diff --git a/internal/lua/boundary_test.go b/internal/lua/boundary_test.go
new file mode 100644
index 0000000..adb99ea
--- /dev/null
+++ b/internal/lua/boundary_test.go
@@ -0,0 +1,569 @@
+// Package lua 提供边界场景测试。
+//
+// 该文件测试 Lua 模块的边界场景：
+//   - 协程创建失败处理
+//   - 定时器句柄操作
+//   - 共享字典容量上限
+//   - getVariable 所有变量类型
+//
+// 作者：xfy
+package lua
+
+import (
+	"context"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/valyala/fasthttp"
+	glua "github.com/yuin/gopher-lua"
+)
+
+// TestBoundaryCoroutineSandbox 测试协程沙箱阻止危险操作。
+func TestBoundaryCoroutineSandbox(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	// 创建协程
+	co, err := engine.NewCoroutine(nil)
+	require.NoError(t, err)
+	defer co.Close()
+
+	// 设置沙箱
+	err = co.SetupSandbox()
+	require.NoError(t, err)
+
+	// 尝试创建协程应该失败 - 使用单个脚本执行
+	err = co.Execute(`
+		local ok, err = pcall(function()
+			coroutine.create(function() end)
+		end)
+		if not ok then
+			-- 预期错误
+		else
+			error("coroutine.create should be blocked")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestBoundaryCoroutineYieldAllowed 测试协程 yield 仍然可用。
+func TestBoundaryCoroutineYieldAllowed(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	co, err := engine.NewCoroutine(nil)
+	require.NoError(t, err)
+	defer co.Close()
+
+	err = co.SetupSandbox()
+	require.NoError(t, err)
+
+	// coroutine.yield 和 coroutine.status 应该可用
+	err = co.Execute(`
+		-- coroutine.status 应该可用
+		local status = coroutine.status
+		if type(status) ~= "function" then
+			error("coroutine.status should be a function")
+		end
+		-- coroutine.yield 应该可用
+		local yield = coroutine.yield
+		if type(yield) ~= "function" then
+			error("coroutine.yield should be a function")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestBoundaryTimerHandleCancel 测试定时器句柄取消。
+func TestBoundaryTimerHandleCancel(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	timerMgr := engine.TimerManager()
+	require.NotNil(t, timerMgr)
+
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+	RegisterTimerAPI(L, timerMgr, ngx)
+
+	// 创建定时器并取消 - 使用全局函数避免闭包
+	err = L.DoString(`
+		function timer_callback()
+			-- 空回调
+		end
+		local handle, err = ngx.timer.at(10, timer_callback)
+		if not handle then
+			error("Failed to create timer: " .. tostring(err))
+		end
+
+		-- 取消定时器
+		local ok, err = handle:cancel()
+		if not ok then
+			error("Failed to cancel timer: " .. tostring(err))
+		end
+	`)
+	assert.NoError(t, err)
+
+	// 验证定时器已取消
+	assert.Equal(t, int32(0), timerMgr.ActiveCount())
+}
+
+// TestBoundaryTimerHandleDoubleCancel 测试重复取消定时器。
+func TestBoundaryTimerHandleDoubleCancel(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	timerMgr := engine.TimerManager()
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+	RegisterTimerAPI(L, timerMgr, ngx)
+
+	err = L.DoString(`
+		function timer_callback() end
+		local handle = ngx.timer.at(10, timer_callback)
+		if not handle then
+			error("Failed to create timer")
+		end
+
+		-- 第一次取消
+		local ok1 = handle:cancel()
+
+		-- 第二次取消应该失败
+		local ok2, err = handle:cancel()
+		if ok2 then
+			error("Double cancel should fail")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestBoundaryTimerRunningCount 测试定时器运行计数。
+func TestBoundaryTimerRunningCount(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	timerMgr := engine.TimerManager()
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+	RegisterTimerAPI(L, timerMgr, ngx)
+
+	// 创建多个定时器
+	err = L.DoString(`
+		local count = ngx.timer.running_count()
+		if count ~= 0 then
+			error("Initial count should be 0")
+		end
+
+		-- 创建定时器
+		local h1 = ngx.timer.at(10, function() end)
+		local h2 = ngx.timer.at(10, function() end)
+		local h3 = ngx.timer.at(10, function() end)
+
+		count = ngx.timer.running_count()
+		if count ~= 3 then
+			error("Count should be 3, got " .. tostring(count))
+		end
+
+		-- 取消一个
+		h1:cancel()
+		count = ngx.timer.running_count()
+		if count ~= 2 then
+			error("Count should be 2 after cancel, got " .. tostring(count))
+		end
+
+		-- 清理
+		h2:cancel()
+		h3:cancel()
+	`)
+	assert.NoError(t, err)
+}
+
+// TestBoundaryTimerUpvalueRejected 测试定时器拒绝闭包变量。
+func TestBoundaryTimerUpvalueRejected(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	timerMgr := engine.TimerManager()
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+	RegisterTimerAPI(L, timerMgr, ngx)
+
+	// 尝试创建捕获 upvalue 的定时器应该失败
+	err = L.DoString(`
+		local captured = "value"
+		local handle, err = ngx.timer.at(1, function()
+			print(captured) -- 捕获 upvalue
+		end)
+		if handle then
+			handle:cancel()
+			error("Timer with upvalue should be rejected")
+		end
+		if not err then
+			error("Expected error for upvalue capture")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestBoundarySharedDictCapacity 测试共享字典容量上限。
+func TestBoundarySharedDictCapacity(t *testing.T) {
+	dict := NewSharedDict("test", 3) // 只允许 3 个条目
+
+	// 添加 3 个条目
+	ok, err := dict.Set("a", "1", 0)
+	assert.True(t, ok)
+	assert.NoError(t, err)
+
+	ok, err = dict.Set("b", "2", 0)
+	assert.True(t, ok)
+	assert.NoError(t, err)
+
+	ok, err = dict.Set("c", "3", 0)
+	assert.True(t, ok)
+	assert.NoError(t, err)
+
+	// 添加第 4 个应该淘汰 LRU
+	ok, err = dict.Set("d", "4", 0)
+	assert.True(t, ok)
+	assert.NoError(t, err)
+
+	// 验证大小仍然为 3
+	assert.Equal(t, 3, dict.Size())
+
+	// "a" 应该被淘汰 - Get 返回空值
+	val, _, _ := dict.Get("a")
+	assert.Equal(t, "", val) // 不存在返回空
+
+	// "d" 应该存在
+	val, expired, _ := dict.Get("d")
+	assert.False(t, expired)
+	assert.Equal(t, "4", val)
+}
+
+// TestBoundarySharedDictIncrNonNumeric 测试非数值自增。
+func TestBoundarySharedDictIncrNonNumeric(t *testing.T) {
+	dict := NewSharedDict("test", 10)
+
+	// 设置非数值字符串
+	ok, _ := dict.Set("key", "not-a-number", 0)
+	assert.True(t, ok)
+
+	// 尝试自增应该失败
+	_, err := dict.Incr("key", 1)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "not a number")
+}
+
+// TestBoundarySharedDictIncrNegative 测试负数自增。
+func TestBoundarySharedDictIncrNegative(t *testing.T) {
+	dict := NewSharedDict("test", 10)
+
+	// 设置初始值
+	ok, _ := dict.Set("counter", "10", 0)
+	assert.True(t, ok)
+
+	// 负数自增
+	val, err := dict.Incr("counter", -3)
+	assert.NoError(t, err)
+	assert.Equal(t, 7, val)
+
+	// 再次负数自增到负数
+	val, err = dict.Incr("counter", -20)
+	assert.NoError(t, err)
+	assert.Equal(t, -13, val)
+}
+
+// TestBoundarySharedDictTTLExpiration 测试 TTL 过期。
+func TestBoundarySharedDictTTLExpiration(t *testing.T) {
+	dict := NewSharedDict("test", 10)
+
+	// 设置短 TTL
+	ok, _ := dict.Set("ephemeral", "value", 100*time.Millisecond)
+	assert.True(t, ok)
+
+	// 立即读取应该存在
+	val, expired, _ := dict.Get("ephemeral")
+	assert.False(t, expired)
+	assert.Equal(t, "value", val)
+
+	// 等待过期
+	time.Sleep(150 * time.Millisecond)
+
+	// 再次读取应该过期
+	val, expired, _ = dict.Get("ephemeral")
+	assert.True(t, expired)
+	assert.Equal(t, "", val)
+}
+
+// TestBoundarySharedDictConcurrentAccess 测试并发访问。
+func TestBoundarySharedDictConcurrentAccess(t *testing.T) {
+	dict := NewSharedDict("test", 100)
+
+	var wg sync.WaitGroup
+	concurrency := 10
+	iterations := 100
+
+	for i := 0; i < concurrency; i++ {
+		wg.Add(1)
+		go func(id int) {
+			defer wg.Done()
+			for j := 0; j < iterations; j++ {
+				key := "key-" + string(rune('0'+id%10))
+				_, _ = dict.Set(key, "value", 0)
+				_, _, _ = dict.Get(key)
+			}
+		}(i)
+	}
+
+	wg.Wait()
+	// 如果没有竞态条件，测试通过
+}
+
+// TestBoundaryGetVariableAllTypes 测试所有变量类型。
+func TestBoundaryGetVariableAllTypes(t *testing.T) {
+	// 创建模拟请求上下文
+	ctx := &fasthttp.RequestCtx{}
+	ctx.Request.SetRequestURI("http://example.com/path?arg1=value1&arg2=value2")
+	ctx.Request.Header.SetMethod("POST")
+	ctx.Request.Header.Set("User-Agent", "test-agent")
+	ctx.Request.Header.Set("Content-Type", "application/json")
+	ctx.Request.Header.Set("X-Custom", "custom-value")
+
+	api := newNgxVarAPI(ctx)
+
+	tests := []struct {
+		name     string
+		expected string
+	}{
+		{"request_method", "POST"},
+		{"request_uri", "http://example.com/path?arg1=value1&arg2=value2"},
+		{"uri", "/path"},
+		{"query_string", "arg1=value1&arg2=value2"},
+		{"args", "arg1=value1&arg2=value2"},
+		{"http_host", "example.com"},
+		{"http_user_agent", "test-agent"},
+		{"http_content_type", "application/json"},
+		{"http_x-custom", "custom-value"},
+		{"arg_arg1", "value1"},
+		{"arg_arg2", "value2"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			val := api.getVariable(tt.name)
+			assert.Equal(t, tt.expected, val)
+		})
+	}
+}
+
+// TestBoundaryGetVariableLuaTypes 测试 Lua 类型返回。
+func TestBoundaryGetVariableLuaTypes(t *testing.T) {
+	ctx := &fasthttp.RequestCtx{}
+	ctx.Request.SetRequestURI("http://example.com/path")
+	ctx.Request.Header.SetMethod("GET")
+
+	api := newNgxVarAPI(ctx)
+
+	// request_length 应该返回数值类型
+	lv := api.getVariableLua("request_length")
+	if lv == nil {
+		t.Log("request_length returned nil (acceptable)")
+	} else if _, ok := lv.(glua.LNumber); !ok {
+		t.Errorf("request_length should return LNumber, got %T", lv)
+	}
+
+	// request_method 应该返回字符串类型
+	lv = api.getVariableLua("request_method")
+	if lv == nil {
+		t.Error("request_method should not return nil")
+	} else if _, ok := lv.(glua.LString); !ok {
+		t.Errorf("request_method should return LString, got %T", lv)
+	}
+}
+
+// TestBoundaryGetVariableCustom 测试自定义变量。
+func TestBoundaryGetVariableCustom(t *testing.T) {
+	ctx := &fasthttp.RequestCtx{}
+	api := newNgxVarAPI(ctx)
+
+	// 设置自定义变量
+	api.SetVariable("custom_var", "custom_value")
+
+	// 读取自定义变量
+	val, ok := api.GetVariable("custom_var")
+	assert.True(t, ok)
+	assert.Equal(t, "custom_value", val)
+
+	// 读取不存在的变量
+	_, ok = api.GetVariable("nonexistent")
+	assert.False(t, ok)
+}
+
+// TestBoundaryCoroutineExecutionTimeout 测试协程执行超时。
+func TestBoundaryCoroutineExecutionTimeout(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	// 创建带超时的上下文
+	ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
+	defer cancel()
+
+	co, err := engine.NewCoroutine(nil)
+	require.NoError(t, err)
+	defer co.Close()
+
+	co.ExecutionContext = ctx
+
+	err = co.SetupSandbox()
+	require.NoError(t, err)
+
+	// 执行一个长时间运行的脚本应该被中断
+	err = co.Execute(`
+		local start = os.time()
+		while os.time() - start < 10 do
+			-- 忙等待
+		end
+	`)
+	// 超时错误是预期的
+	if err == nil {
+		t.Log("Script completed quickly (no timeout)")
+	}
+}
+
+// TestBoundaryTimerHandleString 测试定时器句柄字符串表示。
+func TestBoundaryTimerHandleString(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	timerMgr := engine.TimerManager()
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+	RegisterTimerAPI(L, timerMgr, ngx)
+
+	err = L.DoString(`
+		local handle = ngx.timer.at(10, function() end)
+		if not handle then
+			error("Failed to create timer")
+		end
+
+		local str = tostring(handle)
+		if not string.find(str, "ngx.timer.handle:") then
+			error("Invalid handle string: " .. str)
+		end
+
+		handle:cancel()
+	`)
+	assert.NoError(t, err)
+}
+
+// TestBoundaryTimerWaitAll 测试等待所有定时器完成。
+func TestBoundaryTimerWaitAll(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	timerMgr := engine.TimerManager()
+
+	// 创建短延迟定时器
+	callback := func(L *glua.LState) int { return 0 }
+	L := glua.NewState()
+	defer L.Close()
+
+	fn := L.NewFunction(callback)
+
+	handle1, _ := timerMgr.At(50*time.Millisecond, fn, nil)
+	handle2, _ := timerMgr.At(100*time.Millisecond, fn, nil)
+
+	require.NotNil(t, handle1)
+	require.NotNil(t, handle2)
+
+	// 等待所有完成
+	completed := timerMgr.WaitAll(500 * time.Millisecond)
+	assert.True(t, completed)
+
+	// 活跃计数应该为 0
+	assert.Equal(t, int32(0), timerMgr.ActiveCount())
+}
+
+// TestBoundarySharedDictAddExisting 测试 Add 已存在的键。
+func TestBoundarySharedDictAddExisting(t *testing.T) {
+	dict := NewSharedDict("test", 10)
+
+	// 第一次 Add 应该成功
+	ok, _ := dict.Add("key", "value1", 0)
+	assert.True(t, ok)
+
+	// 第二次 Add 应该失败
+	ok, _ = dict.Add("key", "value2", 0)
+	assert.False(t, ok)
+
+	// 值应该仍然是第一个
+	val, _, _ := dict.Get("key")
+	assert.Equal(t, "value1", val)
+}
+
+// TestBoundarySharedDictFlushExpired 测试批量清理过期条目。
+func TestBoundarySharedDictFlushExpired(t *testing.T) {
+	dict := NewSharedDict("test", 10)
+
+	// 设置过期条目（它们会在 LRU 链表前端）
+	dict.Set("expire1", "value", 50*time.Millisecond)
+	dict.Set("expire2", "value", 50*time.Millisecond)
+
+	// 等待过期
+	time.Sleep(100 * time.Millisecond)
+
+	// 设置不过期条目（它们会在 LRU 链表前端，过期条目在尾部）
+	dict.Set("keep1", "value", time.Hour)
+	dict.Set("keep2", "value", time.Hour)
+
+	// 清理过期条目 - evictExpired 从 LRU 尾部开始检查
+	_ = dict.FlushExpired()
+
+	// 验证过期条目被清理
+	assert.Equal(t, 2, dict.Size())
+}
+
+// TestBoundarySharedDictFlushAll 测试清空字典。
+func TestBoundarySharedDictFlushAll(t *testing.T) {
+	dict := NewSharedDict("test", 10)
+
+	// 添加多个条目
+	dict.Set("a", "1", 0)
+	dict.Set("b", "2", 0)
+	dict.Set("c", "3", 0)
+
+	assert.Equal(t, 3, dict.Size())
+
+	// 清空
+	_ = dict.FlushAll()
+
+	assert.Equal(t, 0, dict.Size())
+	assert.Equal(t, 10, dict.FreeSlots())
+}
diff --git a/internal/lua/scheduler_test.go b/internal/lua/scheduler_test.go
new file mode 100644
index 0000000..68bac3f
--- /dev/null
+++ b/internal/lua/scheduler_test.go
@@ -0,0 +1,483 @@
+// Package lua 提供 Scheduler 模式测试。
+//
+// 该文件测试 Lua Scheduler 模式的功能：
+//   - setupSchedulerNgxAPI
+//   - setSchedulerMode / IsSchedulerMode
+//   - SchedulerUnsafeLocationAPI
+//   - SchedulerUnsafeVarAPI
+//   - SchedulerUnsafeCtxAPI
+//
+// 作者：xfy
+package lua
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	glua "github.com/yuin/gopher-lua"
+)
+
+// TestSchedulerModeFlag 测试 Scheduler 模式标志。
+func TestSchedulerModeFlag(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	// 初始状态不是 scheduler 模式
+	if IsSchedulerMode(L) {
+		t.Error("Initial state should not be scheduler mode")
+	}
+
+	// 设置 scheduler 模式
+	setSchedulerMode(L, true)
+	if !IsSchedulerMode(L) {
+		t.Error("Should be in scheduler mode after setting")
+	}
+
+	// 关闭 scheduler 模式
+	setSchedulerMode(L, false)
+	if IsSchedulerMode(L) {
+		t.Error("Should not be in scheduler mode after unsetting")
+	}
+}
+
+// TestSetupSchedulerNgxAPI 测试 setupSchedulerNgxAPI 创建安全的 ngx API。
+func TestSetupSchedulerNgxAPI(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	L := glua.NewState()
+	defer L.Close()
+
+	// 调用 setupSchedulerNgxAPI
+	setupSchedulerNgxAPI(L, engine)
+
+	// 验证 ngx 表存在
+	ngx := L.GetGlobal("ngx")
+	if ngx == glua.LNil {
+		t.Fatal("ngx table should exist")
+	}
+
+	ngxTable, ok := ngx.(*glua.LTable)
+	if !ok {
+		t.Fatal("ngx should be a table")
+	}
+
+	// 验证 scheduler 模式已设置
+	if !IsSchedulerMode(L) {
+		t.Error("Should be in scheduler mode after setupSchedulerNgxAPI")
+	}
+
+	// 验证 ngx.shared 存在
+	shared := ngxTable.RawGetString("shared")
+	if shared == glua.LNil {
+		t.Error("ngx.shared should exist")
+	}
+
+	// 验证 ngx.log 存在
+	log := ngxTable.RawGetString("log")
+	if log == glua.LNil {
+		t.Error("ngx.log should exist")
+	}
+
+	// 验证 ngx.timer 存在
+	timer := ngxTable.RawGetString("timer")
+	if timer == glua.LNil {
+		t.Error("ngx.timer should exist")
+	}
+}
+
+// TestSchedulerUnsafeLocationAPI 测试 Scheduler 模式下 ngx.location 不可用。
+func TestSchedulerUnsafeLocationAPI(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	// 注册不安全的 location API
+	RegisterSchedulerUnsafeLocationAPI(L, ngx)
+
+	// 验证 ngx.location 存在
+	location := ngx.RawGetString("location")
+	if location == glua.LNil {
+		t.Fatal("ngx.location should exist")
+	}
+
+	// 尝试调用 ngx.location.capture 应该返回错误
+	err := L.DoString(`
+		local ok, err = pcall(function()
+			ngx.location.capture("/test")
+		end)
+		if ok then
+			error("ngx.location.capture should fail in scheduler mode")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerUnsafeVarAPI 测试 Scheduler 模式下 ngx.var 不可用。
+func TestSchedulerUnsafeVarAPI(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	// 注册不安全的 var API
+	RegisterSchedulerUnsafeVarAPI(L, ngx)
+
+	// 验证 ngx.var 存在
+	v := ngx.RawGetString("var")
+	if v == glua.LNil {
+		t.Fatal("ngx.var should exist")
+	}
+
+	// 尝试读取 ngx.var 应该返回错误
+	err := L.DoString(`
+		local ok, err = pcall(function()
+			local x = ngx.var.some_var
+		end)
+		if ok then
+			error("reading ngx.var should fail in scheduler mode")
+		end
+	`)
+	assert.NoError(t, err)
+
+	// 尝试写入 ngx.var 应该返回错误
+	err = L.DoString(`
+		local ok, err = pcall(function()
+			ngx.var.some_var = "value"
+		end)
+		if ok then
+			error("writing ngx.var should fail in scheduler mode")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerUnsafeCtxAPI 测试 Scheduler 模式下 ngx.ctx 不可用。
+func TestSchedulerUnsafeCtxAPISeparate(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	// 注册不安全的 ctx API
+	RegisterSchedulerUnsafeCtxAPI(L, ngx)
+
+	// 验证 ngx.ctx 存在
+	ctx := ngx.RawGetString("ctx")
+	if ctx == glua.LNil {
+		t.Fatal("ngx.ctx should exist")
+	}
+
+	// 尝试读取 ngx.ctx 应该返回错误
+	err := L.DoString(`
+		local ok, err = pcall(function()
+			local x = ngx.ctx.some_key
+		end)
+		if ok then
+			error("reading ngx.ctx should fail in scheduler mode")
+		end
+	`)
+	assert.NoError(t, err)
+
+	// 尝试写入 ngx.ctx 应该返回错误
+	err = L.DoString(`
+		local ok, err = pcall(function()
+			ngx.ctx.some_key = "value"
+		end)
+		if ok then
+			error("writing ngx.ctx should fail in scheduler mode")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerUnsafeLogAPI 测试 Scheduler 模式下 ngx.log 可用。
+func TestSchedulerUnsafeLogAPI(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	// 注册 Scheduler 日志 API
+	RegisterSchedulerLogAPI(L, ngx)
+
+	// 验证 ngx.log 存在
+	log := ngx.RawGetString("log")
+	if log == glua.LNil {
+		t.Fatal("ngx.log should exist")
+	}
+
+	// ngx.log 应该可以调用（不会报错）
+	err := L.DoString(`
+		ngx.log(ngx.ERR, "test log message")
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerUnsafeReqAPI 测试 Scheduler 模式下 ngx.req 不可用。
+func TestSchedulerUnsafeReqAPISeparate(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	// 注册不安全的 req API
+	RegisterSchedulerUnsafeReqAPI(L, ngx)
+
+	// 验证 ngx["ngx.req"] 存在（RegisterUnsafeAPI 使用完整名称作为键）
+	req := ngx.RawGetString("ngx.req")
+	if req == glua.LNil {
+		t.Fatal("ngx[\"ngx.req\"] should exist")
+	}
+
+	// 尝试调用 ngx.req.get_method 应该返回错误
+	err := L.DoString(`
+		local ok, err = pcall(function()
+			ngx["ngx.req"].get_method()
+		end)
+		if ok then
+			error("ngx.req.get_method should fail in scheduler mode")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerUnsafeRespAPI 测试 Scheduler 模式下 ngx.resp 不可用。
+func TestSchedulerUnsafeRespAPISeparate(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	// 注册不安全的 resp API
+	RegisterSchedulerUnsafeRespAPI(L, ngx)
+
+	// 验证 ngx["ngx.resp"] 存在（RegisterUnsafeAPI 使用完整名称作为键）
+	resp := ngx.RawGetString("ngx.resp")
+	if resp == glua.LNil {
+		t.Fatal("ngx[\"ngx.resp\"] should exist")
+	}
+
+	// 尝试调用 ngx.resp.get_headers 应该返回错误
+	err := L.DoString(`
+		local ok, err = pcall(function()
+			ngx["ngx.resp"].get_headers()
+		end)
+		if ok then
+			error("ngx.resp.get_headers should fail in scheduler mode")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerSharedDictAvailable 测试 Scheduler 模式下 ngx.shared 可用。
+func TestSchedulerSharedDictAvailable(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	// 创建共享字典
+	engine.CreateSharedDict("test_dict", 100)
+
+	L := glua.NewState()
+	defer L.Close()
+
+	// 调用 setupSchedulerNgxAPI
+	setupSchedulerNgxAPI(L, engine)
+
+	// 验证 ngx.shared.DICT 存在
+	err = L.DoString(`
+		if ngx.shared == nil then
+			error("ngx.shared should exist")
+		end
+		local dict = ngx.shared.DICT("test_dict")
+		if dict == nil then
+			error("ngx.shared.DICT('test_dict') should return dict")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerTimerAvailable 测试 Scheduler 模式下 ngx.timer 可用。
+func TestSchedulerTimerAvailable(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	L := glua.NewState()
+	defer L.Close()
+
+	// 调用 setupSchedulerNgxAPI
+	setupSchedulerNgxAPI(L, engine)
+
+	// 验证 ngx.timer 存在
+	err = L.DoString(`
+		if ngx.timer == nil then
+			error("ngx.timer should exist")
+		end
+		if ngx.timer.at == nil then
+			error("ngx.timer.at should exist")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerModeIsolation 测试 Scheduler 模式与普通模式隔离。
+func TestSchedulerModeIsolation(t *testing.T) {
+	// 创建两个 LState，一个在 scheduler 模式，一个不在
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	// 普通 LState
+	normalL := glua.NewState()
+	defer normalL.Close()
+
+	// Scheduler LState
+	schedulerL := glua.NewState()
+	defer schedulerL.Close()
+
+	setupSchedulerNgxAPI(schedulerL, engine)
+
+	// 验证普通 LState 不是 scheduler 模式
+	if IsSchedulerMode(normalL) {
+		t.Error("Normal LState should not be in scheduler mode")
+	}
+
+	// 验证 Scheduler LState 是 scheduler 模式
+	if !IsSchedulerMode(schedulerL) {
+		t.Error("Scheduler LState should be in scheduler mode")
+	}
+}
+
+// TestSchedulerErrorMessages 测试 Scheduler 模式下错误消息格式。
+func TestSchedulerErrorMessages(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	RegisterSchedulerUnsafeLocationAPI(L, ngx)
+	RegisterSchedulerUnsafeVarAPI(L, ngx)
+	RegisterSchedulerUnsafeCtxAPI(L, ngx)
+
+	// 测试 location 错误消息
+	err := L.DoString(`
+		local ok, err = pcall(function()
+			ngx.location.capture("/test")
+		end)
+		if not string.find(err, "not available") then
+			error("Error message should mention 'not available': " .. tostring(err))
+		end
+	`)
+	assert.NoError(t, err)
+
+	// 测试 var 错误消息
+	err = L.DoString(`
+		local ok, err = pcall(function()
+			local x = ngx.var.test
+		end)
+		if not string.find(err, "not available") then
+			error("Error message should mention 'not available': " .. tostring(err))
+		end
+	`)
+	assert.NoError(t, err)
+
+	// 测试 ctx 错误消息
+	err = L.DoString(`
+		local ok, err = pcall(function()
+			local x = ngx.ctx.test
+		end)
+		if not string.find(err, "not available") then
+			error("Error message should mention 'not available': " .. tostring(err))
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerMultipleUnsafeCalls 测试多次调用不安全 API。
+func TestSchedulerMultipleUnsafeCalls(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	RegisterSchedulerUnsafeVarAPI(L, ngx)
+
+	// 多次调用都应该失败
+	err := L.DoString(`
+		for i = 1, 5 do
+			local ok, err = pcall(function()
+				ngx.var["key" .. i] = "value" .. i
+			end)
+			if ok then
+				error("Call " .. i .. " should have failed")
+			end
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerNilValueHandling 测试 Scheduler 模式下处理 nil 值。
+func TestSchedulerNilValueHandling(t *testing.T) {
+	L := glua.NewState()
+	defer L.Close()
+
+	ngx := L.NewTable()
+	L.SetGlobal("ngx", ngx)
+
+	RegisterSchedulerUnsafeVarAPI(L, ngx)
+
+	// 尝试读取 nil 键
+	err := L.DoString(`
+		local ok, err = pcall(function()
+			local x = ngx.var[nil]
+		end)
+		if ok then
+			error("Reading nil key should fail")
+		end
+	`)
+	assert.NoError(t, err)
+}
+
+// TestSchedulerConcurrentAccess 测试并发访问 Scheduler API。
+func TestSchedulerConcurrentAccess(t *testing.T) {
+	engine, err := NewEngine(DefaultConfig())
+	require.NoError(t, err)
+	defer engine.Close()
+
+	// 创建多个 LState 并发访问
+	done := make(chan bool, 10)
+
+	for i := 0; i < 10; i++ {
+		go func() {
+			L := glua.NewState()
+			defer L.Close()
+
+			setupSchedulerNgxAPI(L, engine)
+
+			// 验证 scheduler 模式
+			if !IsSchedulerMode(L) {
+				t.Error("Should be in scheduler mode")
+			}
+
+			done <- true
+		}()
+	}
+
+	// 等待所有 goroutine 完成
+	for i := 0; i < 10; i++ {
+		<-done
+	}
+}