test(agent_transfer): add regression tests for non-LlmAgent peer transfers#6210
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…sfers Regression tests for google#5863. Before the hasattr guard was added to _get_transfer_targets, placing any agent without a 'mode' attribute (LoopAgent, SequentialAgent, ParallelAgent) alongside an LlmAgent in a parent's sub_agents raised: AttributeError: '<AgentType>' object has no attribute 'mode' Five tests are added: - LoopAgent as a peer agent does not raise - LoopAgent as a sub-agent does not raise - SequentialAgent as a peer agent does not raise - ParallelAgent as a peer agent does not raise - LlmAgent with mode='single_turn' is correctly excluded from targets
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Closes #5863
Adds regression tests for the
AttributeErrorthat occurred when_get_transfer_targetsiterated over peer agents without amodeattribute (e.g.LoopAgent,SequentialAgent,ParallelAgent).The core fix — the
hasattrguard in_get_transfer_targets— is already inmain. These tests ensure the behaviour does not regress. As noted in #5910, the tests were not yet inmain, so this is a test-only PR with no production code changes.Five tests added to
test_get_transfer_targets.py:LoopAgentas a peer agent does not raiseAttributeErrorLoopAgentas a sub-agent does not raiseAttributeErrorSequentialAgentas a peer agent does not raiseAttributeErrorParallelAgentas a peer agent does not raiseAttributeErrorLlmAgentwithmode='single_turn'is correctly excluded from transfer targets (verifies the filtering logic, not just the guard)All five use
MockModeland real ADK agent objects — no external dependencies or mocking of internals.