1 # Copyright 2018 The TensorFlow Authors. All Rights Reserved. 2 # 3 # Licensed under the Apache License, Version 2.0 (the "License"); 4 # you may not use this file except in compliance with the License. 5 # You may obtain a copy of the License at 6 # 7 # http://www.apache.org/licenses/LICENSE-2.0 8 # 9 # Unless required by applicable law or agreed to in writing, software 10 # distributed under the License is distributed on an "AS IS" BASIS, 11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 # See the License for the specific language governing permissions and 13 # limitations under the License. 14 # ============================================================================== 15 """Coder operations tests.""" 16 17 from __future__ import absolute_import 18 from __future__ import division 19 from __future__ import print_function 20 21 from tensorflow.contrib.coder.python.ops import coder_ops 22 from tensorflow.python.framework import dtypes 23 from tensorflow.python.ops import array_ops 24 from tensorflow.python.ops import math_ops 25 from tensorflow.python.ops import random_ops 26 from tensorflow.python.platform import test 27 28 29 class CoderOpsTest(test.TestCase): 30 """Coder ops test. 31 32 Coder ops have C++ tests. Python test just ensures that Python binding is not 33 broken. 34 """ 35 36 def testReadmeExample(self): 37 data = random_ops.random_uniform((128, 128), 0, 10, dtype=dtypes.int32) 38 histogram = math_ops.bincount(data, minlength=10, maxlength=10) 39 cdf = math_ops.cumsum(histogram, exclusive=False) 40 cdf = array_ops.pad(cdf, [[1, 0]]) 41 cdf = array_ops.reshape(cdf, [1, 1, -1]) 42 43 data = math_ops.cast(data, dtypes.int16) 44 encoded = coder_ops.range_encode(data, cdf, precision=14) 45 decoded = coder_ops.range_decode( 46 encoded, array_ops.shape(data), cdf, precision=14) 47 48 with self.test_session() as sess: 49 self.assertAllEqual(*sess.run((data, decoded))) 50 51 52 if __name__ == '__main__': 53 test.main() 54
