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

# coding=utf-8
#
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# 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
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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 flatmap


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


def check_valid_plants(actual):
  # [START valid_plants]
  valid_plants = [
      {'icon': '🍓', 'name': 'Strawberry', 'duration': 'perennial'},
      {'icon': '🥕', 'name': 'Carrot', 'duration': 'biennial'},
      {'icon': '🍆', 'name': 'Eggplant', 'duration': 'perennial'},
      {'icon': '🍅', 'name': 'Tomato', 'duration': 'annual'},
  ]
  # [END valid_plants]
  assert_that(actual, equal_to(valid_plants))


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

  def test_flatmap_function(self):
    flatmap.flatmap_function(check_plants)

  def test_flatmap_lambda(self):
    flatmap.flatmap_lambda(check_plants)

  def test_flatmap_generator(self):
    flatmap.flatmap_generator(check_plants)

  def test_flatmap_multiple_arguments(self):
    flatmap.flatmap_multiple_arguments(check_plants)

  def test_flatmap_tuple(self):
    flatmap.flatmap_tuple(check_plants)

  def test_flatmap_side_inputs_singleton(self):
    flatmap.flatmap_side_inputs_singleton(check_plants)

  def test_flatmap_side_inputs_iter(self):
    flatmap.flatmap_side_inputs_iter(check_valid_plants)

  def test_flatmap_side_inputs_dict(self):
    flatmap.flatmap_side_inputs_dict(check_valid_plants)


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