robertwb commented on code in PR #26771:
URL: https://github.com/apache/beam/pull/26771#discussion_r1198403538
##########
sdks/python/apache_beam/yaml/yaml_transform_test.py:
##########
@@ -280,6 +280,50 @@ def test_windowing_on_outer(self):
providers=TEST_PROVIDERS)
assert_that(result, equal_to([6, 9]))
+ def test_name_is_not_ambiguous(self):
+ with beam.Pipeline(options=beam.options.pipeline_options.PipelineOptions(
+ pickle_library='cloudpickle')) as p:
+
+ result = p | YamlTransform(
+ '''
+ type: composite
+ transforms:
+ - type: Create
+ name: Create
+ elements: [0, 1, 3, 4]
+ - type: PyFilter
+ name: Filter
+ keep: "lambda elem: elem > 2"
+ input: Create
+ output: Filter
+ ''')
+ # No exception raised
+ assert_that(result, equal_to([3, 4]))
+
+ def test_name_is_ambiguous(self):
+ with beam.Pipeline(options=beam.options.pipeline_options.PipelineOptions(
+ pickle_library='cloudpickle')) as p:
+
+ with self.assertRaises(ValueError):
+ result = p | YamlTransform(
+ '''
+ type: composite
+ transforms:
+ - type: Create
+ name: CreateData
+ elements: [0, 1, 3, 4]
+ - type: PyFilter
+ name: PyFilter
+ keep: "lambda elem: elem > 2"
+ input: CreateData
+ - type: PyFilter
+ name: AnotherFilter
+ keep: "lambda elem: elem > 3"
+ input: PyFilter
Review Comment:
I'm fine with this being an error--it's still a bit ambiguous and if we
really want to change our minds later we can (but not the other way around).
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