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https://issues.apache.org/jira/browse/BEAM-8575?focusedWorklogId=360546&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-360546
]
ASF GitHub Bot logged work on BEAM-8575:
----------------------------------------
Author: ASF GitHub Bot
Created on: 16/Dec/19 22:47
Start Date: 16/Dec/19 22:47
Worklog Time Spent: 10m
Work Description: robertwb commented on pull request #10159: [BEAM-8575]
Added a unit test to CombineTest class to test that Combi…
URL: https://github.com/apache/beam/pull/10159#discussion_r358506547
##########
File path: sdks/python/apache_beam/transforms/combiners_test.py
##########
@@ -399,6 +418,43 @@ def test_global_fanout(self):
| beam.CombineGlobally(combine.MeanCombineFn()).with_fanout(11))
assert_that(result, equal_to([49.5]))
+ def test_combining_with_accumulation_mode(self):
+ # PCollection will contain elements from 1 to 5.
+ elements = [i for i in range(1, 6)]
+
+ ts = TestStream().advance_watermark_to(0)
+ for i in elements:
+ ts.add_elements([i])
+ ts.advance_watermark_to_infinity()
+
+ options = PipelineOptions()
+ options.view_as(StandardOptions).streaming = True
+ with TestPipeline(options=options) as p:
+ result = (p
+ | ts
+ | beam.WindowInto(
+ GlobalWindows(),
+ accumulation_mode=trigger.AccumulationMode.ACCUMULATING,
+ trigger=AfterWatermark(early=AfterAll(AfterCount(1)))
+ )
+ | beam.CombineGlobally(sum).without_defaults().with_fanout(2)
+ | beam.ParDo(self.record_dofn()))
+
+ # The trigger should fire repeatedly for each newly added element,
+ # and at least once for advancing the watermark to infinity.
+ # The firings should accumulate the output.
+ # First firing: 1 = 1
+ # Second firing: 3 = 1 + 2
+ # Third firing: 6 = 1 + 2 + 3
+ # Fourth firing: 10 = 1 + 2 + 3 + 4
+ # Fifth firing: 15 = 1 + 2 + 3 + 4 + 5
+ # Next firings: 15 = 15 + 0 (advancing the watermark to infinity)
+ # The exact number of firings may vary,
Review comment:
Please change this to expect the one correct answer.
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Issue Time Tracking
-------------------
Worklog Id: (was: 360546)
Time Spent: 36h 10m (was: 36h)
> Add more Python validates runner tests
> --------------------------------------
>
> Key: BEAM-8575
> URL: https://issues.apache.org/jira/browse/BEAM-8575
> Project: Beam
> Issue Type: Test
> Components: sdk-py-core, testing
> Reporter: wendy liu
> Assignee: wendy liu
> Priority: Major
> Time Spent: 36h 10m
> Remaining Estimate: 0h
>
> This is the umbrella issue to track the work of adding more Python tests to
> improve test coverage.
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