Yicong-Huang opened a new issue, #4663: URL: https://github.com/apache/texera/issues/4663
### Task Summary Backfill unit tests for `amber/src/main/python/core/architecture/sendsemantics/`. This is the partitioner family that routes tuples between operators (range / hash / round-robin / broadcast / single / one-to-one) and is currently the largest under-tested module in the Python codebase per the latest Codecov report. **Codecov snapshot** (commit `f59e9e5`, 2026-05-02): | file | cov | hits/lines | |---|---|---| | `range_based_shuffle_partitioner.py` | 40.8% | 20/49 | | `broad_cast_partitioner.py` | 45.5% | 20/44 | | `round_robin_partitioner.py` | 46.1% | 18/39 | | `hash_based_shuffle_partitioner.py` | 47.5% | 19/40 | | `single_blocking_io.py` (in `core/models`) | 66.7% | 36/54 | | **module total** | **56.6%** | **133/235** | 102 lines unexecuted across 6 files. Goal: bring `sendsemantics/` to ≥90% line coverage and ensure every partitioning branch is exercised. **Test ideas**: - Empty input batch routing for each partitioner - Single-partition / single-receiver edge case - Range partitioner: boundary keys, out-of-range keys, descending ranges - Hash partitioner: hash collisions, null/None keys, deterministic routing across runs - Round-robin: state continuity across multiple `add()` calls, restart behavior - Broadcast: ensure tuple is emitted to all receivers, not duplicated to same receiver - Backpressure / flush semantics if applicable to the partitioner contract - Schema mismatch / type coercion errors **Out of scope**: integration tests with the engine; end-to-end shuffle correctness tests live in `amber/`'s sbt test suite. This task is unit-test only, runs under pytest in the existing python CI job. ### Task Type - [x] Testing / QA Source: Codecov report at https://app.codecov.io/gh/apache/texera (commit `f59e9e5e686fc34cbdfb8f4976706552cac01347`). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
