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test: strengthen MCP tool definition contract validation - #1580
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Shashankss1205 merged 1 commit intoAug 8, 2026
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Add regression tests to verify tool definitions remain consistent with MCPServer wrapper methods and declared tool names.
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Verified locally: trial-merged with #1583, #1586, #1590 and #1591 — full suite green (1153 passed, 7 skipped).
Good contract test. The bidirectional check is the valuable part: test_every_wrapper_has_a_tool_definition catches a wrapper that exists but was never declared, which is the direction that silently ships dead code. Thanks!
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Ten PRs since 0.5.6 — mostly parser correctness, all with regression tests. Parsers - Ruby nested classes no longer delete their parent; method parameters extracted at all (#1523, #1527, #1581) - C/C++ functions returning a pointer or reference are extracted, and registered in pre_scan so they resolve as call targets (#1524, #1582) - C# fields and locals parsed, restoring receiver-type inference for `var x = new T(); x.M();` (#1525, #1584) - JavaScript destructured, array and rest parameters extracted, recording the binding names rather than a placeholder (#1527, #1591) Queries and analysis - Five defects that returned wrong answers without erroring: inflated repository stats, misattributed callers, discarded graph_name, count(*) after OPTIONAL MATCH, an ignored tool argument (#1577) - Dead-code detection made correct and self-consistent, including the JS module-level false positive (#600, #1559, #1578) Indexing - add_package_to_graph on a flat module no longer indexes the whole virtualenv (#1528, #1586) - SCIP job progress no longer exceeds 100% (#1535, #1583) Docs and tests - Database Options table columns realigned (#1590) - MCP tool definition contract validation (#1580) Co-authored-by: Claude Fable 5 <[email protected]>
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Summary
This PR strengthens the MCP contract test suite by adding regression tests that verify the consistency between MCP tool definitions and their corresponding server wrapper methods.
Changes
*_toolwrapper inMCPServer.*_toolwrapper has a corresponding tool definition.namefield matches its registry key.Why
These tests help prevent regressions when introducing new MCP tools by ensuring that tool definitions and server wrapper methods remain synchronized.
Testing
All tests pass successfully.
Closes #1579