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67 lines
2.5 KiB
67 lines
2.5 KiB
# Copyright (c) 2018 PaddlePaddle 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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from __future__ import print_function
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import unittest
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import paddle.fluid.core as core
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import paddle.fluid.layers as layers
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import paddle.fluid.framework as framework
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from paddle.fluid.executor import Executor
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from paddle.fluid.framework import default_startup_program
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class TestSwitch(unittest.TestCase):
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def check_switch(self, value):
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x = layers.fill_constant(shape=[1], dtype='float32', value=value)
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zero_var = layers.fill_constant(shape=[1], dtype='float32', value=0.0)
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one_var = layers.fill_constant(shape=[1], dtype='float32', value=1.0)
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two_var = layers.fill_constant(shape=[1], dtype='float32', value=2.0)
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three_var = layers.fill_constant(shape=[1], dtype='float32', value=3.0)
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result = layers.create_global_var(
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shape=[1], value=-1.0, dtype='float32', persistable=True)
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with layers.Switch() as switch:
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with switch.case(layers.less_than(x, zero_var)):
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layers.assign(zero_var, result)
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with switch.case(layers.less_than(x, one_var)):
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layers.assign(one_var, result)
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with switch.case(layers.less_than(x, two_var)):
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layers.assign(two_var, result)
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with switch.default():
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layers.assign(three_var, result)
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cpu = core.CPUPlace()
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exe = Executor(cpu)
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exe.run(default_startup_program())
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out = exe.run(feed={}, fetch_list=[result])[0][0]
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return out
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def test_switch(self):
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test_data = {(-0.1, 0), (0.1, 1), (1.1, 2), (2.1, 3)}
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for x, expected_result in test_data:
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main_program = framework.Program()
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startup_program = framework.Program()
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with framework.program_guard(main_program, startup_program):
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result = self.check_switch(x)
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self.assertEqual(result, expected_result)
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if __name__ == '__main__':
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unittest.main()
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