sdks/python/apache_beam/examples/snippets/transforms/elementwise/kvswap_test.py

# coding=utf-8
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# The ASF licenses this file to You under the Apache License, Version 2.0
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#    http://www.apache.org/licenses/LICENSE-2.0
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from __future__ import absolute_import
from __future__ import print_function

import unittest

import mock

from apache_beam.testing.test_pipeline import TestPipeline
from apache_beam.testing.util import assert_that
from apache_beam.testing.util import equal_to

from . import kvswap


def check_plants(actual):
  # [START plants]
  plants = [
      ('Strawberry', '🍓'),
      ('Carrot', '🥕'),
      ('Eggplant', '🍆'),
      ('Tomato', '🍅'),
      ('Potato', '🥔'),
  ]
  # [END plants]
  assert_that(actual, equal_to(plants))


@mock.patch('apache_beam.Pipeline', TestPipeline)
# pylint: disable=line-too-long
@mock.patch('apache_beam.examples.snippets.transforms.elementwise.kvswap.print', lambda elem: elem)
# pylint: enable=line-too-long
class KvSwapTest(unittest.TestCase):
  def test_kvswap(self):
    kvswap.kvswap(check_plants)


if __name__ == '__main__':
  unittest.main()