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# Copyright 2017 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.
# ==============================================================================
"""Tests for Estimator related util."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import functools
from tensorflow.python.platform import test
from tensorflow.python.util import function_utils
def silly_example_function():
pass
class SillyCallableClass(object):
def __call__(self):
pass
class FnArgsTest(test.TestCase):
def test_simple_function(self):
def fn(a, b):
return a + b
self.assertEqual(('a', 'b'), function_utils.fn_args(fn))
def test_callable(self):
class Foo(object):
def __call__(self, a, b):
return a + b
self.assertEqual(('a', 'b'), function_utils.fn_args(Foo()))
def test_bounded_method(self):
class Foo(object):
def bar(self, a, b):
return a + b
self.assertEqual(('a', 'b'), function_utils.fn_args(Foo().bar))
def test_partial_function(self):
expected_test_arg = 123
def fn(a, test_arg):
if test_arg != expected_test_arg:
return ValueError('partial fn does not work correctly')
return a
wrapped_fn = functools.partial(fn, test_arg=123)
self.assertEqual(('a',), function_utils.fn_args(wrapped_fn))
def test_partial_function_with_positional_args(self):
expected_test_arg = 123
def fn(test_arg, a):
if test_arg != expected_test_arg:
return ValueError('partial fn does not work correctly')
return a
wrapped_fn = functools.partial(fn, 123)
self.assertEqual(('a',), function_utils.fn_args(wrapped_fn))
self.assertEqual(3, wrapped_fn(3))
self.assertEqual(3, wrapped_fn(a=3))
def test_double_partial(self):
expected_test_arg1 = 123
expected_test_arg2 = 456
def fn(a, test_arg1, test_arg2):
if test_arg1 != expected_test_arg1 or test_arg2 != expected_test_arg2:
return ValueError('partial does not work correctly')
return a
wrapped_fn = functools.partial(fn, test_arg2=456)
double_wrapped_fn = functools.partial(wrapped_fn, test_arg1=123)
self.assertEqual(('a',), function_utils.fn_args(double_wrapped_fn))
def test_double_partial_with_positional_args_in_outer_layer(self):
expected_test_arg1 = 123
expected_test_arg2 = 456
def fn(test_arg1, a, test_arg2):
if test_arg1 != expected_test_arg1 or test_arg2 != expected_test_arg2:
return ValueError('partial fn does not work correctly')
return a
wrapped_fn = functools.partial(fn, test_arg2=456)
double_wrapped_fn = functools.partial(wrapped_fn, 123)
self.assertEqual(('a',), function_utils.fn_args(double_wrapped_fn))
self.assertEqual(3, double_wrapped_fn(3))
self.assertEqual(3, double_wrapped_fn(a=3))
def test_double_partial_with_positional_args_in_both_layers(self):
expected_test_arg1 = 123
expected_test_arg2 = 456
def fn(test_arg1, test_arg2, a):
if test_arg1 != expected_test_arg1 or test_arg2 != expected_test_arg2:
return ValueError('partial fn does not work correctly')
return a
wrapped_fn = functools.partial(fn, 123) # binds to test_arg1
double_wrapped_fn = functools.partial(wrapped_fn, 456) # binds to test_arg2
self.assertEqual(('a',), function_utils.fn_args(double_wrapped_fn))
self.assertEqual(3, double_wrapped_fn(3))
self.assertEqual(3, double_wrapped_fn(a=3))
class HasKwargsTest(test.TestCase):
def test_simple_function(self):
fn_has_kwargs = lambda **x: x
self.assertTrue(function_utils.has_kwargs(fn_has_kwargs))
fn_has_no_kwargs = lambda x: x
self.assertFalse(function_utils.has_kwargs(fn_has_no_kwargs))
def test_callable(self):
class FooHasKwargs(object):
def __call__(self, **x):
del x
self.assertTrue(function_utils.has_kwargs(FooHasKwargs()))
class FooHasNoKwargs(object):
def __call__(self, x):
del x
self.assertFalse(function_utils.has_kwargs(FooHasNoKwargs()))
def test_bounded_method(self):
class FooHasKwargs(object):
def fn(self, **x):
del x
self.assertTrue(function_utils.has_kwargs(FooHasKwargs().fn))
class FooHasNoKwargs(object):
def fn(self, x):
del x
self.assertFalse(function_utils.has_kwargs(FooHasNoKwargs().fn))
def test_partial_function(self):
expected_test_arg = 123
def fn_has_kwargs(test_arg, **x):
if test_arg != expected_test_arg:
return ValueError('partial fn does not work correctly')
return x
wrapped_fn = functools.partial(fn_has_kwargs, test_arg=123)
self.assertTrue(function_utils.has_kwargs(wrapped_fn))
some_kwargs = dict(x=1, y=2, z=3)
self.assertEqual(wrapped_fn(**some_kwargs), some_kwargs)
def fn_has_no_kwargs(x, test_arg):
if test_arg != expected_test_arg:
return ValueError('partial fn does not work correctly')
return x
wrapped_fn = functools.partial(fn_has_no_kwargs, test_arg=123)
self.assertFalse(function_utils.has_kwargs(wrapped_fn))
some_arg = 1
self.assertEqual(wrapped_fn(some_arg), some_arg)
def test_double_partial(self):
expected_test_arg1 = 123
expected_test_arg2 = 456
def fn_has_kwargs(test_arg1, test_arg2, **x):
if test_arg1 != expected_test_arg1 or test_arg2 != expected_test_arg2:
return ValueError('partial does not work correctly')
return x
wrapped_fn = functools.partial(fn_has_kwargs, test_arg2=456)
double_wrapped_fn = functools.partial(wrapped_fn, test_arg1=123)
self.assertTrue(function_utils.has_kwargs(double_wrapped_fn))
some_kwargs = dict(x=1, y=2, z=3)
self.assertEqual(double_wrapped_fn(**some_kwargs), some_kwargs)
def fn_has_no_kwargs(x, test_arg1, test_arg2):
if test_arg1 != expected_test_arg1 or test_arg2 != expected_test_arg2:
return ValueError('partial does not work correctly')
return x
wrapped_fn = functools.partial(fn_has_no_kwargs, test_arg2=456)
double_wrapped_fn = functools.partial(wrapped_fn, test_arg1=123)
self.assertFalse(function_utils.has_kwargs(double_wrapped_fn))
some_arg = 1
self.assertEqual(double_wrapped_fn(some_arg), some_arg)
def test_raises_type_error(self):
with self.assertRaisesRegexp(
TypeError, 'fn should be a function-like object'):
function_utils.has_kwargs('not a function')
class GetFuncNameTest(test.TestCase):
def testWithSimpleFunction(self):
self.assertEqual(
'silly_example_function',
function_utils.get_func_name(silly_example_function))
def testWithClassMethod(self):
self.assertEqual(
'GetFuncNameTest.testWithClassMethod',
function_utils.get_func_name(self.testWithClassMethod))
def testWithCallableClass(self):
callable_instance = SillyCallableClass()
self.assertRegexpMatches(
function_utils.get_func_name(callable_instance),
'<.*SillyCallableClass.*>')
def testWithFunctoolsPartial(self):
partial = functools.partial(silly_example_function)
self.assertRegexpMatches(
function_utils.get_func_name(partial),
'<.*functools.partial.*>')
def testWithLambda(self):
anon_fn = lambda x: x
self.assertEqual('<lambda>', function_utils.get_func_name(anon_fn))
def testRaisesWithNonCallableObject(self):
with self.assertRaises(ValueError):
function_utils.get_func_name(None)
class GetFuncCodeTest(test.TestCase):
def testWithSimpleFunction(self):
code = function_utils.get_func_code(silly_example_function)
self.assertIsNotNone(code)
self.assertRegexpMatches(code.co_filename, 'function_utils_test.py')
def testWithClassMethod(self):
code = function_utils.get_func_code(self.testWithClassMethod)
self.assertIsNotNone(code)
self.assertRegexpMatches(code.co_filename, 'function_utils_test.py')
def testWithCallableClass(self):
callable_instance = SillyCallableClass()
code = function_utils.get_func_code(callable_instance)
self.assertIsNotNone(code)
self.assertRegexpMatches(code.co_filename, 'function_utils_test.py')
def testWithLambda(self):
anon_fn = lambda x: x
code = function_utils.get_func_code(anon_fn)
self.assertIsNotNone(code)
self.assertRegexpMatches(code.co_filename, 'function_utils_test.py')
def testWithFunctoolsPartial(self):
partial = functools.partial(silly_example_function)
code = function_utils.get_func_code(partial)
self.assertIsNone(code)
def testRaisesWithNonCallableObject(self):
with self.assertRaises(ValueError):
function_utils.get_func_code(None)
if __name__ == '__main__':
test.main()
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