sdks/python/apache_beam/examples/cookbook/coders_test.py

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#    http://www.apache.org/licenses/LICENSE-2.0
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"""Test for the coders example."""

from __future__ import absolute_import

import logging
import unittest

import apache_beam as beam
from apache_beam.examples.cookbook import coders
from apache_beam.testing.test_pipeline import TestPipeline
from apache_beam.testing.util import assert_that
from apache_beam.testing.util import equal_to


class CodersTest(unittest.TestCase):

  SAMPLE_RECORDS = [
      {'host': ['Germany', 1], 'guest': ['Italy', 0]},
      {'host': ['Germany', 1], 'guest': ['Brasil', 3]},
      {'host': ['Brasil', 1], 'guest': ['Italy', 0]}]

  def test_compute_points(self):
    with TestPipeline() as p:
      records = p | 'create' >> beam.Create(self.SAMPLE_RECORDS)
      result = (records
                | 'points' >> beam.FlatMap(coders.compute_points)
                | beam.CombinePerKey(sum))
      assert_that(result,
                  equal_to([('Italy', 0), ('Brasil', 6), ('Germany', 3)]))


if __name__ == '__main__':
  logging.getLogger().setLevel(logging.INFO)
  unittest.main()