同步小程序讲解页面标题

tests/unit/IndexLaunchOverlay.spec.ts

@@ -11,6 +11,14 @@ const testState = vi.hoisted(() => ({
   onShowHandler: null as null | (() => Promise<void> | void)
 }))
 
+const hostEnvironmentMocks = vi.hoisted(() => ({
+  embeddedInWechatMiniProgram: false
+}))
+
+const hostNavigationTitleMocks = vi.hoisted(() => ({
+  syncHostNavigationTitle: vi.fn()
+}))
+
 vi.mock('@dcloudio/uni-app', () => ({
   onLoad: vi.fn(),
   onShow: (handler: () => Promise<void> | void) => {
@@ -19,7 +27,11 @@ vi.mock('@dcloudio/uni-app', () => ({
 }))
 
 vi.mock('@/utils/hostEnvironment', () => ({
-  isEmbeddedInWechatMiniProgram: () => false
+  isEmbeddedInWechatMiniProgram: () => hostEnvironmentMocks.embeddedInWechatMiniProgram
+}))
+
+vi.mock('@/utils/hostNavigationTitle', () => ({
+  syncHostNavigationTitle: hostNavigationTitleMocks.syncHostNavigationTitle
 }))
 
 const modelSource = {
@@ -107,7 +119,9 @@ beforeEach(() => {
   testState.threeMapMountCount = 0
   testState.threeMapUnmountCount = 0
   testState.onShowHandler = null
-  window.history.replaceState({}, '', '/#/pages/index/index?tab=guide')
+  hostEnvironmentMocks.embeddedInWechatMiniProgram = false
+  hostNavigationTitleMocks.syncHostNavigationTitle.mockReset()
+  window.location.hash = '#/pages/index/index?tab=guide'
   vi.stubGlobal('uni', {
     navigateTo: vi.fn(),
     navigateBack: vi.fn(),
@@ -124,6 +138,16 @@ afterEach(() => {
 })
 
 describe('首页启动遮罩与馆内模型生命周期', () => {
+  it('嵌入小程序打开讲解首页时同步免费讲解标题', async () => {
+    hostEnvironmentMocks.embeddedInWechatMiniProgram = true
+    window.location.hash = '#/pages/index/index?tab=explain&embedded=wechat-mini-program'
+
+    const wrapper = await mountIndex()
+
+    expect(hostNavigationTitleMocks.syncHostNavigationTitle).toHaveBeenCalledWith('免费讲解')
+    wrapper.unmount()
+  })
+
   it('12 秒超时后仍保持 indoor，且不会挂载 TencentMap', async () => {
     const wrapper = await mountIndex()