bigquery_tornadoes_test.py

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"""Test for the BigQuery tornadoes example."""

import logging
import unittest

import apache_beam as beam
from apache_beam.examples.cookbook import bigquery_tornadoes
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 BigQueryTornadoesTest(unittest.TestCase):

  def test_basics(self):
    with TestPipeline() as p:
      rows = (p | 'create' >> beam.Create([
          {'month': 1, 'day': 1, 'tornado': False},
          {'month': 1, 'day': 2, 'tornado': True},
          {'month': 1, 'day': 3, 'tornado': True},
          {'month': 2, 'day': 1, 'tornado': True}]))
      results = bigquery_tornadoes.count_tornadoes(rows)
      assert_that(results, equal_to([{'month': 1, 'tornado_count': 2},
                                     {'month': 2, 'tornado_count': 1}]))


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