[NaCl SDK] Convert python scripts from optparse to argparse.

native_client_sdk/src/build_tools/tests/test_projects_test.py

+#!/usr/bin/env python
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os
+import sys
+import unittest
+
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+BUILD_TOOLS_DIR = os.path.dirname(SCRIPT_DIR)
+CHROME_SRC = os.path.dirname(os.path.dirname(os.path.dirname(BUILD_TOOLS_DIR)))
+MOCK_DIR = os.path.join(CHROME_SRC, 'third_party', 'pymock')
+
+sys.path.append(BUILD_TOOLS_DIR)
+sys.path.append(MOCK_DIR)
+
+import mock
+import test_projects
+
+class TestMain(unittest.TestCase):
+  """Tests for main() entry point of the script."""
+
+  def testInvalidArgs(self):
+    with mock.patch('sys.stderr'):
+      with self.assertRaises(SystemExit):
+        test_projects.main(['--foo'])
+
+
+if __name__ == '__main__':
+  unittest.main()