fix: 修复iOS抖音支付回跳注册

tests/douyin-integration.test.cjs

@@ -33,6 +33,7 @@ function uniMock() {
   const navigations = [];
   return { storage, messages, navigations, getStorageSync: k => storage.get(k), setStorageSync: (k,v) => storage.set(k,v),
     removeStorageSync: k => storage.delete(k), showToast: v => messages.push(v.title), $emit() {},
+    getSystemInfoSync: () => ({ platform: 'android' }),
     showModal: () => assert.fail('Douyin must not add payment confirmation modals'),
     showLoading() {}, hideLoading() {},
     navigateTo: options => { navigations.push(options.url); options.success?.(); },
@@ -53,6 +54,34 @@ async function payContext(overrides = {}, app = true) {
 }
 const successPage = '/pages/order_package/order_submit_ok/order_submit_ok';
 const failurePage = '/pages/order_package/order_submit_error/order_submit_error';
+
+test('iOS always registers the installed host Scheme without a Universal Link', async () => {
+  for (const overrides of [{}, { callbackScheme: 'wrong-app' }, { callbackScheme: 'trustbridgeapp://' },
+    { universalLink: 'https://app.tbmall.xin/uni-universallinks/__UNI__4910728/' },
+    { UniversalLinks: 'https://example.com/return/' }]) {
+    let registration;
+    let signedInfo;
+    const ctx = await payContext({
+      initDypay: options => { registration = options; return true; },
+      openDypay: (options, cb) => { signedInfo = options.payInfo; cb({ resultCode: '0' }); }
+    });
+    ctx.uni.getSystemInfoSync = () => ({ platform: 'ios' });
+    const current = { ...payment, douyin: { ...payment.douyin, ...overrides } };
+    const result = await ctx.appDypayFun(current);
+    assert.deepEqual({ ...registration }, { appId: 'app', callbackScheme: 'trustbridgeapp' });
+    assert.deepEqual(signedInfo, ctx.toSdkPayInfo(current));
+    assert.equal(result.state, 'paid');
+    assert.deepEqual(ctx.uni.navigations, [successPage]);
+  }
+});
+
+test('Android keeps its existing callback Scheme selection', async () => {
+  let registration;
+  const ctx = await payContext({ initDypay: options => { registration = options; return true; } });
+  await ctx.appDypayFun({ ...payment, douyin: { ...payment.douyin, callbackScheme: 'android-host' } });
+  assert.equal(registration.callbackScheme, 'android-host');
+  assert.equal(registration.appId, 'app');
+});
 test('SDK success is confirmed with server before showing success', async () => {
   let queries = 0;
   const ctx = await payContext({ request: async () => { queries++; return { bizcode:100, data:{state:2} }; } });