test: cover top high-fanin untested helpers (84 Python + 13 Node tests)#3
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May 30, 2026
FastAPI Pydantic request-body models were being flagged dead because the only reference to them came through a handler's parameter type annotation, which the Python parser didn't trace. The parser now walks each function's parameter `type` strings and the return-type string, regex-extracts capitalized identifiers, drops typing-scaffolding (`Optional`, `Annotated`, `Union`, ...) and FastAPI dependency markers (`Body`, `Depends`, ...), and emits one `CALLS` edge with `dst="unresolved::<TypeName>"` and `metadata.via == "annotation"` per surviving name. The existing resolver rewrites these to real `CLASS` ids when the type is in-repo, which closes the loop for dead-code detection. Framework-agnostic: every function with type annotations benefits, not just route handlers. The change reuses `EdgeKind.CALLS` (rather than introducing a new `REFERENCES` kind) because `CALLS` already flows through the resolver and the reference-kind whitelist used by dead-code, and Pydantic-body validation IS effectively a runtime call into the model class. v0.1.2 backlog item #3.
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Summary
Direct unit tests for ~16 high-fanin helpers across viz/_style, roles, parsers/typescript, mcp_server, embed/store, viz/diagrams, viz/hld, plus JS helpers.
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