How Can I Include External Package Function Coverage in Go Test Reports?

Including Coverage for Functions in External Packages

In a Go project, coverage reports may exclude functions defined in packages other than the tested package. To address this issue when functions in an external package (db) are called from a function in the tested package (api), adjust the testing command to incorporate the coverpkg flag.

By including the following flag when running the coverage test:

-coverpkg=./...

the coverage report will extend to encompass all packages in the project. The updated command becomes:

go test -coverpkg=./... coverprofile=coverage.out ./...

This expanded command ensures that when analyzing coverage, the test also considers functions defined in external packages that are called by the tested code, providing a more comprehensive and accurate coverage report.

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