Route.Find match error

[SuperGod]

func TestAPIMatchAll(t *testing.T) {
	domain1 := "baidu.com"
	params := make(map[string][]byte, 0)
	paramsFunc := func(name, value []byte) {
		params[string(name)] = value
	}
	var id uint64
	r := NewRoute()

	r.Add(&metapb.API{
		ID:         1,
		MatchRule:  metapb.MatchAll,
		URLPattern: "/a/b/c",
		Method:     "POST",
		Domain:     domain1,
	})

	id, ret := r.Find([]byte("/a/b/d/c"), "POST", paramsFunc)
	if !ret {
		t.Fatal(ret)
		return
	}
	if id != 1 {
		t.Errorf("expect matched 1, but %d", id)
	}
}

我理解的这个go test应该会失败，但是这个test pass了，所以这是一个bug，还是一个feature?