88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
# Copyright 2020 The TensorFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ==============================================================================
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"""Tests for case statements in XLA."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from tensorflow.compiler.tests import xla_test
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from tensorflow.python.eager import def_function
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from tensorflow.python.framework import ops
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from tensorflow.python.ops import array_ops
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from tensorflow.python.ops import control_flow_ops
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from tensorflow.python.ops import image_ops
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from tensorflow.python.ops import io_ops
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from tensorflow.python.platform import test
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class CaseTest(xla_test.XLATestCase):
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def testCaseBasic(self):
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@def_function.function(experimental_compile=True)
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def switch_case_test(branch_index):
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def f1():
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return array_ops.constant(17)
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def f2():
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return array_ops.constant(31)
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def f3():
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return array_ops.constant(-1)
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return control_flow_ops.switch_case(
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branch_index, branch_fns={
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0: f1,
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1: f2
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}, default=f3)
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with ops.device(self.device):
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self.assertEqual(switch_case_test(array_ops.constant(0)).numpy(), 17)
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self.assertEqual(switch_case_test(array_ops.constant(1)).numpy(), 31)
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self.assertEqual(switch_case_test(array_ops.constant(2)).numpy(), -1)
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self.assertEqual(switch_case_test(array_ops.constant(3)).numpy(), -1)
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def testBranchIsPruned(self):
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@def_function.function(experimental_compile=True)
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def switch_case_test():
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branch_index = array_ops.constant(0)
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def f1():
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return array_ops.constant(17)
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def f2():
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# Some operations that XLA cannot compile.
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image_ops.decode_image(io_ops.read_file('/tmp/bmp'))
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return array_ops.constant(31)
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# This tests that we do not try to compile all branches if the branch
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# index in trivially constant.
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return control_flow_ops.switch_case(
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branch_index, branch_fns={
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0: f1,
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1: f2
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}, default=f2)
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with ops.device(self.device):
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self.assertEqual(switch_case_test().numpy(), 17)
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if __name__ == '__main__':
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ops.enable_eager_execution()
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test.main()
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