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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 exceptions module."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.python.autograph.operators import exceptions
from tensorflow.python.framework import constant_op
from tensorflow.python.framework import errors_impl
from tensorflow.python.platform import test
class ExceptionsTest(test.TestCase):
def test_assert_tf_untriggered(self):
with self.cached_session() as sess:
t = exceptions.assert_stmt(
constant_op.constant(True), lambda: constant_op.constant('ignored'))
sess.run(t)
def test_assert_tf_triggered(self):
with self.cached_session() as sess:
t = exceptions.assert_stmt(
constant_op.constant(False),
lambda: constant_op.constant('test message'))
with self.assertRaisesRegexp(errors_impl.InvalidArgumentError,
'test message'):
sess.run(t)
def test_assert_tf_multiple_printed_values(self):
two_tensors = [
constant_op.constant('test message'),
constant_op.constant('another message')
]
with self.cached_session() as sess:
t = exceptions.assert_stmt(
constant_op.constant(False), lambda: two_tensors)
with self.assertRaisesRegexp(errors_impl.InvalidArgumentError,
'test message.*another message'):
sess.run(t)
def test_assert_python_untriggered(self):
side_effect_trace = []
def expression_with_side_effects():
side_effect_trace.append(object())
return 'test message'
exceptions.assert_stmt(True, expression_with_side_effects)
self.assertListEqual(side_effect_trace, [])
def test_assert_python_triggered(self):
if not __debug__:
# Python assertions only be tested when in debug mode.
return
side_effect_trace = []
tracer = object()
def expression_with_side_effects():
side_effect_trace.append(tracer)
return 'test message'
with self.assertRaisesRegexp(AssertionError, 'test message'):
exceptions.assert_stmt(False, expression_with_side_effects)
self.assertListEqual(side_effect_trace, [tracer])
if __name__ == '__main__':
test.main()
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