fix: Return tool result message as part of event + expand unit test coverage #771
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Description
Fixes the wrong message being emitted as a result of a tool call.
This also expands the unit tests for the yielded event to verify actual tool calls - previous to this, the events were not being emitted because the test was bailing out due to mocked guard rails. To better test the situation, we now have a much more extensive test for the successful tool call.
This was caught as part of prep for tool streaming; while debugging this, I also realized that tools that currently return an async generator are not working correctly, as the "result" provided looks like an async-generator stringified - this behavior predates the typed event changes though and should be fixed as part of #543 :
Related Issues
#242, #543
Documentation PR
N/A
Type of Change
Bug fix
Testing
How have you tested the change? Verify that the changes do not break functionality or introduce warnings in consuming repositories: agents-docs, agents-tools, agents-cli
hatch run prepare
Checklist
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