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

native_client_sdk/src/tools/tests/nacl_config_test.py

 #!/usr/bin/env python
 # Copyright 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__))
 TOOLS_DIR = os.path.dirname(SCRIPT_DIR)
 CHROME_SRC = os.path.dirname(os.path.dirname(os.path.dirname(TOOLS_DIR)))
-MOCK_DIR = os.path.join(CHROME_SRC, "third_party", "pymock")
+MOCK_DIR = os.path.join(CHROME_SRC, 'third_party', 'pymock')
 
 # For the mock library
 sys.path.append(MOCK_DIR)
 import mock
 
 # For nacl_config, the module under test
 sys.path.append(TOOLS_DIR)
 import nacl_config
 
 
 class TestNaclConfig(unittest.TestCase):
   def setUp(self):
     self.patches = []
 
     get_sdk_path = self.AddAndStartPatch('getos.GetSDKPath')
     get_sdk_path.return_value = '/sdk_root'
 
     get_platform = self.AddAndStartPatch('getos.GetPlatform')
     get_platform.return_value = 'mac'
 
   def tearDown(self):
     for patch in self.patches:
       patch.stop()
 
   def AddAndStartPatch(self, name):
     patch = mock.patch(name)
     self.patches.append(patch)
     return patch.start()
 
+  @mock.patch('nacl_config.GetCFlags')
+  def testMainArgParsing(self, mock_get_cflags):
+    mock_get_cflags.return_value = 'flags'
+    with mock.patch('sys.stdout'):
+      nacl_config.main(['--cflags'])
+    mock_get_cflags.assert_called()
+
   def testCFlags(self):
     cases = {
         'newlib': '-I/sdk_root/include -I/sdk_root/include/newlib',
         'glibc': '-I/sdk_root/include -I/sdk_root/include/glibc',
         'pnacl': '-I/sdk_root/include -I/sdk_root/include/pnacl',
         'win': '-I/sdk_root/include -I/sdk_root/include/win',
         'mac': '-I/sdk_root/include -I/sdk_root/include/mac',
         'linux': '-I/sdk_root/include -I/sdk_root/include/linux'
     }
     for toolchain, expected in cases.iteritems():
@@ skipping 78 matching lines @@
     # We always use the same gdb (it supports multiple toolchains/architectures)
     expected = '/sdk_root/toolchain/mac_x86_newlib/bin/x86_64-nacl-gdb'
     for toolchain in ('newlib', 'glibc', 'pnacl'):
       for arch in ('x86_32', 'x86_64', 'arm'):
         self.assertEqual(expected,
                          nacl_config.GetToolPath(toolchain, arch, 'gdb'))
 
 
 if __name__ == '__main__':
   unittest.main()