1  package eg
 2  import "testing"
 3
 4  func TestExample(t *testing.T) {
 5    e := NewExample()
 6      // Don't do this!
 7    _ = e.(*concreteType)
 8    if e.Name() != "Concrete type" {
 9      t.Fail()
10    }
11    t.Errorf("This test is buggy")
12  }