[I] test(amber-python): add unit tests for Udon Python UDF debugger [texera]

["Yicong-Huang (via GitHub)" <gi...@apache.org>]

Yicong-Huang opened a new issue, #4509:
URL: https://github.com/apache/texera/issues/4509

   ## Task Summary
   
   The Python-side runtime of the Udon UDF debugger has **zero unit-test coverage**:
   
   - `core/architecture/managers/debug_manager.py` — wraps `pdb.Pdb` with `SingleBlockingIO` pipes
   - `core/architecture/handlers/control/debug_command_handler.py` — RPC handler that translates frontend debug commands and forwards them to the debugger
   
   Peer managers in the same directory (`pause_manager`, `state_manager`, `executor_manager`) all have `test_*.py` files; debug_manager is the odd one out.
   
   The frontend covers the UI layer (`udf-debug.service.spec.ts`, `code-debugger.component.spec.ts`), but the actual pdb wiring on the worker side is untested.
   
   ## Proposed Action
   
   Add `test_debug_manager.py` and `test_debug_command_handler.py` next to the production files, following the existing pytest pattern used by `test_pause_manager.py` etc. Cover at minimum:
   
   - `DebugManager`: command put/has roundtrip, event has/get, blocking read returns flushed line, prompt is empty.
   - `WorkerDebugCommandHandler.translate_debug_command`: `b`/`break` prepends module name to lineno arg, other commands pass through, condition arg is preserved, whitespace is normalized.
   
   ## Priority
   
   P3 – Low (test-coverage gap)
   
   ## Task Type
   
   - [x] Testing / QA


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Re: [I] test(amber-python): add unit tests for Udon Python UDF debugger [texera]

["Yicong-Huang (via GitHub)" <gi...@apache.org>]

Yicong-Huang closed issue #4509: test(amber-python): add unit tests for Udon Python UDF debugger
URL: https://github.com/apache/texera/issues/4509


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