Update to QUnit 2.5.0

addon-test-support/ember-qunit/adapter.js

@@ -15,7 +15,7 @@ function unhandledRejectionAssertion(current, error) {
     source = 'unknown source';
   }
 
-  current.pushResult({
+  current.assert.pushResult({
     result: false,
     actual: false,
     expected: true,

package.json

@@ -33,7 +33,7 @@
     "common-tags": "^1.4.0",
     "ember-cli-babel": "^6.3.0",
     "ember-cli-test-loader": "^2.2.0",
-    "qunit": "^2.4.1"
+    "qunit": "^2.5.0"
   },
   "devDependencies": {
     "ember-cli": "~2.15.1",

tests/unit/unhandled-rejection-test.js

@@ -0,0 +1,45 @@
+import { Promise as RSVPPromise } from 'rsvp';
+import { module, test } from 'qunit';
+
+const HAS_NATIVE_PROMISE = typeof Promise !== 'undefined';
+const HAS_UNHANDLED_REJECTION_HANDLER = 'onunhandledrejection' in window;
+
+module('unhandle promise rejections', function(hooks) {
+  hooks.beforeEach(function(assert) {
+    let originalPushResult = assert.pushResult;
+    assert.pushResult = function(resultInfo) {
+      // Inverts the result so we can test failing assertions
+      resultInfo.result = !resultInfo.result;
+      resultInfo.message = `Failed: ${resultInfo.message}`;
+      originalPushResult(resultInfo);
+    };
+  });
+
+  test('RSVP promises cause an unhandled rejection', function(assert) {
+    let done = assert.async();
+
+    // ensure we do not exit this test until the assertion has happened
+    setTimeout(done, 10);
+
+    new RSVPPromise(resolve => {
+      setTimeout(resolve);
+    }).then(function() {
+      throw new Error('whoops!');
+    });
+  });
+
+  if (HAS_NATIVE_PROMISE && HAS_UNHANDLED_REJECTION_HANDLER) {
+    test('native promises cause an unhandled rejection', function(assert) {
+      let done = assert.async();
+
+      // ensure we do not exit this test until the assertion has happened
+      setTimeout(done, 10);
+
+      new self.Promise(resolve => {
+        setTimeout(resolve);
+      }).then(function() {
+        throw new Error('whoops!');
+      });
+    });
+  }
+});