scripts/sqlc-unused counts a call from a package covered by a ".*" entry of
scripts/deadcode-testonly.txt as a test use, so one list defines the
test-support packages for both checks, and the list's header says so. A query
that only the kit's builders call now reads TEST-ONLY, not used. The check
reads the module in a directory it is given, which lets a test run it over a
fixture module.
New tests: TestScanCountsATestSupportPackageAsTestUse, over a fixture module
whose kit package and app package each call one query, and
TestReadSupportTakesTheWholePackageEntries. The other tests, TestCheck and
TestReadAllow, are unchanged. The output of go run ./scripts/sqlc-unused
equals the baseline taken before step 2 once each line's count of test
references is stripped. 2 breaks, each failed the new tests; they have no old
side.
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