Add "overwrite-settings" input parameter (#136)

* add overwrite-settings parameter

* fix e2e tests

* print debug

* fix e2e tests

* add comment

* remove comment

.github/workflows/e2e-publishing.yml

@@ -11,6 +11,10 @@ on:
     paths-ignore:
       - '**.md'
 
+defaults:
+  run:
+    shell: pwsh
+
 jobs:
   setup-java-publishing:
     name: Validate settings.xml
@@ -34,12 +38,7 @@ jobs:
           gpg-passphrase: MAVEN_GPG_PASSPHRASE
       - name: Validate settings.xml
         run: |
-          $homePath = $env:USERPROFILE
-          if (-not $homePath) {
-            $homePath = $env:HOME
-          }
-          $xmlPath = Join-Path $homePath ".m2" "settings.xml"
-
+          $xmlPath = Join-Path $HOME ".m2" "settings.xml"
           Get-Content $xmlPath | ForEach-Object { Write-Host $_ }
 
           [xml]$xml = Get-Content $xmlPath
@@ -51,10 +50,82 @@ jobs:
           if (($servers[1].id -ne 'gpg.passphrase') -or ($servers[1].passphrase -ne '${env.MAVEN_GPG_PASSPHRASE}')) {
             throw "Generated XML file is incorrect"
           }
-        shell: pwsh
+
+  test-publishing-overwrite:
+    name: settings.xml is overwritten if flag is true
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Create fake settings.xml
+        run: |
+          $xmlDirectory = Join-Path $HOME ".m2"
+          $xmlPath = Join-Path $xmlDirectory "settings.xml"
+          New-Item -Path $xmlDirectory -ItemType Directory
+          Set-Content -Path $xmlPath -Value "Fake_XML"
+      - name: setup-java
+        uses: ./
+        id: setup-java
+        with:
+          distribution: 'adopt'
+          java-version: '11'
+          server-id: maven
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_CENTRAL_TOKEN
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE
+      - name: Validate settings.xml is overwritten
+        run: |
+          $xmlPath = Join-Path $HOME ".m2" "settings.xml"
+          Get-Content $xmlPath | ForEach-Object { Write-Host $_ }
+
+          $content = Get-Content $xmlPath -Raw
+          if ($content -notlike '*maven*') {
+            throw "settings.xml file is not overwritten"
+          }
+  
+  test-publishing-skip-overwrite:
+    name: settings.xml is not overwritten if flag is false
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Create fake settings.xml
+        run: |
+          $xmlDirectory = Join-Path $HOME ".m2"
+          $xmlPath = Join-Path $xmlDirectory "settings.xml"
+          New-Item -Path $xmlDirectory -ItemType Directory
+          Set-Content -Path $xmlPath -Value "Fake_XML"
+      - name: setup-java
+        uses: ./
+        id: setup-java
+        with:
+          distribution: 'adopt'
+          java-version: '11'
+          server-id: maven
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_CENTRAL_TOKEN
+          overwrite-settings: false
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE
+      - name: Validate that settings.xml is not overwritten
+        run: |
+          $xmlPath = Join-Path $HOME ".m2" "settings.xml"
+          $content = Get-Content -Path $xmlPath -Raw
+          Write-Host $content
+
+          if ($content -notlike "*Fake_XML*") {
+            throw "settings.xml file was overwritten but it should not be"
+          }
 
   test-publishing-custom-location:
-    name: Validate settings.xml in custom location
+    name: settings.xml in custom location
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -79,5 +150,4 @@ jobs:
           $path = Join-Path $env:RUNNER_TEMP "settings.xml"
           if (-not (Test-Path $path)) {
             throw "settings.xml file is not found in expected location"
-          }
-        shell: pwsh
+          }