| # |
| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You 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. |
| # |
| |
| import logging |
| import unittest |
| |
| import apache_beam as beam |
| from apache_beam.runners.trivial_runner import TrivialRunner |
| from apache_beam.testing.util import assert_that |
| from apache_beam.testing.util import equal_to |
| |
| |
| class TrivialRunnerTest(unittest.TestCase): |
| def test_trivial(self): |
| # The most trivial pipeline, to ensure at least something is working. |
| # (Notably avoids the non-trivial complexity within assert_that.) |
| with beam.Pipeline(runner=TrivialRunner()) as p: |
| _ = p | beam.Impulse() |
| |
| def test_assert_that(self): |
| # If this fails, the other tests may be vacuous. |
| with self.assertRaisesRegex(Exception, 'Failed assert'): |
| with beam.Pipeline(runner=TrivialRunner()) as p: |
| assert_that(p | beam.Impulse(), equal_to(['a'])) |
| |
| def test_impulse(self): |
| with beam.Pipeline(runner=TrivialRunner()) as p: |
| assert_that(p | beam.Impulse(), equal_to([b''])) |
| |
| def test_create(self): |
| with beam.Pipeline(runner=TrivialRunner()) as p: |
| assert_that(p | beam.Create(['a', 'b']), equal_to(['a', 'b'])) |
| |
| def test_flatten(self): |
| with beam.Pipeline(runner=TrivialRunner()) as p: |
| # Disabling reshuffle here (and elsewhere) just to give a simpler graph |
| # for debugging. |
| ab = p | 'AB' >> beam.Create(['a', 'b'], reshuffle=False) |
| c = p | 'C' >> beam.Create(['c'], reshuffle=False) |
| assert_that((ab, c, c) | beam.Flatten(), equal_to(['a', 'b', 'c', 'c'])) |
| |
| def test_map(self): |
| with beam.Pipeline(runner=TrivialRunner()) as p: |
| assert_that( |
| p | beam.Create(['a', 'b'], reshuffle=False) | beam.Map(str.upper), |
| equal_to(['A', 'B'])) |
| |
| def test_gbk(self): |
| with beam.Pipeline(runner=TrivialRunner()) as p: |
| result = ( |
| p |
| | beam.Create([('a', 1), ('b', 2), ('b', 3)], reshuffle=False) |
| | beam.GroupByKey() |
| | beam.MapTuple(lambda k, vs: (k, sorted(vs)))) |
| assert_that(result, equal_to([('a', [1]), ('b', [2, 3])])) |
| |
| |
| if __name__ == '__main__': |
| logging.getLogger().setLevel(logging.INFO) |
| unittest.main() |