| # |
| # 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 minimal wordcount example.""" |
| |
| # pytype: skip-file |
| |
| import collections |
| import logging |
| import re |
| import tempfile |
| import unittest |
| |
| from apache_beam.examples import wordcount_minimal |
| from apache_beam.testing.util import open_shards |
| |
| |
| class WordCountMinimalTest(unittest.TestCase): |
| """Unit test for wordcount_minimal example with direct runner.""" |
| |
| SAMPLE_TEXT = 'a b c a b a\n aa bb cc aa bb aa' |
| |
| def create_temp_file(self, contents): |
| with tempfile.NamedTemporaryFile(delete=False) as f: |
| f.write(contents.encode('utf-8')) |
| return f.name |
| |
| def test_basics(self): |
| temp_path = self.create_temp_file(self.SAMPLE_TEXT) |
| expected_words = collections.defaultdict(int) |
| for word in re.findall(r'\w+', self.SAMPLE_TEXT): |
| expected_words[word] += 1 |
| wordcount_minimal.run( |
| ['--input=%s*' % temp_path, '--output=%s.result' % temp_path], |
| save_main_session=False) |
| # Parse result file and compare. |
| results = [] |
| with open_shards(temp_path + '.result-*-of-*') as result_file: |
| for line in result_file: |
| match = re.search(r'([a-z]+): ([0-9]+)', line) |
| if match is not None: |
| results.append((match.group(1), int(match.group(2)))) |
| self.assertEqual(sorted(results), sorted(expected_words.items())) |
| |
| |
| if __name__ == '__main__': |
| logging.getLogger().setLevel(logging.INFO) |
| unittest.main() |