Source code for apache_beam.typehints.trivial_inference_test_py3

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"""Tests for apache_beam.typehints.trivial_inference that use Python 3 syntax.
"""

# pytype: skip-file

from __future__ import absolute_import

import unittest

from apache_beam.typehints import trivial_inference
from apache_beam.typehints import typehints


[docs]class TrivialInferenceTest(unittest.TestCase):
[docs] def assertReturnType(self, expected, f, inputs=(), depth=5): self.assertEqual( expected, trivial_inference.infer_return_type(f, inputs, debug=True, depth=depth))
[docs] def testBuildListUnpack(self): # Lambda uses BUILD_LIST_UNPACK opcode in Python 3. self.assertReturnType( typehints.List[int], lambda _list: [*_list, *_list, *_list], [typehints.List[int]])
[docs] def testBuildTupleUnpack(self): # Lambda uses BUILD_TUPLE_UNPACK opcode in Python 3. # yapf: disable self.assertReturnType( typehints.Tuple[int, str, str], lambda _list1, _list2: (*_list1, *_list2, *_list2), [typehints.List[int], typehints.List[str]])
# yapf: enable if __name__ == '__main__': unittest.main()