Ren Koike created HDDS-16266:
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Summary: Add mock-based unit tests for Ratis write path
Key: HDDS-16266
URL: https://issues.apache.org/jira/browse/HDDS-16266
Project: Apache Ozone
Issue Type: Improvement
Components: Ozone Client
Reporter: Ren Koike
Assignee: Ren Koike
Extend the mock-based testing approach to the Ratis write path
({*}RatisBlockOutputStream{*} / {*}KeyOutputStream{*}).
The Ratis path is simpler to mock than *DataStream* because *XceiverClientSpi*
is abstract (not final), so a concrete *MockXceiverClientSpi* subclass works
without Mockito-inline. An existing *MockXceiverClientSpi* in
*TestBlockOutputStreamCorrectness* already proves this pattern works.
New files:
- *FakeRatisPipeline* test harness with failure injection for writeChunk,
putBlock, and watchForCommit.
- {*}TestRatisBlockOutputStreamUnit{*}.java — block-level tests covering
write+close, flush, hsync, putBlock failure, watchForCommit failure,
writeOnRetry, and data integrity.
- {*}TestKeyOutputStreamUnit{*}.java — key-level tests covering write+commit,
cross-block-boundary allocation, hsync-to-OM, container-close retry, and atomic
key size.
All tests should pass on current code — the Ratis hsync correctly propagates
exceptions.
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