text: # Copyright 2019 The Bazel Authors. All rights reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import os
  import tempfile
  import unittest
  
  import helpers
  
  
  class GetFlagValueTestCase(unittest.TestCase):
  
    def testNonStripped(self):
      self.assertEqual(helpers.GetFlagValue('value ', strip=False), 'value ')
  
    def testStripped(self):
      self.assertEqual(helpers.GetFlagValue('value ', strip=True), 'value')
  
    def testNonStripped_fromFile(self):
      with tempfile.TemporaryDirectory() as temp_d:
        argfile_path = os.path.join(temp_d, 'argfile')
        with open(argfile_path, 'wb') as f:
          f.write(b'value ')
        self.assertEqual(
            helpers.GetFlagValue('@'+argfile_path, strip=False), 'value ')
  
    def testStripped_fromFile(self):
      with tempfile.TemporaryDirectory() as temp_d:
        argfile_path = os.path.join(temp_d, 'argfile')
        with open(argfile_path, 'wb') as f:
          f.write(b'value ')
        self.assertEqual(
            helpers.GetFlagValue('@'+argfile_path, strip=True), 'value')
  
  
  class SplitNameValuePairAtSeparatorTestCase(unittest.TestCase):
  
    def testNoSep(self):
      key, val = helpers.SplitNameValuePairAtSeparator('abc', '=')
      self.assertEqual(key, 'abc')
      self.assertEqual(val, '')
  
    def testNoSepWithEscape(self):
      key, val = helpers.SplitNameValuePairAtSeparator('a\\=bc', '=')
      self.assertEqual(key, 'a=bc')
      self.assertEqual(val, '')
  
    def testNoSepWithDanglingEscape(self):
      key, val = helpers.SplitNameValuePairAtSeparator('abc\\', '=')
      self.assertEqual(key, 'abc')
      self.assertEqual(val, '')
  
    def testHappyCase(self):
      key, val = helpers.SplitNameValuePairAtSeparator('abc=xyz', '=')
      self.assertEqual(key, 'abc')
      self.assertEqual(val, 'xyz')
  
    def testHappyCaseWithEscapes(self):
      key, val = helpers.SplitNameValuePairAtSeparator('a\\=\\=b\\=c=xyz', '=')
      self.assertEqual(key, 'a==b=c')
      self.assertEqual(val, 'xyz')
  
    def testStopsAtFirstSep(self):
      key, val = helpers.SplitNameValuePairAtSeparator('a=b=c', '=')
      self.assertEqual(key, 'a')
      self.assertEqual(val, 'b=c')
  
    def testDoesntUnescapeVal(self):
      key, val = helpers.SplitNameValuePairAtSeparator('abc=x\\=yz\\', '=')
      self.assertEqual(key, 'abc')
      # the val doesn't get unescaped at all
      self.assertEqual(val, 'x\\=yz\\')
  
    def testUnescapesNonsepCharsToo(self):
      key, val = helpers.SplitNameValuePairAtSeparator('na\\xffme=value', '=')
      # this behaviour is surprising
      self.assertEqual(key, 'naxffme')
      self.assertEqual(val, 'value')
  
  if __name__ == '__main__':
    unittest.main()
  