Go Coverage不包括其他软件包中的功能

Question

I have a project like this:

app/
    api/
        foo.go
        test_foo.go
src/
    db/
        bar.go

In foo.go, a call is made to a function in bar.go. However, when running the coverage report, it shows that 0 lines of bar.go are covered.

Is there a way to get coverage to include function call to other packages?

In my case, I do not want to make separate tests for db and for api, since all calls through db will always go through api, and it would be redundant to write two tests.

I'm running the coverage like this:

go clean -testcache
go test -coverprofile=coverage.out ./...
go tool cover -html=coverage.out

Answer 1

You need to include the coverpkg flag so:

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

Would calculate the coverage on all of your packages.

https://golang.org/cmd/go/#hdr-Testing_flags