| # |
| # 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. |
| # |
| |
| """Test for the custom coders example.""" |
| |
| from __future__ import absolute_import |
| |
| import logging |
| import tempfile |
| import unittest |
| |
| from apache_beam.examples.cookbook import group_with_coder |
| from apache_beam.testing.util import open_shards |
| |
| # Patch group_with_coder.PlayerCoder.decode(). To test that the PlayerCoder was |
| # used, we do not strip the prepended 'x:' string when decoding a Player object. |
| group_with_coder.PlayerCoder.decode = lambda self, s: group_with_coder.Player(s) |
| |
| |
| class GroupWithCoderTest(unittest.TestCase): |
| |
| SAMPLE_RECORDS = [ |
| 'joe,10', 'fred,3', 'mary,7', |
| 'joe,20', 'fred,6', 'ann,5', |
| 'joe,30', 'ann,10', 'mary,1'] |
| |
| def create_temp_file(self, records): |
| with tempfile.NamedTemporaryFile(delete=False) as f: |
| for record in records: |
| f.write('%s\n' % record) |
| return f.name |
| |
| def test_basics_with_type_check(self): |
| # Run the workflow with pipeline_type_check option. This will make sure |
| # the typehints associated with all transforms will have non-default values |
| # and therefore any custom coders will be used. In our case we want to make |
| # sure the coder for the Player class will be used. |
| temp_path = self.create_temp_file(self.SAMPLE_RECORDS) |
| group_with_coder.run([ |
| '--input=%s*' % temp_path, |
| '--output=%s.result' % temp_path]) |
| # Parse result file and compare. |
| results = [] |
| with open_shards(temp_path + '.result-*-of-*') as result_file: |
| for line in result_file: |
| name, points = line.split(',') |
| results.append((name, int(points))) |
| logging.info('result: %s', results) |
| self.assertEqual( |
| sorted(results), |
| sorted([('x:ann', 15), ('x:fred', 9), ('x:joe', 60), ('x:mary', 8)])) |
| |
| def test_basics_without_type_check(self): |
| # Run the workflow without pipeline_type_check option. This will make sure |
| # the typehints associated with all transforms will have default values and |
| # therefore any custom coders will not be used. The default coder (pickler) |
| # will be used instead. |
| temp_path = self.create_temp_file(self.SAMPLE_RECORDS) |
| group_with_coder.run([ |
| '--no_pipeline_type_check', |
| '--input=%s*' % temp_path, |
| '--output=%s.result' % temp_path]) |
| # Parse result file and compare. |
| results = [] |
| with open_shards(temp_path + '.result-*-of-*') as result_file: |
| for line in result_file: |
| name, points = line.split(',') |
| results.append((name, int(points))) |
| logging.info('result: %s', results) |
| self.assertEqual( |
| sorted(results), |
| sorted([('ann', 15), ('fred', 9), ('joe', 60), ('mary', 8)])) |
| |
| |
| if __name__ == '__main__': |
| logging.getLogger().setLevel(logging.INFO) |
| unittest.main() |