Test-only directory causes error "no non-test Go files in..."

[sgielen]

I have a directory containing only go testing files, for integration tests. I.e.:

src/
  foo/
    impl.go        # for implementation
    impl_test.go   # for unit tests
    test/
      impl_test.go # for integration tests

When I run go build ./... in the root, this succeeds without warning (this is supported since this go commit). However, the default go-build precommit doesn't like it:

go-build.................................................................Failed
- hook id: go-build
- exit code: 1

go build mytest/foo/test: no non-test Go files in /.../repo/src/foo/test