fix: restore wechat payment oauth and jsapi flow

frontend/src/views/auth/__tests__/WechatPaymentCallbackView.spec.ts

@@ -0,0 +1,80 @@
+import { flushPromises, mount } from '@vue/test-utils'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import WechatPaymentCallbackView from '@/views/auth/WechatPaymentCallbackView.vue'
+
+const { replaceMock, routeState, locationState } = vi.hoisted(() => ({
+  replaceMock: vi.fn(),
+  routeState: {
+    query: {} as Record<string, unknown>,
+  },
+  locationState: {
+    current: {
+      href: 'http://localhost/auth/wechat/payment/callback',
+      hash: '',
+      search: '',
+      pathname: '/auth/wechat/payment/callback',
+      origin: 'http://localhost',
+    } as Location & { origin: string },
+  },
+}))
+
+vi.mock('vue-router', () => ({
+  useRoute: () => routeState,
+  useRouter: () => ({
+    replace: replaceMock,
+  }),
+}))
+
+vi.mock('vue-i18n', () => ({
+  useI18n: () => ({
+    t: (key: string) => key,
+    locale: { value: 'zh-CN' },
+  }),
+}))
+
+describe('WechatPaymentCallbackView', () => {
+  beforeEach(() => {
+    replaceMock.mockReset()
+    routeState.query = {}
+    locationState.current = {
+      href: 'http://localhost/auth/wechat/payment/callback',
+      hash: '',
+      search: '',
+      pathname: '/auth/wechat/payment/callback',
+      origin: 'http://localhost',
+    } as Location & { origin: string }
+    Object.defineProperty(window, 'location', {
+      configurable: true,
+      value: locationState.current,
+    })
+  })
+
+  it('redirects back to purchase with openid and payment context from hash fragment', async () => {
+    locationState.current.hash = '#openid=openid-123&payment_type=wxpay&amount=12.5&order_type=balance&redirect=%2Fpurchase%3Ffrom%3Dwechat'
+
+    mount(WechatPaymentCallbackView)
+    await flushPromises()
+
+    expect(replaceMock).toHaveBeenCalledWith({
+      path: '/purchase',
+      query: {
+        from: 'wechat',
+        wechat_resume: '1',
+        openid: 'openid-123',
+        payment_type: 'wxpay',
+        amount: '12.5',
+        order_type: 'balance',
+      },
+    })
+  })
+
+  it('shows an error when the callback payload is missing openid', async () => {
+    locationState.current.hash = '#payment_type=wxpay'
+
+    const wrapper = mount(WechatPaymentCallbackView)
+    await flushPromises()
+
+    expect(replaceMock).not.toHaveBeenCalled()
+    expect(wrapper.text()).toContain('微信支付回调缺少 openid。')
+  })
+})