[
https://issues.apache.org/jira/browse/BEAM-5878?focusedWorklogId=245398&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-245398
]
ASF GitHub Bot logged work on BEAM-5878:
----------------------------------------
Author: ASF GitHub Bot
Created on: 20/May/19 18:06
Start Date: 20/May/19 18:06
Worklog Time Spent: 10m
Work Description: tvalentyn commented on pull request #8505: [BEAM-5878]
add tests for kwonly args in python 3
URL: https://github.com/apache/beam/pull/8505#discussion_r285695694
##########
File path:
sdks/python/apache_beam/transforms/transforms_keyword_only_args_py3_test.py
##########
@@ -0,0 +1,111 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# 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
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+"""Unit tests for side inputs."""
+
+from __future__ import absolute_import
+
+import logging
+import sys
+import unittest
+
+import apache_beam as beam
+from apache_beam.testing.test_pipeline import TestPipeline
+from apache_beam.testing.util import assert_that
+from apache_beam.testing.util import equal_to
+
+
[email protected](sys.version_info[0] == 2,
+ 'Keyword-Only Arguments are not supported in python 2')
[email protected]('TODO BEAM-5878: support kwonly args in python 3')
+class KeywordOnlyArgsTests(unittest.TestCase):
+ # Enable nose tests running in parallel
+ _multiprocess_can_split_ = True
+
+ def test_side_input_keyword_only_args(self):
+ pipeline = TestPipeline()
+
+ def sort_with_side_inputs(x, *s, reverse=False):
+ for y in s:
+ yield sorted([x] + y, reverse=reverse)
+
+ pcol = pipeline | 'start' >> beam.Create([1, 2])
+ side = pipeline | 'side' >> beam.Create([3, 4]) # 2 values in side input.
+ result1 = pcol | 'compute1' >> beam.FlatMap(
+ sort_with_side_inputs,
+ beam.pvalue.AsList(side), reverse=True)
+ assert_that(result1, equal_to([[4,3,1], [4,3,2]]), label='assert1')
+
+ result2 = pcol | 'compute2' >> beam.FlatMap(
+ sort_with_side_inputs,
+ beam.pvalue.AsIter(side))
+ assert_that(result2, equal_to([[1,3,4], [2,3,4]]), label='assert2')
+
+ result3 = pcol | 'compute3' >> beam.FlatMap(
+ sort_with_side_inputs)
+ assert_that(result3, equal_to([]), label='assert3')
+
+ result4 = pcol | 'compute4' >> beam.FlatMap(
+ sort_with_side_inputs, reverse=True)
+ assert_that(result4, equal_to([]), label='assert4')
+
+ pipeline.run()
+
+ def test_combine_keyword_only_args(self):
+ pipeline = TestPipeline()
+
+ # Keyword-only arguments are not available on Python 2
+ # pylint: disable=syntax-error
Review comment:
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Issue Time Tracking
-------------------
Worklog Id: (was: 245398)
Time Spent: 3h 50m (was: 3h 40m)
> Support DoFns with Keyword-only arguments in Python 3.
> ------------------------------------------------------
>
> Key: BEAM-5878
> URL: https://issues.apache.org/jira/browse/BEAM-5878
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-core
> Reporter: Valentyn Tymofieiev
> Assignee: Juta Staes
> Priority: Minor
> Time Spent: 3h 50m
> Remaining Estimate: 0h
>
> Python 3.0 [adds a possibility|https://www.python.org/dev/peps/pep-3102/] to
> define functions with keyword-only arguments.
> Currently Beam does not handle them correctly. [~ruoyu] pointed out [one
> place|https://github.com/apache/beam/blob/a56ce43109c97c739fa08adca45528c41e3c925c/sdks/python/apache_beam/typehints/decorators.py#L118]
> in our codebase that we should fix: in Python in 3.0 inspect.getargspec()
> will fail on functions with keyword-only arguments, but a new method
> [inspect.getfullargspec()|https://docs.python.org/3/library/inspect.html#inspect.getfullargspec]
> supports them.
> There may be implications for our (best-effort) type-hints machinery.
> We should also add a Py3-only unit tests that covers DoFn's with keyword-only
> arguments once Beam Python 3 tests are in a good shape.
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