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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 imp
import gast
from tensorflow.contrib.autograph.pyct import compiler
from tensorflow.contrib.autograph.pyct import parser
from tensorflow.contrib.autograph.pyct import templates
from tensorflow.python.platform import test
class TemplatesTest(test.TestCase):
def test_replace_tuple(self):
template = """
def test_fn(a, c):
return b,
"""
node = templates.replace(template, b=('a', 'c'))[0]
result, _ = compiler.ast_to_object(node)
self.assertEquals((2, 3), result.test_fn(2, 3))
def test_replace_variable(self):
template = """
def test_fn(a):
a += 1
a = 2 * a + 1
return b
"""
node = templates.replace(template, a='b')[0]
result, _ = compiler.ast_to_object(node)
self.assertEquals(7, result.test_fn(2))
def test_replace_function_name(self):
template = """
def fname(a):
a += 1
a = 2 * a + 1
return a
"""
node = templates.replace(template, fname='test_fn')[0]
result, _ = compiler.ast_to_object(node)
self.assertEquals(7, result.test_fn(2))
def test_replace_code_block(self):
template = """
def test_fn(a):
block
return a
"""
node = templates.replace(
template,
block=[
gast.Assign([
gast.Name('a', None, None)
], gast.BinOp(gast.Name('a', None, None), gast.Add(), gast.Num(1))),
] * 2)[0]
result, _ = compiler.ast_to_object(node)
self.assertEquals(3, result.test_fn(1))
def test_replace_attribute(self):
template = """
def test_fn(a):
return a.foo
"""
node = templates.replace(template, foo='b')[0]
result, _ = compiler.ast_to_object(node)
mod = imp.new_module('test')
mod.b = 3
self.assertEquals(3, result.test_fn(mod))
with self.assertRaises(ValueError):
templates.replace(template, foo=1)
def test_replace_call_keyword(self):
template = """
def test_fn():
def f(a, d, f):
return a + d + f
return f(1, kws=None)
"""
source = parser.parse_expression('f(d=3, f=5)')
node = templates.replace(template, kws=source.keywords)[0]
result, _ = compiler.ast_to_object(node)
self.assertEquals(9, result.test_fn())
with self.assertRaises(ValueError):
templates.replace(template, kws=[])
templates.replace(template, kws=1)
def test_replace_name_with_call(self):
template = """
def test_fn():
b = 5
def g(a):
return 3 * a
def f():
return g
return foo
"""
source = parser.parse_expression('f()(b)')
node = templates.replace(template, foo=source)[0]
result, _ = compiler.ast_to_object(node)
self.assertEquals(15, result.test_fn())
def test_replace_name_with_dict(self):
template = """
def test_fn():
return foo['bar']
"""
source = parser.parse_expression('{\'bar\': 3}')
node = templates.replace(template, foo=source)[0]
result, _ = compiler.ast_to_object(node)
self.assertEquals(3, result.test_fn())
def replace_as_expression(self):
template = """
foo(a)
"""
node = templates.replace(template, foo='bar', a='baz')
self.assertTrue(node is gast.Call)
self.assertEqual(node.func.id, 'bar')
self.assertEqual(node.func.args[0].id, 'baz')
def replace_as_expression_restrictions(self):
template = """
foo(a)
bar(b)
"""
with self.assertRaises(ValueError):
templates.replace_as_expression(template)
with self.assertRaises(ValueError):
templates.replace('')
with self.assertRaises(ValueError):
templates.replace('a = b')
if __name__ == '__main__':
test.main()
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