How Can I Exclude Generated Files from Go Test Coverage Reports?

Ignoring Generated Files in Go Test Coverage

In testing code coverage with Go's go test -coverprofile command, one may encounter the inclusion of generated files in coverage calculations. This can be problematic when generated files contain content that should not be considered in coverage measurement.

To address this issue, one approach is to strip the generated code from the cover profiles. This can be achieved through the following steps:

1. Execute go test . -coverprofile cover.out.tmp to generate the initial coverage profile.
2. Filter out generated files by running cat cover.out.tmp | grep -v "_generated.go" > cover.out.
3. Utilize tool cover -func cover.out to display the coverage report with the generated files excluded.

By implementing this process, generated files can be effectively ignored in coverage calculations, providing a more accurate representation of the actual coverage of the target code.

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