refactor: implement mocking functions and tests

utils_test.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"os/exec"
+	"testing"
+)
+
+func TestMax(t *testing.T) {
+	tests := []struct {
+		a, b, want int
+	}{
+		{1, 2, 2},
+		{5, 3, 5},
+		{0, 0, 0},
+		{-1, -5, -1},
+	}
+
+	for _, tt := range tests {
+		got := max(tt.a, tt.b)
+		if got != tt.want {
+			t.Errorf("max(%d, %d) = %d; want %d", tt.a, tt.b, got, tt.want)
+		}
+	}
+}
+
+func TestExecuteShellCommand(t *testing.T) {
+	// Mock execCommand
+	oldExecCommand := execCommand
+	defer func() { execCommand = oldExecCommand }()
+
+	execCommand = func(command string, args ...string) *exec.Cmd {
+		return exec.Command("echo", "mocked command")
+	}
+
+	err := executeShellCommand("test command", "TEST_ENV=value")
+	if err != nil {
+		t.Errorf("executeShellCommand() error = %v; want nil", err)
+	}
+}
+
+func TestInstallWithProgress(t *testing.T) {
+	mockManager := &MockPackageManager{
+		packages: []string{"pkg1", "pkg2"},
+	}
+
+	err := installWithProgress(mockManager, mockManager.packages)
+	if err != nil {
+		t.Errorf("installWithProgress() error = %v; want nil", err)
+	}
+
+	if len(mockManager.installedPackages) != len(mockManager.packages) {
+		t.Errorf("installWithProgress() installed %d packages; want %d", len(mockManager.installedPackages), len(mockManager.packages))
+	}
+}
+
+// MockPackageManager implementiert das PackageManager Interface für Tests
+type MockPackageManager struct {
+	packages          []string
+	installedPackages []string
+}
+
+func (m *MockPackageManager) Install(packages []string) error {
+	m.installedPackages = append(m.installedPackages, packages...)
+	return nil
+}
+
+func (m *MockPackageManager) InstallPackage(pkg string) error {
+	m.installedPackages = append(m.installedPackages, pkg)
+	return nil
+}
+
+func (m *MockPackageManager) InstallManager() error {
+	return nil
+}
+
+func (m *MockPackageManager) Name() string {
+	return "MockManager"
+}