Ah, thank you. Where i was going wrong was declaring `foo_test.go` to be a separate package from `foo.go`. When i write `package foo` at the head of both `foo.g

Ah, thank you. Where i was going wrong was declaring `foo_test.go` to be a separate package from `foo.go`. When i write `package foo` at the head of both `foo.go` and `foo_test.go` this works fine.