly("org.postgresql:postgresql")
+    implementation("org.springdoc:springdoc-openapi-starter-webmvc-ui:2.6.0")
+    testImplementation("com.h2database:h2")
 }

 tasks.withType<Test> {
    useJUnitPlatform()
-    finalizedBy(tasks.jacocoTestReport) // Run JaCoCo report after tests
 }
--- a/docker/local/docker-compose.yml
+++ b/docker/local/docker-compose.yml
@ -7,7 +7,7 @@ volumes:
 services:
  postgres_for_lf8_starter:
    container_name: lf8_starter_postgres_container
-    image: postgres:17.0
+    image: postgres:16.4
    volumes:
      - lf8_starter_postgres_data:/var/lib/postgresql/data
    environment:
--- a/requests/project/createProject.http
+++ b/requests/project/createProject.http
@ -6,10 +6,10 @@ Content-Type: application/json
 {
  "name": "name",
  "leading_employee": 1,
-  "employees": [312],
+  "employees": [2, 3],
  "contractor": 4,
  "contractor_name": "Peter File",
  "comment": "goal of project",
-  "start_date": "02.01.2020",
-  "planned_end_date": "01.01.2023"
+  "start_date": "01.01.2000",
+  "planned_end_date": "01.01.2001"
 }
--- a/requests/employee/createEmployee.http
+++ b/requests/employee/createEmployee.http
@ -1,15 +0,0 @@
-POST https://employee.szut.dev/employees
-Authorization: Bearer {{auth_token}}
-Content-Type: application/json
-
-{
-  "firstName": "Jan1",
-  "lastName": "Klattenhoff1",
-  "street": "Pirolweg 171",
-  "postcode": "27777",
-  "city": "Gandakersee1",
-  "phone": "0176849848161",
-  "skillSet": [
-    "1"
-  ]
-}
--- a/requests/employee/deleteEmployee.http
+++ b/requests/employee/deleteEmployee.http
@ -1,2 +0,0 @@
-DELETE https://employee.szut.dev/employees/310
-Authorization: Bearer {{auth_token}}
--- a/requests/employee/getAllEmployees.http
+++ b/requests/employee/getAllEmployees.http
@ -1,2 +0,0 @@
-GET https://employee.szut.dev/employees
-Authorization: Bearer {{auth_token}}
--- a/requests/employee/getEmployee.http
+++ b/requests/employee/getEmployee.http
@ -1,2 +0,0 @@
-GET https://employee.szut.dev/employees/315
-Authorization: Bearer {{auth_token}}
--- a/requests/employee/getProjects.http
+++ b/requests/employee/getProjects.http
@ -1,3 +0,0 @@
-GET http://localhost:8080/employees/315/projects
-Authorization: Bearer {{auth_token}}
-Content-Type: application/json
--- a/requests/project/addEmployeeToProject.http
+++ b/requests/project/addEmployeeToProject.http
@ -1,2 +0,0 @@
-POST http://localhost:8080/projects/1/employees/312
-Authorization: Bearer {{auth_token}}
--- a/requests/project/getAllProjects.http
+++ b/requests/project/getAllProjects.http
@ -1,3 +0,0 @@
-### GET request to example server
-GET http://localhost:8080/projects
-Authorization: Bearer {{auth_token}}
--- a/requests/project/getEmployeesFromProject.http
+++ b/requests/project/getEmployeesFromProject.http
@ -1,2 +0,0 @@
-GET http://localhost:8080/projects/2/employees
-Authorization: Bearer {{auth_token}}
--- a/requests/project/getProject.http
+++ b/requests/project/getProject.http
@ -1,3 +0,0 @@
-### GET request to example server
-GET http://localhost:8080/projects/1
-Authorization: Bearer {{auth_token}}
--- a/requests/project/updateProject.http
+++ b/requests/project/updateProject.http
@ -1,15 +0,0 @@
-### GET request to example server
-PUT http://localhost:8080/projects/1
-Authorization: Bearer {{auth_token}}
-Content-Type: application/json
-
-{
-  "name": "newName",
-  "leading_employee": 2,
-  "employees": [],
-  "contractor": 9,
-  "contractor_name": "New Contractor name",
-  "comment": "new goal of project",
-  "start_date": "01.01.2010",
-  "planned_end_date": "01.01.2021"
-}
--- a/src/main/java/de/szut/lf8_starter/config/OpenAPIConfiguration.java
+++ b/src/main/java/de/szut/lf8_starter/config/OpenAPIConfiguration.java
@ -1,6 +1,7 @@
 package de.szut.lf8_starter.config;


+
 import io.swagger.v3.oas.models.Components;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.info.Info;
@ -32,33 +33,15 @@ public class OpenAPIConfiguration {
                .addServersItem(new Server().url(this.context.getContextPath()))
                .info(new Info()
                        .title("LF8 project starter")
-                        .description("""
-                                ## Auth
+                        .description("\n## Auth\n" +
+                                "\n## Authentication\n" + "\nThis Hello service uses JWTs to authenticate requests. You will receive a bearer token by making a POST-Request in IntelliJ on:\n\n" +
+                                "\n" +
+                                "```\nPOST http://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token\nContent-Type: application/x-www-form-urlencoded\ngrant_type=password&client_id=employee-management-service&username=user&password=test\n```\n" +
+                                "\n" +
+                                "\nor by CURL\n" +
+                                "```\ncurl -X POST 'http://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token'\n--header 'Content-Type: application/x-www-form-urlencoded'\n--data-urlencode 'grant_type=password'\n--data-urlencode 'client_id=employee-management-service'\n--data-urlencode 'username=user'\n--data-urlencode 'password=test'\n```\n" +
+                                "\nTo get a bearer-token in Postman, you have to follow the instructions in \n [Postman-Documentation](https://documenter.getpostman.com/view/7294517/SzmfZHnd).")

-                                ## Authentication
-                                
-                                This Hello service uses JWTs to authenticate requests. You will receive a bearer token by making a POST-Request in IntelliJ on:
-                                
-                                ```
-                                POST http://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token
-                                Content-Type: application/x-www-form-urlencoded
-                                grant_type=password&client_id=employee-management-service&username=user&password=test
-                                ```
-                                
-                                or by CURL:
-                                
-                                ```
-                                curl -X POST 'http://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token' 
-                                --header 'Content-Type: application/x-www-form-urlencoded' 
-                                --data-urlencode 'grant_type=password' 
-                                --data-urlencode 'client_id=employee-management-service' 
-                                --data-urlencode 'username=user' 
-                                --data-urlencode 'password=test'
-                                ```
-                                
-                                To get a bearer-token in Postman, you have to follow the instructions in 
-                                [Postman-Documentation](https://documenter.getpostman.com/view/7294517/SzmfZHnd).
-                                """)
                        .version("0.1"))
                .addSecurityItem(new SecurityRequirement().addList(securitySchemeName))
                .components(
--- a/src/main/java/de/szut/lf8_starter/employee/EmployeeService.java
+++ b/src/main/java/de/szut/lf8_starter/employee/EmployeeService.java
@ -1,73 +0,0 @@
-package de.szut.lf8_starter.employee;
-
-import de.szut.lf8_starter.exceptionHandling.ResourceNotFoundException;
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectRepository;
-import de.szut.lf8_starter.project.dto.employee.GetEmployeeDto;
-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
-import de.szut.lf8_starter.project.mapper.ProjectMapper;
-import org.springframework.http.HttpEntity;
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
-import org.springframework.stereotype.Service;
-import org.springframework.web.client.HttpClientErrorException;
-import org.springframework.web.client.RestTemplate;
-
-import java.util.ArrayList;
-import java.util.List;
-
-@Service
-public class EmployeeService {
-    private final RestTemplate restTemplate;
-    private final ProjectRepository projectRepository;
-    private final ProjectMapper projectMapper;
-
-    public EmployeeService(RestTemplate restTemplate, ProjectRepository projectRepository, ProjectMapper projectMapper) {
-        this.restTemplate = restTemplate;
-        this.projectRepository = projectRepository;
-        this.projectMapper = projectMapper;
-    }
-
-    public boolean employeeExists(String accessToken, Long employeeId) {
-        HttpHeaders headers = new HttpHeaders();
-        headers.setBearerAuth(accessToken.replace("Bearer ", ""));
-
-        HttpEntity<String> requestEntity = new HttpEntity<>(headers);
-
-        String url = "https://employee.szut.dev/employees/" + employeeId;
-
-        try {
-            restTemplate.exchange(url, HttpMethod.GET, requestEntity, String.class);
-        } catch (HttpClientErrorException.NotFound e) {
-            return false;
-        }
-
-        return true;
-    }
-
-    public GetEmployeeDto getEmployee(String accessToken, Long employeeId) {
-        HttpHeaders headers = new HttpHeaders();
-        headers.setBearerAuth(accessToken.replace("Bearer ", ""));
-
-        HttpEntity<String> requestEntity = new HttpEntity<>(headers);
-
-        String url = "https://employee.szut.dev/employees/" + employeeId;
-
-        try {
-            return restTemplate.exchange(url, HttpMethod.GET, requestEntity, GetEmployeeDto.class).getBody();
-        } catch (HttpClientErrorException.NotFound e) {
-            throw new ResourceNotFoundException("Employee not found");
-        }
-    }
-
-    public List<GetProjectDto> getProjects(Long employeeId) {
-        ArrayList<ProjectEntity> projects = this.projectRepository.findAllByEmployeeId(employeeId);
-        ArrayList<GetProjectDto> projectDtos = new ArrayList<>();
-
-        for (ProjectEntity project : projects) {
-            projectDtos.add(this.projectMapper.mapToGetDto(project));
-        }
-
-        return projectDtos;
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/exceptionHandling/GlobalExceptionHandler.java
+++ b/src/main/java/de/szut/lf8_starter/exceptionHandling/GlobalExceptionHandler.java
@ -6,7 +6,6 @@ import io.swagger.v3.oas.annotations.responses.ApiResponses;
 import jakarta.validation.ConstraintViolationException;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
-import org.springframework.http.converter.HttpMessageNotReadableException;
 import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
@ -22,7 +21,7 @@ import java.util.Date;
 public class GlobalExceptionHandler {

    @ExceptionHandler(ResourceNotFoundException.class)
-    public ResponseEntity<ErrorDetails> handleHelloEntityNotFoundException(ResourceNotFoundException ex, WebRequest request) {
+    public ResponseEntity<?> handleHelloEntityNotFoundException(ResourceNotFoundException ex, WebRequest request) {
        ErrorDetails errorDetails = new ErrorDetails(new Date(), ex.getMessage(), request.getDescription(false));
        return new ResponseEntity<>(errorDetails, HttpStatus.NOT_FOUND);
    }
@ -41,13 +40,6 @@ public class GlobalExceptionHandler {
        return new ResponseEntity<>(errorDetails, HttpStatus.BAD_REQUEST);
    }

-    @ExceptionHandler(HttpMessageNotReadableException.class)
-    public ResponseEntity<ErrorDetails> handleHttpMessageNotReadableException(HttpMessageNotReadableException ex, WebRequest request) {
-        ErrorDetails errorDetails = new ErrorDetails(new Date(), ex.getMessage(), request.getDescription(false));
-
-        return new ResponseEntity<>(errorDetails, HttpStatus.BAD_REQUEST);
-    }
-
    @ExceptionHandler(ConstraintViolationException.class)
    public ResponseEntity<ErrorDetails> handleConstraintViolationException(ConstraintViolationException ex, WebRequest request) {
        String errorMessage = ex.getConstraintViolations().stream().findFirst().get().getMessage();
--- a/src/main/java/de/szut/lf8_starter/hello/HelloController.java
+++ b/src/main/java/de/szut/lf8_starter/hello/HelloController.java
@ -14,6 +14,9 @@ import org.springframework.http.HttpStatus;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.*;

+import java.util.List;
+import java.util.stream.Collectors;
+
@RestController
@RequestMapping(value = "hello")
@PreAuthorize("hasAnyAuthority('user')")
@ -42,6 +45,22 @@ public class HelloController {
        return this.helloMapper.mapToGetDto(helloEntity);
    }

+    @Operation(summary = "delivers a list of hellos")
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "200", description = "list of hellos",
+                    content = {@Content(mediaType = "application/json",
+                            schema = @Schema(implementation = HelloGetDto.class))}),
+            @ApiResponse(responseCode = "401", description = "not authorized",
+                    content = @Content)})
+    @GetMapping
+    public List<HelloGetDto> findAll() {
+        return this.service
+                .readAll()
+                .stream()
+                .map(e -> this.helloMapper.mapToGetDto(e))
+                .collect(Collectors.toList());
+    }
+
    @Operation(summary = "deletes a Hello by id")
    @ApiResponses(value = {
            @ApiResponse(responseCode = "204", description = "delete successful"),
@ -59,4 +78,22 @@ public class HelloController {
            this.service.delete(entity);
        }
    }
+
+    @Operation(summary = "find hellos by message")
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "200", description = "List of hellos who have the given message",
+                    content = {@Content(mediaType = "application/json",
+                            schema = @Schema(implementation = HelloGetDto.class))}),
+            @ApiResponse(responseCode = "404", description = "qualification description does not exist",
+                    content = @Content),
+            @ApiResponse(responseCode = "401", description = "not authorized",
+                    content = @Content)})
+    @GetMapping("/findByMessage")
+    public List<HelloGetDto> findAllEmployeesByQualification(@RequestParam String message) {
+        return this.service
+                .findByMessage(message)
+                .stream()
+                .map(e -> this.helloMapper.mapToGetDto(e))
+                .collect(Collectors.toList());
+    }
 }
--- a/src/main/java/de/szut/lf8_starter/project/CreateProjectAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/CreateProjectAction.java
@ -0,0 +1,39 @@
+package de.szut.lf8_starter.project;
+
+import de.szut.lf8_starter.project.dto.CreateProjectDto;
+import de.szut.lf8_starter.project.dto.GetProjectDto;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import jakarta.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping(value = "/projects")
+public class CreateProjectAction {
+    private final ProjectService projectService;
+    private final ProjectMapper projectMapper;
+
+    public CreateProjectAction(ProjectService projectService, ProjectMapper mappingService) {
+        this.projectService = projectService;
+        this.projectMapper = mappingService;
+    }
+
+    @Operation(summary = "Creates a new Project")
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "201", description = "created project", content = {@Content(mediaType = "application/json", schema = @Schema(implementation = GetProjectDto.class))}),
+            @ApiResponse(responseCode = "400", description = "invalid JSON posted", content = @Content),
+            @ApiResponse(responseCode = "401", description = "not authorized", content = @Content)})
+    @PostMapping
+    @ResponseStatus(code = HttpStatus.CREATED)
+    public GetProjectDto create(@RequestBody @Valid CreateProjectDto createProjectDto) {
+        ProjectEntity projectEntity = this.projectMapper.mapCreateDtoToEntity(createProjectDto);
+
+        projectEntity = this.projectService.create(projectEntity);
+
+        return this.projectMapper.mapToGetDto(projectEntity);
+    }
+}
--- a/src/main/java/de/szut/lf8_starter/project/action/crud/GetAllProjectsAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/crud/GetAllProjectsAction.java
@ -1,36 +1,32 @@
-package de.szut.lf8_starter.project.action.crud;
+package de.szut.lf8_starter.project;

-import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
-import de.szut.lf8_starter.project.mapper.ProjectMapper;
+import de.szut.lf8_starter.project.dto.GetProjectDto;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;

 import java.util.List;

@RestController
@RequestMapping(value = "projects")
-public class GetAllProjectsAction {
+public class ProjectController {
    private final ProjectService service;
    private final ProjectMapper projectMapper;
-
-    public GetAllProjectsAction(ProjectService service, ProjectMapper projectMapper) {
+    public ProjectController(ProjectService service, ProjectMapper projectMapper) {
        this.service = service;
        this.projectMapper = projectMapper;
    }

    @Operation(summary = "returns all projects")
    @ApiResponses(value = {
-            @ApiResponse(responseCode = "200", description = "all projects", content = {
-                    @Content(mediaType = "application/json", schema = @Schema(implementation = GetProjectDto.class))
-            }),
-            @ApiResponse(responseCode = "401", description = "not authorized", content = @Content)})
+            @ApiResponse(responseCode = "200", description = "all projects",
+                    content = {@Content(mediaType = "application/json",
+                            schema = @Schema(implementation = GetProjectDto.class))}),
+            @ApiResponse(responseCode = "401", description = "not authorized",
+                    content = @Content)})
    @GetMapping
    public List<GetProjectDto> findAll() {
        return this.service
--- a/src/main/java/de/szut/lf8_starter/project/ProjectEntity.java
+++ b/src/main/java/de/szut/lf8_starter/project/ProjectEntity.java
@ -25,7 +25,7 @@ public class ProjectEntity {

    private long leadingEmployee;

-    @ElementCollection(fetch = FetchType.EAGER)
+    @ElementCollection
    private List<Long> employees;

    private long contractor;
--- a/src/main/java/de/szut/lf8_starter/project/ProjectMapper.java
+++ b/src/main/java/de/szut/lf8_starter/project/ProjectMapper.java
@ -0,0 +1,41 @@
+package de.szut.lf8_starter.project;
+
+import de.szut.lf8_starter.project.dto.CreateProjectDto;
+import de.szut.lf8_starter.project.dto.GetProjectDto;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ProjectMapper {
+    public ProjectEntity mapCreateDtoToEntity(CreateProjectDto createProjectDto) {
+        ProjectEntity projectEntity = new ProjectEntity();
+
+        projectEntity.setName(createProjectDto.getName());
+        projectEntity.setComment(createProjectDto.getComment());
+        projectEntity.setLeadingEmployee(createProjectDto.getLeadingEmployee());
+        projectEntity.setEmployees(createProjectDto.getEmployees());
+        projectEntity.setContractor(createProjectDto.getContractor());
+        projectEntity.setContractorName(createProjectDto.getContractorName());
+        projectEntity.setStartDate(createProjectDto.getStartDate());
+        projectEntity.setPlannedEndDate(createProjectDto.getPlannedEndDate());
+        projectEntity.setEndDate(createProjectDto.getEndDate());
+
+        return projectEntity;
+    }
+
+    public GetProjectDto mapToGetDto(ProjectEntity projectEntity) {
+        GetProjectDto getProjectDto = new GetProjectDto();
+
+        getProjectDto.setId(projectEntity.getId());
+        getProjectDto.setName(projectEntity.getName());
+        getProjectDto.setComment(projectEntity.getComment());
+        getProjectDto.setLeadingEmployee(projectEntity.getLeadingEmployee());
+        getProjectDto.setEmployees(projectEntity.getEmployees());
+        getProjectDto.setContractor(projectEntity.getContractor());
+        getProjectDto.setContractorName(projectEntity.getContractorName());
+        getProjectDto.setStartDate(projectEntity.getStartDate());
+        getProjectDto.setPlannedEndDate(projectEntity.getPlannedEndDate());
+        getProjectDto.setEndDate(projectEntity.getEndDate());
+
+        return getProjectDto;
+    }
+}
--- a/src/main/java/de/szut/lf8_starter/project/ProjectRepository.java
+++ b/src/main/java/de/szut/lf8_starter/project/ProjectRepository.java
@ -1,14 +1,8 @@
 package de.szut.lf8_starter.project;

 import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;

-import java.util.ArrayList;
-
@Repository
 public interface ProjectRepository extends JpaRepository<ProjectEntity, Long> {
-    @Query("SELECT p FROM ProjectEntity p WHERE :employeeId MEMBER OF p.employees")
-    ArrayList<ProjectEntity> findAllByEmployeeId(@Param("employeeId") Long employeeId);
 }
--- a/src/main/java/de/szut/lf8_starter/project/ProjectService.java
+++ b/src/main/java/de/szut/lf8_starter/project/ProjectService.java
@ -1,10 +1,8 @@
 package de.szut.lf8_starter.project;

-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
 import org.springframework.stereotype.Service;

 import java.util.List;
-import java.util.Optional;

@Service
 public class ProjectService {
@ -21,30 +19,4 @@ public class ProjectService {
    public List<ProjectEntity> readAll() {
        return this.projectRepository.findAll();
    }
-
-    public Optional<ProjectEntity> findById(Long id) {
-        return projectRepository.findById(id);
-    }
-
-    public void update(ProjectEntity project) {
-        this.projectRepository.save(project);
-    }
-
-    public void delete(Long id) {
-        this.projectRepository.deleteById(id);
-    }
-
-    public boolean isOverlapping(GetProjectDto getProjectDto, ProjectEntity existingProjectEntity) {
-        return isDateRangeOverlapping(getProjectDto, existingProjectEntity) || isDateEqual(getProjectDto, existingProjectEntity);
-    }
-
-    private boolean isDateRangeOverlapping(GetProjectDto getProjectDto, ProjectEntity existingProjectEntity) {
-        return getProjectDto.getStartDate().isBefore(existingProjectEntity.getPlannedEndDate())
-                && getProjectDto.getPlannedEndDate().isAfter(existingProjectEntity.getStartDate());
-    }
-
-    private boolean isDateEqual(GetProjectDto getProjectDto, ProjectEntity existingProjectEntity) {
-        return getProjectDto.getStartDate().isEqual(existingProjectEntity.getStartDate())
-                || getProjectDto.getPlannedEndDate().isEqual(existingProjectEntity.getPlannedEndDate());
-    }
 }
--- a/src/main/java/de/szut/lf8_starter/project/action/crud/CreateProjectAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/crud/CreateProjectAction.java
@ -1,63 +0,0 @@
-package de.szut.lf8_starter.project.action.crud;
-
-import de.szut.lf8_starter.employee.EmployeeService;
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.project.CreateProjectDto;
-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
-import de.szut.lf8_starter.project.mapper.ProjectMapper;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.media.Schema;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import jakarta.validation.Valid;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-@RestController
-@RequestMapping(value = "/projects")
-public class CreateProjectAction {
-    private final EmployeeService employeeService;
-    private final ProjectService projectService;
-    private final ProjectMapper projectMapper;
-
-    public CreateProjectAction(EmployeeService employeeService, ProjectService projectService, ProjectMapper mappingService) {
-        this.employeeService = employeeService;
-        this.projectService = projectService;
-        this.projectMapper = mappingService;
-    }
-
-    @Operation(summary = "Creates a new Project")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "201", description = "created project", content = {@Content(mediaType = "application/json", schema = @Schema(implementation = GetProjectDto.class))}),
-            @ApiResponse(responseCode = "400", description = "invalid JSON posted", content = @Content),
-            @ApiResponse(responseCode = "401", description = "not authorized", content = @Content),
-            @ApiResponse(responseCode = "409", description = "Project dates conflict", content = @Content)
-    })
-    @PostMapping
-    @ResponseStatus(code = HttpStatus.CREATED)
-    public ResponseEntity<Object> create(
-            @RequestBody @Valid CreateProjectDto createProjectDto,
-            @RequestHeader("Authorization") String accessToken
-    ) {
-        ProjectEntity project = this.projectMapper.mapCreateDtoToEntity(createProjectDto);
-
-        for (Long employeeId : createProjectDto.getEmployees()) {
-            if (!this.employeeService.employeeExists(accessToken, employeeId)) {
-                return new ResponseEntity<>("Employee with ID: " + employeeId + " not found", HttpStatus.NOT_FOUND);
-            }
-
-            for (GetProjectDto getProjectDto : this.employeeService.getProjects(employeeId)) {
-                if (projectService.isOverlapping(getProjectDto, project)) {
-                    return new ResponseEntity<>("Project dates conflict with an existing project for Employee with ID: " + employeeId, HttpStatus.CONFLICT);
-                }
-            }
-        }
-
-        this.projectService.create(project);
-
-        return new ResponseEntity<>(this.projectMapper.mapToGetDto(project), HttpStatus.CREATED);
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/action/crud/GetProjectAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/crud/GetProjectAction.java
@ -1,49 +0,0 @@
-package de.szut.lf8_starter.project.action.crud;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
-import de.szut.lf8_starter.project.mapper.ProjectMapper;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.media.Schema;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.util.Optional;
-
-@RestController
-@RequestMapping(value = "projects")
-public class GetProjectAction {
-    private final ProjectService projectService;
-    private final ProjectMapper projectMapper;
-
-    public GetProjectAction(ProjectService projectService, ProjectMapper projectMapper) {
-        this.projectService = projectService;
-        this.projectMapper = projectMapper;
-    }
-
-    @Operation(summary = "Find project by ID")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "200", description = "Project found", content = {
-                    @Content(mediaType = "application/json", schema = @Schema(implementation = GetProjectDto.class))
-            }),
-            @ApiResponse(responseCode = "404", description = "Project not found", content = @Content)
-    })
-    @GetMapping("/{id}")
-    public ResponseEntity<GetProjectDto> findArticleById(@PathVariable Long id) {
-        Optional<ProjectEntity> project = this.projectService.findById(id);
-
-        if (project.isEmpty()) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        return new ResponseEntity<>(this.projectMapper.mapToGetDto(project.get()), HttpStatus.OK);
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/action/crud/RemoveProjectAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/crud/RemoveProjectAction.java
@ -1,43 +0,0 @@
-package de.szut.lf8_starter.project.action.crud;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.DeleteMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.util.Optional;
-
-@RestController
-@RequestMapping(value = "projects")
-public class RemoveProjectAction {
-    private final ProjectService projectService;
-
-    public RemoveProjectAction(ProjectService projectService) {
-        this.projectService = projectService;
-    }
-
-    @Operation(summary = "Remove project by ID")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "204", description = "Project deleted", content = {}),
-            @ApiResponse(responseCode = "404", description = "Project not found", content = @Content)
-    })
-    @DeleteMapping("/{id}")
-    public ResponseEntity<GetProjectDto> findArticleById(@PathVariable Long id) {
-        Optional<ProjectEntity> project = this.projectService.findById(id);
-        if (project.isEmpty()) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        this.projectService.delete(id);
-        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/action/crud/UpdateProjectAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/crud/UpdateProjectAction.java
@ -1,50 +0,0 @@
-package de.szut.lf8_starter.project.action.crud;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
-import de.szut.lf8_starter.project.dto.project.UpdateProjectDto;
-import de.szut.lf8_starter.project.mapper.ProjectMapper;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.media.Schema;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import jakarta.validation.Valid;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-import java.util.Optional;
-
-@RestController
-@RequestMapping(value = "/projects")
-public class UpdateProjectAction {
-    private final ProjectService projectService;
-    private final ProjectMapper projectMapper;
-
-    public UpdateProjectAction(ProjectService projectService, ProjectMapper mappingService) {
-        this.projectService = projectService;
-        this.projectMapper = mappingService;
-    }
-
-    @Operation(summary = "Update a project by ID")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "200", description = "Project updated successfully",
-                    content = @Content(mediaType = "application/json", schema = @Schema(implementation = GetProjectDto.class))),
-            @ApiResponse(responseCode = "404", description = "Project not found", content = @Content)
-    })
-    @PutMapping("/{id}")
-    public ResponseEntity<GetProjectDto> updateSupplier(@PathVariable Long id, @Valid @RequestBody UpdateProjectDto updateProjectDto) {
-        Optional<ProjectEntity> project = this.projectService.findById(id);
-
-        if (project.isEmpty()) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        ProjectEntity updatedProject = this.projectMapper.mapUpdateDtoToEntity(updateProjectDto, project.get());
-        this.projectService.update(updatedProject);
-
-        return new ResponseEntity<>(this.projectMapper.mapToGetDto(updatedProject), HttpStatus.OK);
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/action/employee/AddEmployeeToProjectAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/employee/AddEmployeeToProjectAction.java
@ -1,65 +0,0 @@
-package de.szut.lf8_starter.project.action.employee;
-
-import de.szut.lf8_starter.employee.EmployeeService;
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestHeader;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.util.Optional;
-
-@RestController
-public class AddEmployeeToProjectAction {
-    private final ProjectService projectService;
-    private final EmployeeService employeeService;
-
-    public AddEmployeeToProjectAction(ProjectService projectService, EmployeeService employeeService) {
-        this.projectService = projectService;
-        this.employeeService = employeeService;
-    }
-
-    @Operation(summary = "Add an employee to a project")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "204", description = "Employee added to project"),
-            @ApiResponse(responseCode = "404", description = "Project or employee not found", content = @Content),
-            @ApiResponse(responseCode = "409", description = "Project dates conflict", content = @Content)
-    })
-    @PostMapping("/projects/{projectId}/employees/{employeeId}")
-    public ResponseEntity<Object> create(
-            @PathVariable Long projectId,
-            @PathVariable Long employeeId,
-            @RequestHeader("Authorization") String accessToken
-    ) {
-        Optional<ProjectEntity> optionalProject = this.projectService.findById(projectId);
-
-        if (optionalProject.isEmpty()) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        ProjectEntity projectEntity = optionalProject.get();
-
-        if (!this.employeeService.employeeExists(accessToken, employeeId)) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        for (GetProjectDto getProjectDto : this.employeeService.getProjects(employeeId)) {
-            if (this.projectService.isOverlapping(getProjectDto, projectEntity)) {
-                return new ResponseEntity<>("Project dates conflict with an existing project for Employee with ID: " + employeeId, HttpStatus.CONFLICT);
-            }
-        }
-
-        projectEntity.getEmployees().add(employeeId);
-        this.projectService.update(projectEntity);
-
-        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/action/employee/GetEmployeeFromProjectAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/employee/GetEmployeeFromProjectAction.java
@ -1,51 +0,0 @@
-package de.szut.lf8_starter.project.action.employee;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.employee.GetEmployeesFromProjectDto;
-import de.szut.lf8_starter.project.mapper.EmployeeFromProjectMapper;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestHeader;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.util.Optional;
-
-@RestController
-public class GetEmployeeFromProjectAction {
-    private final ProjectService projectService;
-    private final EmployeeFromProjectMapper employeeFromProjectMapper;
-
-    public GetEmployeeFromProjectAction(ProjectService projectService, EmployeeFromProjectMapper employeeFromProjectMapper) {
-        this.projectService = projectService;
-        this.employeeFromProjectMapper = employeeFromProjectMapper;
-    }
-
-    @Operation(summary = "Get all employees from project")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "200", description = "Outputs projects with employees"),
-            @ApiResponse(responseCode = "404", description = "Project not found", content = @Content)
-    })
-    @GetMapping("/projects/{projectId}/employees")
-    public ResponseEntity<Object> create(
-            @PathVariable Long projectId,
-            @RequestHeader("Authorization") String accessToken
-    ) {
-        Optional<ProjectEntity> project = projectService.findById(projectId);
-
-        if (project.isEmpty()) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        GetEmployeesFromProjectDto getEmployeesFromProjectDto = this.employeeFromProjectMapper
-                .mapToGetEmployeesFromProjectDto(project.get(), accessToken);
-
-        return new ResponseEntity<>(getEmployeesFromProjectDto, HttpStatus.OK);
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/action/employee/GetProjectsFromEmployee.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/employee/GetProjectsFromEmployee.java
@ -1,39 +0,0 @@
-package de.szut.lf8_starter.project.action.employee;
-
-import de.szut.lf8_starter.employee.EmployeeService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestHeader;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-public class GetProjectsFromEmployee {
-    private final EmployeeService employeeService;
-
-    public GetProjectsFromEmployee(EmployeeService employeeService) {
-        this.employeeService = employeeService;
-    }
-
-    @Operation(summary = "Get all projects from employee")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "200", description = "Get all projects from employee", content = @Content),
-            @ApiResponse(responseCode = "404", description = "Employee not found", content = @Content)
-    })
-    @GetMapping("/employees/{employeeId}/projects")
-    public ResponseEntity<Object> create(
-            @PathVariable Long employeeId,
-            @RequestHeader("Authorization") String accessToken
-    ) {
-        if (!this.employeeService.employeeExists(accessToken, employeeId)) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        return new ResponseEntity<>(this.employeeService.getProjects(employeeId), HttpStatus.OK);
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/action/employee/RemoveEmployeeFromProjectAction.java
+++ b/src/main/java/de/szut/lf8_starter/project/action/employee/RemoveEmployeeFromProjectAction.java
@ -1,52 +0,0 @@
-package de.szut.lf8_starter.project.action.employee;
-
-import de.szut.lf8_starter.employee.EmployeeService;
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-import java.util.Optional;
-
-@RestController
-public class RemoveEmployeeFromProjectAction {
-    private final ProjectService projectService;
-    private final EmployeeService employeeService;
-
-    public RemoveEmployeeFromProjectAction(ProjectService projectService, EmployeeService employeeService) {
-        this.projectService = projectService;
-        this.employeeService = employeeService;
-    }
-
-    @Operation(summary = "Remove an employee from a project")
-    @ApiResponses(value = {
-            @ApiResponse(responseCode = "204", description = "Employee removed from project"),
-            @ApiResponse(responseCode = "404", description = "Project or employee not found", content = @Content)
-    })
-    @DeleteMapping("/projects/{projectId}/employees/{employeeId}")
-    public ResponseEntity<Object> remove(
-            @PathVariable Long projectId,
-            @PathVariable Long employeeId,
-            @RequestHeader("Authorization") String accessToken
-    ) {
-        Optional<ProjectEntity> project = this.projectService.findById(projectId);
-
-        if (project.isEmpty()) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        if (!this.employeeService.employeeExists(accessToken, employeeId)) {
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        project.get().getEmployees().remove(employeeId);
-        this.projectService.update(project.get());
-
-        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/dto/project/CreateProjectDto.java
+++ b/src/main/java/de/szut/lf8_starter/project/dto/project/CreateProjectDto.java
@ -1,4 +1,4 @@
-package de.szut.lf8_starter.project.dto.project;
+package de.szut.lf8_starter.project.dto;

 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
--- a/src/main/java/de/szut/lf8_starter/project/dto/project/GetProjectDto.java
+++ b/src/main/java/de/szut/lf8_starter/project/dto/project/GetProjectDto.java
@ -1,8 +1,10 @@
-package de.szut.lf8_starter.project.dto.project;
+package de.szut.lf8_starter.project.dto;

 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
 import lombok.Getter;
 import lombok.Setter;

--- a/src/main/java/de/szut/lf8_starter/project/dto/employee/EmployeeDto.java
+++ b/src/main/java/de/szut/lf8_starter/project/dto/employee/EmployeeDto.java
@ -1,22 +0,0 @@
-package de.szut.lf8_starter.project.dto.employee;
-
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-import lombok.Getter;
-import lombok.Setter;
-
-import java.util.List;
-
-@Getter
-@Setter
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-public class EmployeeDto {
-    private long id;
-    private String firstName;
-    private String lastName;
-    private String street;
-    private String postcode;
-    private String city;
-    private String phone;
-    private List<String> skillSet;
-}
--- a/src/main/java/de/szut/lf8_starter/project/dto/employee/GetEmployeeDto.java
+++ b/src/main/java/de/szut/lf8_starter/project/dto/employee/GetEmployeeDto.java
@ -1,11 +0,0 @@
-package de.szut.lf8_starter.project.dto.employee;
-
-import lombok.Getter;
-import lombok.Setter;
-
-@Getter
-@Setter
-public class GetEmployeeDto {
-    private long id;
-    private GetSkillDto[] skillSet;
-}
--- a/src/main/java/de/szut/lf8_starter/project/dto/employee/GetEmployeesFromProjectDto.java
+++ b/src/main/java/de/szut/lf8_starter/project/dto/employee/GetEmployeesFromProjectDto.java
@ -1,17 +0,0 @@
-package de.szut.lf8_starter.project.dto.employee;
-
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-import lombok.Getter;
-import lombok.Setter;
-
-import java.util.ArrayList;
-
-@Getter
-@Setter
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-public class GetEmployeesFromProjectDto {
-    private long projectId;
-    private String projectDescription;
-    private ArrayList<GetEmployeeDto> employees;
-}
--- a/src/main/java/de/szut/lf8_starter/project/dto/employee/GetSkillDto.java
+++ b/src/main/java/de/szut/lf8_starter/project/dto/employee/GetSkillDto.java
@ -1,13 +0,0 @@
-package de.szut.lf8_starter.project.dto.employee;
-
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-import lombok.Getter;
-import lombok.Setter;
-
-@Getter
-@Setter
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-public class GetSkillDto {
-    private String skill;
-}
--- a/src/main/java/de/szut/lf8_starter/project/dto/project/UpdateProjectDto.java
+++ b/src/main/java/de/szut/lf8_starter/project/dto/project/UpdateProjectDto.java
@ -1,36 +0,0 @@
-package de.szut.lf8_starter.project.dto.project;
-
-import com.fasterxml.jackson.annotation.JsonFormat;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-import lombok.Getter;
-import lombok.Setter;
-
-import java.time.LocalDate;
-import java.util.List;
-
-@Getter
-@Setter
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-public class UpdateProjectDto {
-    private String name;
-
-    private Long leadingEmployee;
-
-    private List<Long> employees;
-
-    private Long contractor;
-
-    private String contractorName;
-
-    private String comment;
-
-    @JsonFormat(pattern = "dd.MM.yyyy")
-    private LocalDate startDate;
-
-    @JsonFormat(pattern = "dd.MM.yyyy")
-    private LocalDate plannedEndDate;
-
-    @JsonFormat(pattern = "dd.MM.yyyy")
-    private LocalDate endDate;
-}
--- a/src/main/java/de/szut/lf8_starter/project/mapper/EmployeeFromProjectMapper.java
+++ b/src/main/java/de/szut/lf8_starter/project/mapper/EmployeeFromProjectMapper.java
@ -1,35 +0,0 @@
-package de.szut.lf8_starter.project.mapper;
-
-import de.szut.lf8_starter.employee.EmployeeService;
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.dto.employee.GetEmployeeDto;
-import de.szut.lf8_starter.project.dto.employee.GetEmployeesFromProjectDto;
-import org.springframework.stereotype.Service;
-
-import java.util.ArrayList;
-
-@Service
-public class EmployeeFromProjectMapper {
-    private final EmployeeService employeeService;
-
-    public EmployeeFromProjectMapper(EmployeeService employeeService) {
-        this.employeeService = employeeService;
-    }
-
-    public GetEmployeesFromProjectDto mapToGetEmployeesFromProjectDto(ProjectEntity projectEntity, String accessToken) {
-        GetEmployeesFromProjectDto getEmployeesFromProjectDto = new GetEmployeesFromProjectDto();
-        getEmployeesFromProjectDto.setProjectId(projectEntity.getId());
-        getEmployeesFromProjectDto.setProjectDescription(projectEntity.getComment());
-
-        ArrayList<GetEmployeeDto> employeeDtos = new ArrayList<>();
-        for (long id : projectEntity.getEmployees()) {
-            GetEmployeeDto getEmployeeDto = this.employeeService.getEmployee(accessToken, id);
-
-            employeeDtos.add(getEmployeeDto);
-        }
-
-        getEmployeesFromProjectDto.setEmployees(employeeDtos);
-
-        return getEmployeesFromProjectDto;
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/project/mapper/ProjectMapper.java
+++ b/src/main/java/de/szut/lf8_starter/project/mapper/ProjectMapper.java
@ -1,62 +0,0 @@
-package de.szut.lf8_starter.project.mapper;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.dto.project.CreateProjectDto;
-import de.szut.lf8_starter.project.dto.project.GetProjectDto;
-import de.szut.lf8_starter.project.dto.project.UpdateProjectDto;
-import org.springframework.stereotype.Service;
-
-@Service
-public class ProjectMapper {
-    public ProjectEntity mapCreateDtoToEntity(CreateProjectDto createProjectDto) {
-        ProjectEntity projectEntity = new ProjectEntity();
-
-        projectEntity.setName(createProjectDto.getName());
-        projectEntity.setComment(createProjectDto.getComment());
-        projectEntity.setLeadingEmployee(createProjectDto.getLeadingEmployee());
-        projectEntity.setEmployees(createProjectDto.getEmployees());
-        projectEntity.setContractor(createProjectDto.getContractor());
-        projectEntity.setContractorName(createProjectDto.getContractorName());
-        projectEntity.setStartDate(createProjectDto.getStartDate());
-        projectEntity.setPlannedEndDate(createProjectDto.getPlannedEndDate());
-        projectEntity.setEndDate(createProjectDto.getEndDate());
-
-        return projectEntity;
-    }
-
-    public GetProjectDto mapToGetDto(ProjectEntity projectEntity) {
-        GetProjectDto getProjectDto = new GetProjectDto();
-
-        getProjectDto.setId(projectEntity.getId());
-        getProjectDto.setName(projectEntity.getName());
-        getProjectDto.setComment(projectEntity.getComment());
-        getProjectDto.setLeadingEmployee(projectEntity.getLeadingEmployee());
-        getProjectDto.setEmployees(projectEntity.getEmployees());
-        getProjectDto.setContractor(projectEntity.getContractor());
-        getProjectDto.setContractorName(projectEntity.getContractorName());
-        getProjectDto.setStartDate(projectEntity.getStartDate());
-        getProjectDto.setPlannedEndDate(projectEntity.getPlannedEndDate());
-        getProjectDto.setEndDate(projectEntity.getEndDate());
-
-        return getProjectDto;
-    }
-
-    public ProjectEntity mapUpdateDtoToEntity(UpdateProjectDto updateProjectDto, ProjectEntity projectEntity) {
-        projectEntity.setName(updateProjectDto.getName() != null ? updateProjectDto.getName() : projectEntity.getName());
-        projectEntity.setLeadingEmployee(updateProjectDto.getLeadingEmployee() != null ? updateProjectDto.getLeadingEmployee() : projectEntity.getLeadingEmployee());
-        projectEntity.setContractor(updateProjectDto.getContractor() != null ? updateProjectDto.getContractor() : projectEntity.getContractor());
-        projectEntity.setContractorName(updateProjectDto.getContractorName() != null ? updateProjectDto.getContractorName() : projectEntity.getContractorName());
-        projectEntity.setComment(updateProjectDto.getComment() != null ? updateProjectDto.getComment() : projectEntity.getComment());
-        projectEntity.setStartDate(updateProjectDto.getStartDate() != null ? updateProjectDto.getStartDate() : projectEntity.getStartDate());
-        projectEntity.setPlannedEndDate(updateProjectDto.getPlannedEndDate() != null ? updateProjectDto.getPlannedEndDate() : projectEntity.getPlannedEndDate());
-        projectEntity.setEndDate(updateProjectDto.getEndDate() != null ? updateProjectDto.getEndDate() : projectEntity.getEndDate());
-
-        if (updateProjectDto.getEmployees() != null) {
-            projectEntity.getEmployees().clear();
-
-            projectEntity.setEmployees(updateProjectDto.getEmployees());
-        }
-
-        return projectEntity;
-    }
-}
--- a/src/main/java/de/szut/lf8_starter/security/KeycloakLogoutHandler.java
+++ b/src/main/java/de/szut/lf8_starter/security/KeycloakLogoutHandler.java
@ -25,10 +25,10 @@ public class KeycloakLogoutHandler implements LogoutHandler {

    @Override
    public void logout(HttpServletRequest request, HttpServletResponse response, Authentication auth) {
-        logout(auth);
+        logout(request, auth);
    }

-    public void logout(Authentication auth) {
+    public void logout(HttpServletRequest request, Authentication auth) {
        logoutFromKeycloak((OidcUser) auth.getPrincipal());
    }

--- a/src/main/java/de/szut/lf8_starter/security/KeycloakSecurityConfig.java
+++ b/src/main/java/de/szut/lf8_starter/security/KeycloakSecurityConfig.java
@ -1,17 +1,24 @@
 package de.szut.lf8_starter.security;

 import java.util.*;
+import java.util.stream.Collectors;

 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+import org.springframework.http.HttpMethod;
 import org.springframework.security.config.Customizer;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.authority.mapping.GrantedAuthoritiesMapper;
 import org.springframework.security.core.session.SessionRegistry;
 import org.springframework.security.core.session.SessionRegistryImpl;
+import org.springframework.security.oauth2.core.oidc.user.OidcUserAuthority;
+import org.springframework.security.oauth2.core.user.OAuth2UserAuthority;
 import org.springframework.security.oauth2.server.resource.authentication.JwtAuthenticationConverter;
+import org.springframework.security.oauth2.server.resource.authentication.JwtGrantedAuthoritiesConverter;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.session.RegisterSessionAuthenticationStrategy;
 import org.springframework.security.web.authentication.session.SessionAuthenticationStrategy;
@ -22,10 +29,14 @@ import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
@EnableWebSecurity
 class KeycloakSecurityConfig {

+    private static final String GROUPS = "groups";
    private static final String REALM_ACCESS_CLAIM = "realm_access";
    private static final String ROLES_CLAIM = "roles";

-    KeycloakSecurityConfig() {
+    private final KeycloakLogoutHandler keycloakLogoutHandler;
+
+    KeycloakSecurityConfig(KeycloakLogoutHandler keycloakLogoutHandler) {
+        this.keycloakLogoutHandler = keycloakLogoutHandler;
    }

    @Bean
@ -72,9 +83,9 @@ class KeycloakSecurityConfig {
        jwtAuthenticationConverter.setJwtGrantedAuthoritiesConverter(jwt -> {
            List<GrantedAuthority> grantedAuthorities = new ArrayList<>();

-            Map<String, Object> realmAccess = jwt.getClaim(REALM_ACCESS_CLAIM);
-            if (realmAccess != null && realmAccess.containsKey(ROLES_CLAIM)) {
-                List<String> roles = (List<String>) realmAccess.get(ROLES_CLAIM);
+            Map<String, Object> realmAccess = jwt.getClaim("realm_access");
+            if (realmAccess != null && realmAccess.containsKey("roles")) {
+                List<String> roles = (List<String>) realmAccess.get("roles");
                for (String role : roles) {
                    grantedAuthorities.add(new SimpleGrantedAuthority("ROLE_" + role));
                }
--- a/src/main/java/de/szut/lf8_starter/welcome/WelcomeController.java
+++ b/src/main/java/de/szut/lf8_starter/welcome/WelcomeController.java
@ -1,12 +1,14 @@
 package de.szut.lf8_starter.welcome;

+
+
 import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.security.core.Authentication;
-import org.springframework.security.core.GrantedAuthority;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RestController;

-import java.util.Collection;
+import java.security.Principal;

@RestController
 public class WelcomeController {
@ -17,8 +19,8 @@ public class WelcomeController {
    }

    @GetMapping("/roles")
-    public ResponseEntity<Collection<GrantedAuthority>> getRoles(Authentication authentication) {
-        return ResponseEntity.ok((Collection<GrantedAuthority>) authentication.getAuthorities());
+    public ResponseEntity<?> getRoles(Authentication authentication) {
+        return ResponseEntity.ok(authentication.getAuthorities());
    }


--- a/src/test/java/de/szut/lf8_starter/Lf8StarterApplicationTests.java
+++ b/src/test/java/de/szut/lf8_starter/Lf8StarterApplicationTests.java
@ -2,6 +2,7 @@ package de.szut.lf8_starter;

 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.TestPropertySource;

@SpringBootTest
 class Lf8StarterApplicationTests {
--- a/src/test/java/de/szut/lf8_starter/integration/project/AddEmployeeToProjectTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/AddEmployeeToProjectTest.java
@ -1,160 +0,0 @@
-package de.szut.lf8_starter.integration.project;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectRepository;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.http.*;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.web.servlet.MockMvc;
-import org.springframework.util.LinkedMultiValueMap;
-import org.springframework.util.MultiValueMap;
-import org.springframework.web.client.RestTemplate;
-
-import java.time.LocalDate;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@SpringBootTest
-@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class AddEmployeeToProjectTest {
-    @Autowired
-    private MockMvc mockMvc;
-
-    @Autowired
-    private RestTemplate restTemplate;
-
-    @Autowired
-    private ProjectRepository projectRepository;
-
-    @Test
-    void addEmployeeToProjectTest() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setComment("comment");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setEndDate(LocalDate.of(2024, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("name");
-        project.setStartDate(LocalDate.of(2021, 1, 1));
-        project.setEmployees(List.of(1L, 2L, 3L));
-        this.projectRepository.save(project);
-
-
-        mockMvc.perform(post("/projects/{projectId}/employees/{employeeId}", 1, 312)
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                        .contentType(MediaType.APPLICATION_JSON))
-                .andExpect(status().isNoContent());
-
-        ProjectEntity updatedProject = projectRepository.findById(1L).get();
-
-        assert updatedProject.getEmployees().contains(312L);
-    }
-
-    @Test
-    void addEmployeeToPastProjectTest() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setComment("past project");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setPlannedEndDate(LocalDate.of(1991, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("past project");
-        project.setStartDate(LocalDate.of(1990, 1, 1));
-        project.setEmployees(List.of(1L, 2L, 3L));
-        this.projectRepository.save(project);
-
-        mockMvc.perform(post("/projects/{projectId}/employees/{employeeId}", project.getId(), 312)
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                        .contentType(MediaType.APPLICATION_JSON))
-                .andExpect(status().isNoContent());
-
-        ProjectEntity updatedProject = projectRepository.findById(project.getId()).get();
-
-        assert updatedProject.getEmployees().contains(312L);
-    }
-
-    @Test
-    void addEmployeeToFutureProjectTest() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setComment("future project");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setPlannedEndDate(LocalDate.of(2101, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("future project");
-        project.setStartDate(LocalDate.of(2100, 1, 1));
-        project.setEmployees(List.of(1L, 2L, 3L));
-        this.projectRepository.save(project);
-
-        mockMvc.perform(post("/projects/{projectId}/employees/{employeeId}", project.getId(), 312)
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                        .contentType(MediaType.APPLICATION_JSON))
-                .andExpect(status().isNoContent());
-
-        ProjectEntity updatedProject = projectRepository.findById(project.getId()).get();
-
-        assert updatedProject.getEmployees().contains(312L);
-    }
-
-    @Test
-    void addEmployeeToProjectWithOverlappingDatesTest() throws Exception {
-        ProjectEntity project1 = new ProjectEntity();
-        project1.setComment("project 1");
-        project1.setContractor(1);
-        project1.setContractorName("contractorName");
-        project1.setPlannedEndDate(LocalDate.of(2023, 1, 1));
-        project1.setLeadingEmployee(1);
-        project1.setName("project 1");
-        project1.setStartDate(LocalDate.of(2022, 1, 1));
-        project1.setEmployees(List.of(1L, 2L, 3L));
-        this.projectRepository.save(project1);
-
-        ProjectEntity project2 = new ProjectEntity();
-        project2.setComment("project 2");
-        project2.setContractor(1);
-        project2.setContractorName("contractorName");
-        project2.setPlannedEndDate(LocalDate.of(2023, 6, 1));
-        project2.setLeadingEmployee(1);
-        project2.setName("project 2");
-        project2.setStartDate(LocalDate.of(2022, 6, 1));
-        project2.setEmployees(List.of(1L, 2L, 3L));
-        this.projectRepository.save(project2);
-
-        mockMvc.perform(post("/projects/{projectId}/employees/{employeeId}", project1.getId(), 312)
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                        .contentType(MediaType.APPLICATION_JSON))
-                .andExpect(status().isNoContent());
-
-        mockMvc.perform(post("/projects/{projectId}/employees/{employeeId}", project2.getId(), 312)
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                        .contentType(MediaType.APPLICATION_JSON))
-                .andExpect(status().isConflict());
-    }
-
-    private String getBearerToken() {
-        String url = "https://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token";
-
-        HttpHeaders headers = new HttpHeaders();
-        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
-
-        MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
-        map.add("grant_type", "password");
-        map.add("client_id", "employee-management-service");
-        map.add("username", "user");
-        map.add("password", "test");
-
-        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(map, headers);
-
-        ResponseEntity<Map> response = this.restTemplate.exchange(url, HttpMethod.POST, request, Map.class);
-
-        return Objects.requireNonNull(response.getBody()).get("access_token").toString();
-    }
-}
--- a/src/test/java/de/szut/lf8_starter/integration/project/CreateProjectActionTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/CreateProjectActionTest.java
@ -1,41 +1,30 @@
 package de.szut.lf8_starter.integration.project;

-import de.szut.lf8_starter.project.ProjectEntity;
 import de.szut.lf8_starter.project.ProjectRepository;
 import org.json.JSONObject;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.http.*;
-import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.http.MediaType;
 import org.springframework.test.web.servlet.MockMvc;
-import org.springframework.util.LinkedMultiValueMap;
-import org.springframework.util.MultiValueMap;
-import org.springframework.web.client.RestTemplate;

 import java.time.LocalDate;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Optional;
+import java.util.Arrays;

 import static org.assertj.core.api.Assertions.assertThat;
-import static org.hamcrest.Matchers.is;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.hamcrest.Matchers.is;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@SpringBootTest
@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class CreateProjectActionTest {
+public class CreateProjectActionTest {
    @Autowired
    private MockMvc mockMvc;
    @Autowired
    private ProjectRepository projectRepository;
-    @Autowired
-    private RestTemplate restTemplate;

    @Test
    void createProjectTest() throws Exception {
@ -43,7 +32,7 @@ class CreateProjectActionTest {
                {
                    "name": "name",
                    "leading_employee": 1,
-                    "employees": [312],
+                    "employees": [2, 3],
                    "contractor": 4,
                    "contractor_name": "Peter File",
                    "comment": "goal of project",
@ -52,16 +41,13 @@ class CreateProjectActionTest {
                  }
                """;

-        final String contentAsString = this.mockMvc.perform(
-                        post("/projects")
-                                .content(content)
-                                .contentType(MediaType.APPLICATION_JSON)
-                                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
+        final var contentAsString = this.mockMvc.perform(
+                post("/projects").content(content).contentType(MediaType.APPLICATION_JSON)
        )
                .andExpect(status().isCreated())
                .andExpect(jsonPath("name", is("name")))
                .andExpect(jsonPath("leading_employee", is(1)))
-                .andExpect(jsonPath("employees", is(List.of(312))))
+                .andExpect(jsonPath("employees", is(Arrays.asList(2, 3))))
                .andExpect(jsonPath("contractor", is(4)))
                .andExpect(jsonPath("contractor_name", is("Peter File")))
                .andExpect(jsonPath("comment", is("goal of project")))
@ -71,9 +57,9 @@ class CreateProjectActionTest {
                .getResponse()
                .getContentAsString();

-        final long id = Long.parseLong(new JSONObject(contentAsString).get("id").toString());
+            final var id = Long.parseLong(new JSONObject(contentAsString).get("id").toString());

-        final Optional<ProjectEntity> project = this.projectRepository.findById(id);
+            final var project = this.projectRepository.findById(id);
            assertThat(project.get().getName()).isEqualTo("name");
            assertThat(project.get().getLeadingEmployee()).isEqualTo(1);
            assertThat(project.get().getContractor()).isEqualTo(4);
@ -82,155 +68,4 @@ class CreateProjectActionTest {
            assertThat(project.get().getStartDate()).isEqualTo(LocalDate.of(2000, 1, 1));
            assertThat(project.get().getPlannedEndDate()).isEqualTo(LocalDate.of(2001, 1, 1));
    }
-
-    @Test
-    void createProjectShouldReturnConflictResponseOnConflictingProjects() throws Exception {
-        String content = """
-                {
-                    "name": "name",
-                    "leading_employee": 1,
-                    "employees": [312],
-                    "contractor": 4,
-                    "contractor_name": "Peter File",
-                    "comment": "goal of project",
-                    "start_date": "01.01.2000",
-                    "planned_end_date": "01.01.2001"
 }
-                """;
-
-        this.mockMvc.perform(
-                        post("/projects")
-                                .content(content)
-                                .contentType(MediaType.APPLICATION_JSON)
-                                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                )
-                .andExpect(status().isCreated());
-
-        this.mockMvc.perform(
-                        post("/projects")
-                                .content(content)
-                                .contentType(MediaType.APPLICATION_JSON)
-                                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                )
-                .andExpect(status().isConflict());
-    }
-
-    @Test
-    void createProjectWithPastStartDate() throws Exception {
-        String content = """
-                {
-                    "name": "past project",
-                    "leading_employee": 1,
-                    "employees": [312],
-                    "contractor": 4,
-                    "contractor_name": "Past Contractor",
-                    "comment": "past project",
-                    "start_date": "01.01.1990",
-                    "planned_end_date": "01.01.1991"
-                  }
-                """;
-
-        this.mockMvc.perform(
-                        post("/projects")
-                                .content(content)
-                                .contentType(MediaType.APPLICATION_JSON)
-                                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                )
-                .andExpect(status().isCreated())
-                .andExpect(jsonPath("name", is("past project")))
-                .andExpect(jsonPath("start_date", is("01.01.1990")))
-                .andExpect(jsonPath("planned_end_date", is("01.01.1991")));
-    }
-
-    @Test
-    void createProjectWithFutureStartDate() throws Exception {
-        String content = """
-                {
-                    "name": "future project",
-                    "leading_employee": 1,
-                    "employees": [312],
-                    "contractor": 4,
-                    "contractor_name": "Future Contractor",
-                    "comment": "future project",
-                    "start_date": "01.01.2100",
-                    "planned_end_date": "01.01.2101"
-                  }
-                """;
-
-        this.mockMvc.perform(
-                        post("/projects")
-                                .content(content)
-                                .contentType(MediaType.APPLICATION_JSON)
-                                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                )
-                .andExpect(status().isCreated())
-                .andExpect(jsonPath("name", is("future project")))
-                .andExpect(jsonPath("start_date", is("01.01.2100")))
-                .andExpect(jsonPath("planned_end_date", is("01.01.2101")));
-    }
-
-    @Test
-    void createProjectWithOverlappingDates() throws Exception {
-        String content1 = """
-                {
-                    "name": "project 1",
-                    "leading_employee": 1,
-                    "employees": [312],
-                    "contractor": 4,
-                    "contractor_name": "Contractor 1",
-                    "comment": "project 1",
-                    "start_date": "01.01.2022",
-                    "planned_end_date": "01.01.2023"
-                  }
-                """;
-
-        String content2 = """
-                {
-                    "name": "project 2",
-                    "leading_employee": 1,
-                    "employees": [312],
-                    "contractor": 4,
-                    "contractor_name": "Contractor 2",
-                    "comment": "project 2",
-                    "start_date": "01.06.2022",
-                    "planned_end_date": "01.06.2023"
-                  }
-                """;
-
-        this.mockMvc.perform(
-                        post("/projects")
-                                .content(content1)
-                                .contentType(MediaType.APPLICATION_JSON)
-                                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                )
-                .andExpect(status().isCreated());
-
-        this.mockMvc.perform(
-                        post("/projects")
-                                .content(content2)
-                                .contentType(MediaType.APPLICATION_JSON)
-                                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                )
-                .andExpect(status().isConflict());
-    }
-
-    private String getBearerToken() {
-        String url = "https://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token";
-
-        HttpHeaders headers = new HttpHeaders();
-        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
-
-        MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
-        map.add("grant_type", "password");
-        map.add("client_id", "employee-management-service");
-        map.add("username", "user");
-        map.add("password", "test");
-
-        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(map, headers);
-
-        ResponseEntity<Map> response = this.restTemplate.exchange(url, HttpMethod.POST, request, Map.class);
-
-        return Objects.requireNonNull(response.getBody()).get("access_token").toString();
-    }
-}
-
--- a/src/test/java/de/szut/lf8_starter/integration/project/GetEmployeesFromProjectTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/GetEmployeesFromProjectTest.java
@ -1,84 +0,0 @@
-package de.szut.lf8_starter.integration.project;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectRepository;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.http.*;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.web.servlet.MockMvc;
-import org.springframework.util.LinkedMultiValueMap;
-import org.springframework.util.MultiValueMap;
-import org.springframework.web.client.RestTemplate;
-
-import java.time.LocalDate;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@SpringBootTest
-@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class GetEmployeesFromProjectTest {
-    @Autowired
-    private MockMvc mockMvc;
-    @Autowired
-    private ProjectRepository projectRepository;
-    @Autowired
-    private RestTemplate restTemplate;
-
-    @Test
-    void getEmployeesFromProjectTest() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setId(1);
-        project.setComment("comment");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setEndDate(LocalDate.of(2024, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("name");
-        project.setStartDate(LocalDate.of(2021, 1, 1));
-        project.setEmployees(List.of(315L));
-        this.projectRepository.save(project);
-
-        this.mockMvc.perform(get("/projects/1/employees")
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                ).andExpect(status().isOk())
-                .andExpect(jsonPath("project_id").value(1))
-                .andExpect(jsonPath("project_description").value("comment"))
-                .andExpect(jsonPath("employees[0].id").value(315))
-                .andExpect(jsonPath("employees[0].skillSet[0].skill").value("Product Owner"));
-    }
-
-    @Test
-    void getEmployeesFromProjectShouldReturnNotFoundResponseWhenProjectIsNotFound() throws Exception {
-        this.mockMvc.perform(get("/projects/1111/employees")
-                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-        ).andExpect(status().isNotFound());
-    }
-
-    private String getBearerToken() {
-        String url = "https://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token";
-
-        HttpHeaders headers = new HttpHeaders();
-        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
-
-        MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
-        map.add("grant_type", "password");
-        map.add("client_id", "employee-management-service");
-        map.add("username", "user");
-        map.add("password", "test");
-
-        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(map, headers);
-
-        ResponseEntity<Map> response = this.restTemplate.exchange(url, HttpMethod.POST, request, Map.class);
-
-        return Objects.requireNonNull(response.getBody()).get("access_token").toString();
-    }
-}
--- a/src/test/java/de/szut/lf8_starter/integration/project/GetProjectActionTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/GetProjectActionTest.java
@ -1,61 +0,0 @@
-package de.szut.lf8_starter.integration.project;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectRepository;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.web.servlet.MockMvc;
-
-import java.time.LocalDate;
-import java.util.List;
-
-import static org.hamcrest.collection.IsCollectionWithSize.hasSize;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@SpringBootTest
-@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class GetProjectActionTest {
-    @Autowired
-    private MockMvc mockMvc;
-    @Autowired
-    private ProjectRepository projectRepository;
-
-    @Test
-    void getProjectTest() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setId(1);
-        project.setComment("comment");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setEndDate(LocalDate.of(2024, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("name");
-        project.setStartDate(LocalDate.of(2021, 1, 1));
-        project.setEmployees(List.of(1L, 2L, 3L));
-        this.projectRepository.save(project);
-
-        this.mockMvc.perform(get("/projects/1"))
-                .andExpect(status().isOk())
-                .andExpect(jsonPath("id").value(1))
-                .andExpect(jsonPath("comment").value("comment"))
-                .andExpect(jsonPath("contractor").value(1))
-                .andExpect(jsonPath("contractor_name").value("contractorName"))
-                .andExpect(jsonPath("end_date").value("01.01.2024"))
-                .andExpect(jsonPath("leading_employee").value(1))
-                .andExpect(jsonPath("name").value("name"))
-                .andExpect(jsonPath("start_date").value("01.01.2021"))
-                .andExpect(jsonPath("employees").isArray())
-                .andExpect(jsonPath("employees", hasSize(3)));
-    }
-
-    @Test
-    void getProjectShouldReturnNotFoundResponseWhenProjectIsNotFound() throws Exception {
-        this.mockMvc.perform(get("/projects/1111")).andExpect(status().isNotFound());
-    }
-}
--- a/src/test/java/de/szut/lf8_starter/integration/project/GetProjectsFromEmployeeTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/GetProjectsFromEmployeeTest.java
@ -1,88 +0,0 @@
-package de.szut.lf8_starter.integration.project;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectRepository;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.http.*;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.web.servlet.MockMvc;
-import org.springframework.util.LinkedMultiValueMap;
-import org.springframework.util.MultiValueMap;
-import org.springframework.web.client.RestTemplate;
-
-import java.time.LocalDate;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@SpringBootTest
-@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class GetProjectsFromEmployeeTest {
-    @Autowired
-    private MockMvc mockMvc;
-    @Autowired
-    private ProjectRepository projectRepository;
-    @Autowired
-    private RestTemplate restTemplate;
-
-    @Test
-    void getProjectsFromEmployeeTest() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setId(1);
-        project.setComment("comment");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setEndDate(LocalDate.of(2024, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("name");
-        project.setStartDate(LocalDate.of(2021, 1, 1));
-        project.setEmployees(List.of(315L));
-        this.projectRepository.save(project);
-
-        this.mockMvc.perform(get("/employees/315/projects")
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                ).andExpect(status().isOk())
-                .andExpect(jsonPath("$[0].id").value(1))
-                .andExpect(jsonPath("$[0].name").value("name"))
-                .andExpect(jsonPath("$[0].leading_employee").value(1))
-                .andExpect(jsonPath("$[0].employees[0]").value(315))
-                .andExpect(jsonPath("$[0].contractor").value(1))
-                .andExpect(jsonPath("$[0].contractor_name").value("contractorName"))
-                .andExpect(jsonPath("$[0].comment").value("comment"))
-                .andExpect(jsonPath("$[0].start_date").value("01.01.2021"));
-    }
-
-    @Test
-    void GetProjectsFromEmployeeShouldReturnNotFoundResponseWhenEmployeeIsNotFound() throws Exception {
-        this.mockMvc.perform(get("/employees/1111/projects")
-                .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-        ).andExpect(status().isNotFound());
-    }
-
-    private String getBearerToken() {
-        String url = "https://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token";
-
-        HttpHeaders headers = new HttpHeaders();
-        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
-
-        MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
-        map.add("grant_type", "password");
-        map.add("client_id", "employee-management-service");
-        map.add("username", "user");
-        map.add("password", "test");
-
-        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(map, headers);
-
-        ResponseEntity<Map> response = this.restTemplate.exchange(url, HttpMethod.POST, request, Map.class);
-
-        return Objects.requireNonNull(response.getBody()).get("access_token").toString();
-    }
-}
--- a/src/test/java/de/szut/lf8_starter/integration/project/ProjectFindAllNotAuthenticated.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/ProjectFindAllNotAuthenticated.java
@ -0,0 +1,37 @@
+package de.szut.lf8_starter.integration.project;
+
+import de.szut.lf8_starter.project.ProjectEntity;
+import de.szut.lf8_starter.project.ProjectRepository;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.test.web.servlet.MockMvc;
+
+import java.time.LocalDate;
+import java.util.List;
+
+import static org.hamcrest.collection.IsCollectionWithSize.hasSize;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@AutoConfigureMockMvc(addFilters = true)
+public class ProjectFindAllNotAuthenticated {
+    @Autowired
+    private ProjectRepository projectRepository;
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Autowired
+    private TestRestTemplate restTemplate;
+
+    @Test
+    void findAllProjects() throws Exception {
+        this.mockMvc.perform(get("/projects"))
+                .andExpect(status().isUnauthorized());
+    }
+}
--- a/src/test/java/de/szut/lf8_starter/integration/project/ProjectFindAllSuccessTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/ProjectFindAllSuccessTest.java
@ -6,7 +6,6 @@ import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.web.servlet.MockMvc;

 import java.time.LocalDate;
@ -19,8 +18,7 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class ProjectFindAllSuccessTest {
+public class ProjectFindAllSuccessTest {
    @Autowired
    private ProjectRepository projectRepository;

@ -29,7 +27,7 @@ class ProjectFindAllSuccessTest {

    @Test
    void findAllProjectsTest() throws Exception {
-        ProjectEntity project = new ProjectEntity();
+        var project = new ProjectEntity();
        project.setId(1);
        project.setComment("comment");
        project.setContractor(1);
--- a/src/test/java/de/szut/lf8_starter/integration/project/RemoveEmployeeFromProjectIntegrationTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/RemoveEmployeeFromProjectIntegrationTest.java
@ -1,87 +0,0 @@
-package de.szut.lf8_starter.integration.project;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectRepository;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.http.*;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.web.servlet.MockMvc;
-import org.springframework.util.LinkedMultiValueMap;
-import org.springframework.util.MultiValueMap;
-import org.springframework.web.client.RestTemplate;
-
-import java.time.LocalDate;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@SpringBootTest
-@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class RemoveEmployeeFromProjectIntegrationTest {
-    @Autowired
-    private MockMvc mockMvc;
-
-    @Autowired
-    private RestTemplate restTemplate;
-
-    @Autowired
-    private ProjectRepository projectRepository;
-
-    @Test
-    void removeEmployeeFromProject() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setComment("comment");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setEndDate(LocalDate.of(2024, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("name");
-        project.setStartDate(LocalDate.of(2021, 1, 1));
-        project.setEmployees(List.of(1L, 2L, 3L, 312L));
-        this.projectRepository.save(project);
-
-
-        mockMvc.perform(delete("/projects/{projectId}/employees/{employeeId}", 1, 312)
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                        .contentType(MediaType.APPLICATION_JSON))
-                .andExpect(status().isNoContent());
-
-        ProjectEntity updatedProject = projectRepository.findById(1L).get();
-
-        assert !updatedProject.getEmployees().contains(312L);
-    }
-
-    private String getBearerToken() {
-        String url = "https://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token";
-
-        HttpHeaders headers = new HttpHeaders();
-        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
-
-        MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
-        map.add("grant_type", "password");
-        map.add("client_id", "employee-management-service");
-        map.add("username", "user");
-        map.add("password", "test");
-
-        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(map, headers);
-
-        ResponseEntity<Map> response = this.restTemplate.exchange(url, HttpMethod.POST, request, Map.class);
-
-        return Objects.requireNonNull(response.getBody()).get("access_token").toString();
-    }
-
-    @Test
-    void removeEmployeeShouldReturn404IfProjectNotFound() throws Exception {
-        mockMvc.perform(delete("/projects/{projectId}/employees/{employeeId}", 1987234987, 312)
-                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
-                        .contentType(MediaType.APPLICATION_JSON))
-                .andExpect(status().isNotFound());
-    }
-}
--- a/src/test/java/de/szut/lf8_starter/integration/project/RemoveProjectActionTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/RemoveProjectActionTest.java
@ -1,49 +0,0 @@
-package de.szut.lf8_starter.integration.project;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectRepository;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.web.servlet.MockMvc;
-
-import java.time.LocalDate;
-import java.util.List;
-
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@SpringBootTest
-@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class RemoveProjectActionTest {
-    @Autowired
-    private MockMvc mockMvc;
-    @Autowired
-    private ProjectRepository projectRepository;
-
-    @Test
-    void deleteProjectTest() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setComment("comment");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setEndDate(LocalDate.of(2024, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("name");
-        project.setStartDate(LocalDate.of(2021, 1, 1));
-        project.setEmployees(List.of(1L, 2L, 3L));
-        this.projectRepository.save(project);
-
-        this.mockMvc.perform(delete("/projects/" + project.getId()))
-                .andExpect(status().isNoContent());
-    }
-
-    @Test
-    void deleteProjectShouldReturnNotFoundResponseWhenProjectIsNotFound() throws Exception {
-        this.mockMvc.perform(get("/projects/2987")).andExpect(status().isNotFound());
-    }
-}
--- a/src/test/java/de/szut/lf8_starter/integration/project/UpdateProjectActionTest.java
+++ b/src/test/java/de/szut/lf8_starter/integration/project/UpdateProjectActionTest.java
@ -1,143 +0,0 @@
-package de.szut.lf8_starter.integration.project;
-
-import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectRepository;
-import org.json.JSONObject;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.http.MediaType;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.web.servlet.MockMvc;
-
-import java.time.LocalDate;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Optional;
-
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.hamcrest.Matchers.is;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.put;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@SpringBootTest
-@AutoConfigureMockMvc(addFilters = false)
-@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
-class UpdateProjectActionTest {
-    @Autowired
-    private MockMvc mockMvc;
-    @Autowired
-    private ProjectRepository projectRepository;
-
-    @Test
-    void updateProjectShouldUpdateProject() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setId(1);
-        project.setComment("comment");
-        project.setContractor(1);
-        project.setContractorName("contractorName");
-        project.setEndDate(LocalDate.of(2024, 1, 1));
-        project.setLeadingEmployee(1);
-        project.setName("name");
-        project.setStartDate(LocalDate.of(2021, 1, 1));
-        project.setEmployees(List.of(1L, 2L, 3L));
-        this.projectRepository.save(project);
-
-        String content = """
-                {
-                    "name": "updatedName",
-                    "leading_employee": 2,
-                    "employees": [3, 4, 5],
-                    "contractor": 6,
-                    "contractor_name": "Updated Contractor name",
-                    "comment": "new goal of project",
-                    "start_date": "01.01.2021",
-                    "planned_end_date": "01.01.2022"
-                  }
-                """;
-
-        final String contentAsString = this.mockMvc.perform(
-                        put("/projects/1").content(content).contentType(MediaType.APPLICATION_JSON)
-                )
-                .andExpect(status().isOk())
-                .andExpect(jsonPath("name", is("updatedName")))
-                .andExpect(jsonPath("leading_employee", is(2)))
-                .andExpect(jsonPath("employees", is(Arrays.asList(3, 4, 5))))
-                .andExpect(jsonPath("contractor", is(6)))
-                .andExpect(jsonPath("contractor_name", is("Updated Contractor name")))
-                .andExpect(jsonPath("comment", is("new goal of project")))
-                .andExpect(jsonPath("start_date", is("01.01.2021")))
-                .andExpect(jsonPath("planned_end_date", is("01.01.2022")))
-                .andReturn()
-                .getResponse()
-                .getContentAsString();
-
-        final long id = Long.parseLong(new JSONObject(contentAsString).get("id").toString());
-
-        final Optional<ProjectEntity> existingProject = this.projectRepository.findById(id);
-        assertThat(existingProject.get().getName()).isEqualTo("updatedName");
-        assertThat(existingProject.get().getLeadingEmployee()).isEqualTo(2);
-        assertThat(existingProject.get().getContractor()).isEqualTo(6);
-        assertThat(existingProject.get().getContractorName()).isEqualTo("Updated Contractor name");
-        assertThat(existingProject.get().getComment()).isEqualTo("new goal of project");
-        assertThat(existingProject.get().getStartDate()).isEqualTo(LocalDate.of(2021, 1, 1));
-        assertThat(existingProject.get().getPlannedEndDate()).isEqualTo(LocalDate.of(2022, 1, 1));
-
-    }
-
-    @Test
-    void updateProjectShouldUpdateProjectPartially() throws Exception {
-        ProjectEntity project = new ProjectEntity();
-        project.setId(1);
-        project.setName("name");
-        project.setLeadingEmployee(1);
-        project.setContractor(1);
-        project.setComment("comment");
-        project.setEmployees(List.of(1L, 2L, 3L));
-        project.setContractorName("contractorName");
-        project.setStartDate(LocalDate.of(2021, 1, 1));
-        project.setPlannedEndDate(LocalDate.of(2023, 1, 1));
-        project.setEndDate(LocalDate.of(2024, 1, 1));
-        this.projectRepository.save(project);
-
-        String content = """
-                {}
-                """;
-
-        final String contentAsString = this.mockMvc.perform(
-                        put("/projects/1").content(content).contentType(MediaType.APPLICATION_JSON)
-                )
-                .andExpect(status().isOk())
-                .andExpect(jsonPath("name", is("name")))
-                .andExpect(jsonPath("leading_employee", is(1)))
-                .andExpect(jsonPath("employees", is(List.of(1, 2, 3))))
-                .andExpect(jsonPath("contractor", is(1)))
-                .andExpect(jsonPath("contractor_name", is("contractorName")))
-                .andExpect(jsonPath("comment", is("comment")))
-                .andExpect(jsonPath("start_date", is("01.01.2021")))
-                .andExpect(jsonPath("planned_end_date", is("01.01.2023")))
-                .andExpect(jsonPath("end_date", is("01.01.2024")))
-                .andReturn()
-                .getResponse()
-                .getContentAsString();
-
-        final long id = Long.parseLong(new JSONObject(contentAsString).get("id").toString());
-
-        final Optional<ProjectEntity> existingProject = this.projectRepository.findById(id);
-        assertThat(existingProject.get().getName()).isEqualTo("name");
-        assertThat(existingProject.get().getLeadingEmployee()).isEqualTo(1);
-        assertThat(existingProject.get().getContractor()).isEqualTo(1);
-        assertThat(existingProject.get().getContractorName()).isEqualTo("contractorName");
-        assertThat(existingProject.get().getComment()).isEqualTo("comment");
-        assertThat(existingProject.get().getStartDate()).isEqualTo(LocalDate.of(2021, 1, 1));
-        assertThat(existingProject.get().getPlannedEndDate()).isEqualTo(LocalDate.of(2023, 1, 1));
-        assertThat(existingProject.get().getEndDate()).isEqualTo(LocalDate.of(2024, 1, 1));
-    }
-
-    @Test
-    void updateProjectShouldReturnNotFoundResponseWhenProjectIsNotFound() throws Exception {
-        this.mockMvc.perform(put("/projects/98723498798").content("{}").contentType(MediaType.APPLICATION_JSON)).andExpect(status().isNotFound());
-    }
-}
--- a/src/test/resources/application-test.properties
+++ b/src/test/resources/application-test.properties
@ -1,6 +0,0 @@
-spring.datasource.url=jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
-spring.datasource.driverClassName=org.h2.Driver
-spring.datasource.username=sa
-spring.datasource.password=password
-spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
-spring.jpa.hibernate.ddl-auto=create-drop