Setup IE11 CI as targets still include IE11

.github/workflows/ci.yml

@@ -21,6 +21,26 @@ jobs:
     - name: Lint
       run: yarn lint
 
+  build-windows:
+    runs-on: windows-latest
+    needs: lint
+    timeout-minutes: 10
+    strategy:
+      fail-fast: false
+      matrix:
+        browser: [
+          'ie'
+        ]
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 1
+    - uses: volta-cli/action@v1
+    - name: Install dependencies
+      run: yarn install --frozen-lockfile
+    - name: Test
+      run: yarn test:ember --launch ${{ matrix.browser }}
+
   test:
     name: Tests
     runs-on: ${{ matrix.os }}

ember-cli-build.js

@@ -14,6 +14,8 @@ module.exports = function (defaults) {
     behave. You most likely want to be modifying `./index.js` or app's build file
   */
 
+  app.import({ test: 'vendor/ie11-promise.js' });
+
   const { maybeEmbroider } = require('@embroider/test-setup');
   return maybeEmbroider(app, {
     skipBabel: [

tests/unit/services/window-messenger-events-test.js

@@ -1,5 +1,6 @@
 import { module, test } from 'qunit';
 import { setupTest } from 'ember-qunit';
+import { settled } from '@ember/test-helpers';
 
 module('Unit | Service | window messenger events', function (hooks) {
   setupTest(hooks);
@@ -23,6 +24,8 @@ module('Unit | Service | window messenger events', function (hooks) {
     // send first message
     window.postMessage(message, '*');
 
+    await settled();
+
     // send second message
     window.postMessage(message, '*');
   });
@@ -43,5 +46,6 @@ module('Unit | Service | window messenger events', function (hooks) {
     });
 
     window.postMessage(message, 'http://localhost:9999');
+    await settled();
   });
 });

tests/unit/services/window-messenger-server-test.js

@@ -10,10 +10,11 @@ module('Unit | Service | window messenger server', function (hooks) {
     let server = this.owner.lookup('service:window-messenger-server');
     let client = this.owner.lookup('service:window-messenger-client');
 
-    server.on('client-request', (/*resolve, reject, query*/) => {
+    server.on('client-request', (resolve /*, reject, query*/) => {
       assert.ok(true);
+      resolve();
     });
-    client.fetch('client-request');
+    await client.fetch('client-request');
   });
 
   test("it should not receive client's request if not a match", async function (assert) {
@@ -35,9 +36,10 @@ module('Unit | Service | window messenger server', function (hooks) {
 
     server.on('client-request', (resolve, reject, query) => {
       assert.equal(query.id, 1, 'it should have got query parameters');
+      resolve();
     });
 
-    client.fetch('client-request', {
+    await client.fetch('client-request', {
       id: 1,
     });
   });
@@ -50,9 +52,8 @@ module('Unit | Service | window messenger server', function (hooks) {
     server.on('client-request', () => {
       assert.ok(true);
     });
-
-    server.destroy();
     client.fetch('client-request');
+    server.destroy();
     await settled();
   });
 });

vendor/ie11-promise.js

@@ -0,0 +1,2 @@
+// https://github.com/babel/ember-cli-babel/issues/250
+self.Promise = self.Promise || Ember.RSVP.Promise;