)

func main() {}
-- foo_test.go --
package main

import "testing"

func TestFoo(t *testing.T) {}
-- foo_separate_test.go --
package main_test

import "testing"

func TestSeparateFoo(t *testing.T) {}
-- withcgo/withcgo.go --
package withcgo

// int fortytwo()
// {
//     return 42;
// }
import "C"
-- withcgo/stub.go --
package withcgo