add TestIsValidProjectDir

Signed-off-by: Michael Valdron <mvaldron@redhat.com>

pkg/util/util.go

@@ -855,21 +855,15 @@
 // IsValidProjectDir checks that the folder to download the project from devfile is
 // either empty or only contains the devfile used.
 func IsValidProjectDir(path string, devfilePath string) error {
-	fileEntries, err := os.ReadDir(path)
+	return isValidProjectDirOnFS(path, devfilePath, filesystem.DefaultFs{})
+}
+
+func isValidProjectDirOnFS(path string, devfilePath string, fs filesystem.Filesystem) error {
+	files, err := fs.ReadDir(path)
 	if err != nil {
 		return err
 	}
 
-	files := make([]os.FileInfo, 0, len(fileEntries))
-	for _, fileEntry := range fileEntries {
-		info, err := fileEntry.Info()
-		if err != nil {
-			return err
-		}
-
-		files = append(files, info)
-	}
-
 	if len(files) > 1 {
 		return errors.Errorf("Folder %s is not empty. It can only contain the devfile used.", path)
 	} else if len(files) == 1 {
@@ -1100,7 +1094,7 @@
 	}
 	defer resp.Body.Close()
 
 	return io.ReadAll(resp.Body)
 }
 
 // DownloadInMemory uses HTTPRequestParams to download the file and return bytes.

pkg/util/util_test.go

@@ -853,6 +853,74 @@ func TestFilterIgnores(t *testing.T) {
 	}
 }
 
+func TestIsValidProjectDir(t *testing.T) {
+	const validProjectDirPath = "/projectDirs/validProjectDir"
+	const emptyProjectDirPath = "/projectDirs/emptyProjectDir"
+	const invalidProjectDirWithFiles = "/projectDirs/invalidProjectDirWithFiles"
+	const invalidProjectDirWithSubDirPath = "/projectDirs/invalidProjectDirWithSubDir"
+	fs := filesystem.NewFakeFs()
+	tests := []struct {
+		name             string
+		path             string
+		devfilePath      string
+		isDevfilePathDir bool
+		otherFiles       []string
+		wantErr          bool
+	}{
+		{
+			name:        "Case 1: Valid project directory",
+			path:        validProjectDirPath,
+			devfilePath: "devfile.yaml",
+		},
+		{
+			name: "Case 2: Valid empty project directory",
+			path: emptyProjectDirPath,
+		},
+		{
+			name:        "Case 3: Invalid project directory with files",
+			path:        invalidProjectDirWithFiles,
+			devfilePath: "devfile.yaml",
+			otherFiles:  []string{"package.json", "app.js"},
+			wantErr:     true,
+		},
+		{
+			name:             "Case 4: Invalid project directory with subdirectory",
+			path:             invalidProjectDirWithSubDirPath,
+			devfilePath:      "devfile",
+			isDevfilePathDir: true,
+			wantErr:          true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Create test projectDir
+			fs.MkdirAll(tt.path, os.ModePerm)
+
+			// create devfile (or subdir)
+			if tt.devfilePath != "" {
+				if tt.isDevfilePathDir {
+					fs.MkdirAll(filepath.Join(tt.path, tt.devfilePath), os.ModePerm)
+				} else {
+					fs.Create(filepath.Join(tt.path, tt.devfilePath))
+				}
+			}
+
+			// create other files
+			for _, otherFile := range tt.otherFiles {
+				fs.Create(filepath.Join(tt.path, otherFile))
+			}
+
+			err := isValidProjectDirOnFS(tt.path, tt.devfilePath, fs)
+			if !tt.wantErr && err != nil {
+				t.Errorf("Got unexpected error: %v", err)
+			} else if tt.wantErr && err == nil {
+				t.Errorf("Expected an error but got nil")
+			}
+		})
+	}
+}
+
 func TestDownloadFile(t *testing.T) {
 	// Start a local HTTP server
 	server := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {