go/src/cmd/go/internal/mvs/mvs_test.go

var tests …

func Test(t *testing.T) { … }

type reqsMap …

func (r reqsMap) Max(_, v1, v2 string) string { … }

func (r reqsMap) Upgrade(m module.Version) (module.Version, error) { … }

func (r reqsMap) Previous(m module.Version) (module.Version, error) { … }

func (r reqsMap) Required(m module.Version) ([]module.Version, error) { … }