From 5b8009d9e6d6f3c94afa1f7fe50f026958712d0e Mon Sep 17 00:00:00 2001
From: Jan Klattenhoff <jan@kjan.de>
Date: Tue, 4 Mar 2025 15:39:20 +0100
Subject: [PATCH] feat: add initial module and main functionality

---
 go.mod       |  3 +++
 main.go      | 10 ++++++++++
 test/test.go | 29 +++++++++++++++++++++++++++++
 3 files changed, 42 insertions(+)
 create mode 100644 go.mod
 create mode 100644 main.go
 create mode 100644 test/test.go

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..0b98b71
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module go-workshop
+
+go 1.24.0
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..98a359f
--- /dev/null
+++ b/main.go
@@ -0,0 +1,10 @@
+package main
+
+import "go-workshop/test"
+
+func main() {
+	err := test.PrintString("")
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/test/test.go b/test/test.go
new file mode 100644
index 0000000..ce6d37e
--- /dev/null
+++ b/test/test.go
@@ -0,0 +1,29 @@
+package test
+
+import (
+	"fmt"
+)
+
+// CustomError represents my custom error
+type CustomError struct {
+	Message string
+	Code    string
+}
+
+// Error implements error.
+func (c CustomError) Error() string {
+	return fmt.Sprintf("CustomError\nMessage: %s\nCode: %s\n", c.Message, c.Code)
+}
+
+// PrintString prints a string when not empty
+func PrintString(str string) (err error) {
+	if str == "" {
+		return CustomError{
+			Message: "Input is empty",
+			Code:    "some code",
+		}
+	}
+
+	fmt.Println(str)
+	return
+}