Chamikara Jayalath created BEAM-455:
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Summary: Implement a test harness for verifying correcness of
custom sources
Key: BEAM-455
URL: https://issues.apache.org/jira/browse/BEAM-455
Project: Beam
Issue Type: New Feature
Components: sdk-py
Reporter: Chamikara Jayalath
Assignee: Chamikara Jayalath
Verifying correctness of custom sources can be tricky, for example, due to
complex interactions patterns that can occur when performing dynamic work
rebalancing.
Having a test harness with utilities for easily testing sources will be
extremely useful for users.
The proposed test harness will be similar to the one that is already available
for Java SDK [1] but will be adjusted to match the Python custom source API.
[1]
https://github.com/apache/incubator-beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/testing/SourceTestUtils.java
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