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diff --git a/tensorflow/python/autograph/core/naming_test.py b/tensorflow/python/autograph/core/naming_test.py
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+++ b/tensorflow/python/autograph/core/naming_test.py
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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 naming module."""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
+from tensorflow.python.autograph.core import naming
+from tensorflow.python.platform import test
+
+
+class NamerTest(test.TestCase):
+
+  def test_compiled_function_name_tracks_names(self):
+    def bar():
+      pass
+
+    namer = naming.Namer({}, True, None, ())
+    self.assertEqual(('tf__foo', True), namer.compiled_function_name('foo'))
+    self.assertEqual(('tf__bar', True), namer.compiled_function_name(
+        'bar', bar))
+    self.assertEqual({bar: 'tf__bar'}, namer.renamed_calls)
+    self.assertItemsEqual(('tf__bar', 'tf__foo'), namer.generated_names)
+
+  def test_compiled_function_name_consistent(self):
+    def foo():
+      pass
+
+    namer = naming.Namer({}, True, None, ())
+    self.assertEqual(('tf__foo', True), namer.compiled_function_name(
+        'foo', foo))
+    self.assertEqual(('tf__foo', True), namer.compiled_function_name(
+        'foo', foo))
+
+  def test_compiled_function_name_avoids_global_conflicts(self):
+    def foo():
+      pass
+
+    namer = naming.Namer({'tf__foo': 1}, True, None, ())
+    self.assertEqual(('tf__foo_1', True),
+                     namer.compiled_function_name('foo', foo))
+
+  def test_new_symbol_tracks_names(self):
+    namer = naming.Namer({}, True, None, ())
+    self.assertEqual('temp', namer.new_symbol('temp', set()))
+    self.assertItemsEqual(('temp',), namer.generated_names)
+
+  def test_new_symbol_avoids_duplicates(self):
+    namer = naming.Namer({}, True, None, ())
+    self.assertEqual('temp', namer.new_symbol('temp', set()))
+    self.assertEqual('temp_1', namer.new_symbol('temp', set()))
+    self.assertItemsEqual(('temp', 'temp_1'), namer.generated_names)
+
+  def test_new_symbol_avoids_conflicts(self):
+    namer = naming.Namer({'temp': 1}, True, None, ())
+    # temp is reserved in the global namespace
+    self.assertEqual('temp_1', namer.new_symbol('temp', set()))
+    # temp_2 is reserved in the local namespace
+    self.assertEqual('temp_3', namer.new_symbol('temp', set(('temp_2',))))
+    self.assertItemsEqual(('temp_1', 'temp_3'), namer.generated_names)
+
+
+if __name__ == '__main__':
+  test.main()