got := fmt.Sprintf("%#v", gotH)
		if got != test.wantHandler {
			t.Errorf("%s %q: got %q, want %q", test.method, test.path, got, test.wantHandler)
		}
	}
}

func TestEmptyServeMux(t *testing.T) {
	// Verify that a ServeMux with nothing registered
	// doesn't panic.
	mux := NewServeMux()
	var r Request
	r.Method = "GET"
	r.Host = "example.com"
	r.URL = &url.URL{Path: "/"}