github.com/apache/beam/sdks/v2@v2.48.2/python/apache_beam/examples/complete/estimate_pi_it_test.py (about)

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     3  # contributor license agreements.  See the NOTICE file distributed with
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    14  # See the License for the specific language governing permissions and
    15  # limitations under the License.
    16  #
    17  
    18  """End-to-end test for Estimate Pi example."""
    19  # pytype: skip-file
    20  
    21  import json
    22  import logging
    23  import unittest
    24  import uuid
    25  
    26  import pytest
    27  
    28  from apache_beam.examples.complete import estimate_pi
    29  from apache_beam.testing.test_pipeline import TestPipeline
    30  from apache_beam.testing.test_utils import read_files_from_pattern
    31  
    32  
    33  class EstimatePiIT(unittest.TestCase):
    34    @pytest.mark.no_xdist
    35    @pytest.mark.examples_postcommit
    36    def test_estimate_pi_output_file(self):
    37      test_pipeline = TestPipeline(is_integration_test=True)
    38      OUTPUT_FILE = \
    39          'gs://temp-storage-for-end-to-end-tests/py-it-cloud/output'
    40      output = '/'.join([OUTPUT_FILE, str(uuid.uuid4()), 'result'])
    41      extra_opts = {'output': output}
    42      estimate_pi.run(test_pipeline.get_full_options_as_args(**extra_opts))
    43      # Load result file and compare.
    44      result = read_files_from_pattern('%s*' % output)
    45      [_, _, estimated_pi] = json.loads(result.strip())
    46      # Note: Probabilistically speaking this test can fail with a probability
    47      # that is very small (VERY) given that we run at least 100 thousand
    48      # trials.
    49      self.assertTrue(3.125 <= estimated_pi <= 3.155)
    50  
    51  
    52  if __name__ == '__main__':
    53    logging.getLogger().setLevel(logging.INFO)
    54    unittest.main()