50 lines
1.9 KiB
Python
Executable File
50 lines
1.9 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright 2020 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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"""Tests for general purpose tools."""
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import unittest
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from pw_presubmit import tools
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class FlattenTest(unittest.TestCase):
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"""Tests the flatten function, which flattens iterables."""
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def test_empty(self):
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self.assertEqual([], list(tools.flatten()))
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self.assertEqual([], list(tools.flatten([])))
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self.assertEqual([], list(tools.flatten([], ())))
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self.assertEqual([], list(tools.flatten([[], (), [[]]], ((), []))))
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def test_no_nesting(self):
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self.assertEqual(['a', 'bcd', 123, 45.6],
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list(tools.flatten('a', 'bcd', 123, 45.6)))
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self.assertEqual(['a', 'bcd', 123, 45.6],
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list(tools.flatten(['a', 'bcd', 123, 45.6])))
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self.assertEqual(['a', 'bcd', 123, 45.6],
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list(tools.flatten(['a', 'bcd'], [123, 45.6])))
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def test_nesting(self):
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self.assertEqual(['a', 'bcd', 123, 45.6],
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list(tools.flatten('a', ['bcd'], [123], 45.6)))
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self.assertEqual(['a', 'bcd', 123, 45.6],
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list(tools.flatten([['a', ('bcd', [123])], 45.6])))
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self.assertEqual(['a', 'bcd', 123, 45.6],
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list(tools.flatten([('a', 'bcd')],
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[[[[123]]], 45.6])))
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if __name__ == '__main__':
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unittest.main()
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