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# 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
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#    http://www.apache.org/licenses/LICENSE-2.0
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"""Unit tests for the transform.external classes."""

from __future__ import absolute_import

import typing
import unittest

import apache_beam as beam
from apache_beam import typehints
from apache_beam.portability.api.external_transforms_pb2 import ExternalConfigurationPayload
from apache_beam.transforms.external import AnnotationBasedPayloadBuilder
from apache_beam.transforms.external_test import PayloadBase


def get_payload(cls):
  payload = ExternalConfigurationPayload()
  payload.ParseFromString(cls._payload)
  return payload


class ExternalAnnotationPayloadTest(PayloadBase, unittest.TestCase):

  def get_payload_from_typing_hints(self, values):
    class AnnotatedTransform(beam.ExternalTransform):
      URN = 'beam:external:fakeurn:v1'

      def __init__(self,
                   integer_example: int,
                   string_example: str,
                   list_of_strings: typing.List[str],
                   optional_kv: typing.Optional[
                       typing.Tuple[str, float]] = None,
                   optional_integer: typing.Optional[int] = None,
                   expansion_service=None):
        super(AnnotatedTransform, self).__init__(
            self.URN,
            AnnotationBasedPayloadBuilder(
                self,
                integer_example=integer_example,
                string_example=string_example,
                list_of_strings=list_of_strings,
                optional_kv=optional_kv,
                optional_integer=optional_integer,
            ),
            expansion_service
        )

    return get_payload(AnnotatedTransform(**values))

  def get_payload_from_beam_typehints(self, values):
    class AnnotatedTransform(beam.ExternalTransform):
      URN = 'beam:external:fakeurn:v1'

      def __init__(self,
                   integer_example: int,
                   string_example: str,
                   list_of_strings: typehints.List[str],
                   optional_kv: typehints.Optional[
                       typehints.KV[str, float]] = None,
                   optional_integer: typehints.Optional[int] = None,
                   expansion_service=None):
        super(AnnotatedTransform, self).__init__(
            self.URN,
            AnnotationBasedPayloadBuilder(
                self,
                integer_example=integer_example,
                string_example=string_example,
                list_of_strings=list_of_strings,
                optional_kv=optional_kv,
                optional_integer=optional_integer,
            ),
            expansion_service
        )

    return get_payload(AnnotatedTransform(**values))


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