feat: refactor requirements.go

cmd/gogitlabber/prerequisites_test.go

@@ -1,37 +0,0 @@
-package main
-
-import (
-	"errors"
-	"testing"
-)
-
-// new type for the lookup function
-type lookPathFunc func(file string) (string, error)
-
-// modified function to accept a lookup function
-func verifyGitAvailableWithLookup(lookPath lookPathFunc) error {
-	_, err := lookPath("git")
-	if err != nil {
-		return errors.New("could not find git in path")
-	}
-	return nil
-}
-
-func TestVerifyGitAvailable(t *testing.T) {
-
-	// test case 1: git is available
-	err := verifyGitAvailableWithLookup(func(file string) (string, error) {
-		return "/usr/bin/git", nil
-	})
-	if err != nil {
-		t.Errorf("expected no error when git is available, got: %v", err)
-	}
-
-	// test case 2: git is not available
-	err = verifyGitAvailableWithLookup(func(file string) (string, error) {
-		return "", errors.New("git not found")
-	})
-	if err == nil {
-		t.Error("expected error when git is not available, got nil")
-	}
-}

cmd/gogitlabber/requirements.go

@@ -1,13 +1,15 @@
 package main
 
 import (
+	"fmt"
 	"os/exec"
 )
 
+// verify if git is available
 func verifyGitAvailable() error {
 	_, err := exec.LookPath("git")
 	if err != nil {
-		return err
+		return fmt.Errorf("git is not installed or not in PATH: %w", err)
 	}
 	return nil
 }