# Copyright 2015 The TensorFlow 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.

# ==============================================================================

"""Sanity tests for tf.flags."""

from __future__ import absolute_import

from __future__ import division

from __future__ import print_function

import sys

import unittest

from absl import flags as absl_flags

from tensorflow.python.platform import flags

from tensorflow.python.platform import test

flags.DEFINE_string(

flag_name='old_string', default_value='default', docstring='docstring')

flags.DEFINE_string(

name='new_string', default='default', help='docstring')

flags.DEFINE_integer(

flag_name='old_integer', default_value=1, docstring='docstring')

flags.DEFINE_integer(

name='new_integer', default=1, help='docstring')

flags.DEFINE_float(

flag_name='old_float', default_value=1.5, docstring='docstring')

flags.DEFINE_float(

name='new_float', default=1.5, help='docstring')

flags.DEFINE_bool(

flag_name='old_bool', default_value=True, docstring='docstring')

flags.DEFINE_bool(

name='new_bool', default=True, help='docstring')

flags.DEFINE_boolean(

flag_name='old_boolean', default_value=False, docstring='docstring')

flags.DEFINE_boolean(

name='new_boolean', default=False, help='docstring')

class FlagsTest(unittest.TestCase):

def setUp(self):

self.original_flags = flags.FlagValues()

self.wrapped_flags = flags._FlagValuesWrapper(self.original_flags)

flags.DEFINE_string(

'test', 'default', 'test flag', flag_values=self.wrapped_flags)

def test_attribute_overrides(self):

# Test that methods defined in absl.flags.FlagValues are the same as the

# wrapped ones.

self.assertEqual(flags.FLAGS.is_parsed, absl_flags.FLAGS.is_parsed)

def test_getattr(self):

self.assertFalse(self.wrapped_flags.is_parsed())

with test.mock.patch.object(sys, 'argv', new=['program', '--test=new']):

self.assertEqual('new', self.wrapped_flags.test)

self.assertTrue(self.wrapped_flags.is_parsed())

def test_setattr(self):

self.assertEqual('default', self.wrapped_flags.test)

self.wrapped_flags.test = 'new'

self.assertEqual('new', self.wrapped_flags.test)

def test_delattr(self):

del self.wrapped_flags.test

self.assertNotIn('test', self.wrapped_flags)

with self.assertRaises(AttributeError):

_ = self.wrapped_flags.test

def test_dir(self):

self.assertEqual(['test'], dir(self.wrapped_flags))

def test_getitem(self):

self.assertIs(self.original_flags['test'], self.wrapped_flags['test'])

def test_setitem(self):

flag = flags.Flag(flags.ArgumentParser(), flags.ArgumentSerializer(),

'fruit', 'apple', 'the fruit type')

self.wrapped_flags['fruit'] = flag

self.assertIs(self.original_flags['fruit'], self.wrapped_flags['fruit'])

self.assertEqual('apple', self.wrapped_flags.fruit)

def test_len(self):

self.assertEqual(1, len(self.wrapped_flags))

def test_iter(self):

self.assertEqual(['test'], list(self.wrapped_flags))

def test_str(self):

self.assertEqual(str(self.wrapped_flags), str(self.original_flags))

def test_call(self):

self.wrapped_flags(['program', '--test=new'])

self.assertEqual('new', self.wrapped_flags.test)

def test_keyword_arguments(self):

test_cases = (

('old_string', 'default'),

('new_string', 'default'),

('old_integer', 1),

('new_integer', 1),

('old_float', 1.5),

('new_float', 1.5),

('old_bool', True),

('new_bool', True),

('old_boolean', False),

('new_boolean', False),

)

for flag_name, default_value in test_cases:

self.assertEqual(default_value, absl_flags.FLAGS[flag_name].default)

self.assertEqual('docstring', absl_flags.FLAGS[flag_name].help)

if __name__ == '__main__':

unittest.main()