IETS007: custom_tool_tests

Every @tool function name appears somewhere in the tests.

Category: tests · Applies to: eval, helper

What it does

Finds functions decorated with @tool in the package and checks each name appears in a test file. For an evaluation the search covers tests/<name>/; for a helper package, the whole tests root, because shared components are usually tested next to the evaluation that motivated them. One diagnostic per untested function. This is a presence check, not a quality check.

Why is this bad?

A custom tool is the evaluation's own logic, the part no upstream test covers. One test that at least constructs it catches import errors and signature changes.

Suppress on a line with # inspect-evals-lint: ignore[IETS007] or ignore[custom_tool_tests]; select or ignore it in configuration by either, or by the prefix IETS.