Copy the existing gcloud config directory if it exists.

integration_test/agents/agents.go

@@ -851,7 +851,11 @@ func CommonSetupWithExtraCreateArgumentsAndMetadata(t *testing.T, imageSpec stri
 	t.Helper()
 	ctx, cancel := context.WithTimeout(context.Background(), gce.SuggestedTimeout)
 	t.Cleanup(cancel)
-	ctx = gce.WithGcloudConfigDir(ctx, t.TempDir())
+	gcloudConfigDir := t.TempDir()
+	if err := gce.SetupGcloudConfigDir(ctx, gcloudConfigDir); err != nil {
+		t.Fatalf("Unable to set up a gcloud config directory: %v", err)
+	}
+	ctx = gce.WithGcloudConfigDir(ctx, gcloudConfigDir)
 
 	logger := gce.SetupLogger(t)
 	logger.ToMainLog().Println("Calling SetupVM(). For details, see VM_initialization.txt.")

integration_test/gce/gce_testing.go

@@ -739,6 +739,31 @@ func runCommand(ctx context.Context, logger *log.Logger, stdin io.Reader, args [
 	return output, err
 }
 
+// getGcloudConfigDir returns the current gcloud configuration directory.
+func getGcloudConfigDir(ctx context.Context) (string, error) {
+	out, err := RunGcloud(ctx, log.New(io.Discard, "", 0), "", []string{"info", "--format=value[terminator=''](config.paths.global_config_dir)"})
+	if err != nil {
+		return "", err
+	}
+	return out.Stdout, nil
+}
+
+// SetupGcloudConfigDir sets up a new gcloud configuration directory.
+// This copies the "configurations" subdirectory of the context-specified
+// configuration directory into the new directory.
+// This only works on Linux.
+func SetupGcloudConfigDir(ctx context.Context, directory string) error {
+	currentConfigDir, err := getGcloudConfigDir(ctx)
+	if err != nil {
+		return err
+	}
+	// TODO: Replace with os.CopyFS() once available.
+	if out, err := runCommand(ctx, log.New(io.Discard, "", 0), nil, []string{"cp", "-r", filepath.Join(currentConfigDir, "."), filepath.Join(directory, ".")}, nil); err != nil {
+		return fmt.Errorf("error copying directory contents: %s (%w)", out.Stderr, err)
+	}
+	return nil
+}
+
 const (
 	gcloudConfigDirKey = "__gcloud_config_dir__"
 )

integration_test/third_party_apps_test/main_test.go

@@ -983,7 +983,11 @@ func TestThirdPartyApps(t *testing.T) {
 
 			ctx, cancel := context.WithTimeout(context.Background(), gce.SuggestedTimeout)
 			defer cancel()
-			ctx = gce.WithGcloudConfigDir(ctx, t.TempDir())
+			gcloudConfigDir := t.TempDir()
+			if err := gce.SetupGcloudConfigDir(ctx, gcloudConfigDir); err != nil {
+				t.Fatalf("Unable to set up a gcloud config directory: %v", err)
+			}
+			ctx = gce.WithGcloudConfigDir(ctx, gcloudConfigDir)
 
 			var err error
 			for attempt := 1; attempt <= 4; attempt++ {