Graceful exit in case of non-existent system #42
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This PR modifies
get_system_detailsto gracefully handle the case where a system does not exist.Also fixes concurrent request failures by updating asyncio.gather usage in
_get_system_detailsto includereturn_exceptions=True. This prevents a "stack trace storm" ofhttpx.ReadErrorsthat occurred when one task failed (e.g., due to a missing system) and cancelled other in-flight requests sharing the samehttpx.AsyncClient.Besides, adds a
--test-idargument toacceptance_tests.pyto allow running individual test cases.