Files
turnstone/tests
Patrick Buckley de4b3b3909 fix: synthesize tool_results for orphaned tool_use blocks on Anthropic (#219)
When a cancel interrupts tool execution, the assistant message with
tool_use blocks is saved to DB before tools run, but
GenerationCancelled prevents tool results from being created. The
in-memory rollback removes the orphaned message, but the DB row
persists. On resume, Anthropic rejects the conversation with
"tool_use ids were found without tool_result blocks".

Fix: _convert_messages now peeks ahead after each assistant message
with tool_use blocks. If any tool_use IDs lack matching tool_result
messages, synthetic error results are injected (is_error: true,
"Tool execution was cancelled."). Transparent to all callers,
provider-specific (OpenAI is lenient about this).

5 new tests covering: single orphan, multiple orphans, partial
results, complete results (no synthesis), and trailing orphan.
2026-03-29 05:54:19 -07:00
..