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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 templates module."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import gast
from tensorflow.contrib.autograph.pyct import anno
from tensorflow.contrib.autograph.pyct import parser
from tensorflow.contrib.autograph.pyct import transformer
from tensorflow.python.platform import test
class TransformerTest(test.TestCase):
def _simple_source_info(self):
return transformer.EntityInfo(
source_code=None,
source_file=None,
namespace=None,
arg_values=None,
arg_types=None,
owner_type=None)
def test_entity_scope_tracking(self):
class TestTransformer(transformer.Base):
# The choice of note to assign to is arbitrary. Using Assign because it's
# easy to find in the tree.
def visit_Assign(self, node):
anno.setanno(node, 'enclosing_entities', self.enclosing_entities)
return self.generic_visit(node)
# This will show up in the lambda function.
def visit_BinOp(self, node):
anno.setanno(node, 'enclosing_entities', self.enclosing_entities)
return self.generic_visit(node)
tr = TestTransformer(self._simple_source_info())
def test_function():
a = 0
class TestClass(object):
def test_method(self):
b = 0
def inner_function(x):
c = 0
d = lambda y: (x + y)
return c, d
return b, inner_function
return a, TestClass
node, _ = parser.parse_entity(test_function)
node = tr.visit(node)
test_function_node = node.body[0]
test_class = test_function_node.body[1]
test_method = test_class.body[0]
inner_function = test_method.body[1]
lambda_node = inner_function.body[1].value
a = test_function_node.body[0]
b = test_method.body[0]
c = inner_function.body[0]
lambda_expr = lambda_node.body
self.assertEqual(
(test_function_node,), anno.getanno(a, 'enclosing_entities'))
self.assertEqual((test_function_node, test_class, test_method),
anno.getanno(b, 'enclosing_entities'))
self.assertEqual(
(test_function_node, test_class, test_method, inner_function),
anno.getanno(c, 'enclosing_entities'))
self.assertEqual((test_function_node, test_class, test_method,
inner_function, lambda_node),
anno.getanno(lambda_expr, 'enclosing_entities'))
def test_local_scope_info_stack(self):
class TestTransformer(transformer.Base):
# Extract all string constants from the block.
def visit_Str(self, node):
self.set_local('string', self.get_local('string', default='') + node.s)
return self.generic_visit(node)
def _annotate_result(self, node):
self.enter_local_scope()
node = self.generic_visit(node)
anno.setanno(node, 'test', self.get_local('string'))
self.exit_local_scope()
return node
def visit_While(self, node):
return self._annotate_result(node)
def visit_For(self, node):
return self._annotate_result(node)
tr = TestTransformer(self._simple_source_info())
def test_function(a):
"""Docstring."""
assert a == 'This should not be counted'
for i in range(3):
_ = 'a'
if i > 2:
return 'b'
else:
_ = 'c'
while True:
raise '1'
return 'nor this'
node, _ = parser.parse_entity(test_function)
node = tr.visit(node)
for_node = node.body[0].body[2]
while_node = for_node.body[1].orelse[1]
self.assertFalse(anno.hasanno(for_node, 'string'))
self.assertEqual('abc', anno.getanno(for_node, 'test'))
self.assertFalse(anno.hasanno(while_node, 'string'))
self.assertEqual('1', anno.getanno(while_node, 'test'))
def test_local_scope_info_stack_checks_integrity(self):
class TestTransformer(transformer.Base):
def visit_If(self, node):
self.enter_local_scope()
return self.generic_visit(node)
def visit_For(self, node):
node = self.generic_visit(node)
self.exit_local_scope()
return node
tr = TestTransformer(self._simple_source_info())
def no_exit(a):
if a > 0:
print(a)
return None
node, _ = parser.parse_entity(no_exit)
with self.assertRaises(AssertionError):
tr.visit(node)
def no_entry(a):
for _ in a:
print(a)
node, _ = parser.parse_entity(no_entry)
with self.assertRaises(AssertionError):
tr.visit(node)
def test_visit_block_postprocessing(self):
class TestTransformer(transformer.Base):
def _process_body_item(self, node):
if isinstance(node, gast.Assign) and (node.value.id == 'y'):
if_node = gast.If(gast.Name('x', gast.Load(), None), [node], [])
return if_node, if_node.body
return node, None
def visit_FunctionDef(self, node):
node.body = self.visit_block(
node.body, after_visit=self._process_body_item)
return node
def test_function(x, y):
z = x
z = y
return z
tr = TestTransformer(self._simple_source_info())
node, _ = parser.parse_entity(test_function)
node = tr.visit(node)
node = node.body[0]
self.assertEqual(len(node.body), 2)
self.assertTrue(isinstance(node.body[0], gast.Assign))
self.assertTrue(isinstance(node.body[1], gast.If))
self.assertTrue(isinstance(node.body[1].body[0], gast.Assign))
self.assertTrue(isinstance(node.body[1].body[1], gast.Return))
if __name__ == '__main__':
test.main()
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