package main

import (
	"net/http"
	"testing"
)

// TestMuxPatternRegistered 已注册/未注册两分支。
func TestMuxPatternRegistered(t *testing.T) {
	mux := http.NewServeMux()
	if h := muxPatternRegistered(mux, "/healthz"); h != nil {
		t.Fatalf("未注册时应返回 nil，实得 %v", h)
	}
	mux.HandleFunc("/healthz", func(http.ResponseWriter, *http.Request) {})
	if h := muxPatternRegistered(mux, "/healthz"); h == nil {
		t.Fatal("已注册时应返回非 nil")
	}
	// 方法限定 pattern（scheduler 形态 "GET /healthz"）也应被识别。
	m2 := http.NewServeMux()
	m2.HandleFunc("GET /healthz", func(http.ResponseWriter, *http.Request) {})
	if h := muxPatternRegistered(m2, "/healthz"); h == nil {
		t.Fatal("GET /healthz 方法限定 pattern 应识别为已注册")
	}
}