Added module for test-utilities used across all packages

Summary: Added new package with test utilities re-used by other packages

Reviewed By: mweststrate

Differential Revision: D21949629

fbshipit-source-id: 8bfa959401669dc8911a1f647f417cafd92c2e4b

desktop/test-utils/src/pathUtils.ts

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+export function normalizePath(path: string): string {
+  if (process.platform === 'win32') {
+    path = path.replace(/\\/g, '/');
+    path = path.substring(path.indexOf('/'));
+  }
+  return path;
+}