Fix test isolating

Author: Exelord

package-lock.json

@@ -47,7 +47,7 @@
     "ember-cli-htmlbars-inline-precompile": "1.0.2",
     "ember-cli-inject-live-reload": "1.7.0",
     "ember-cli-pretender": "1.0.1",
-    "ember-cli-qunit": "4.3.2",
+    "ember-qunit": "3.4.0",
     "ember-cli-release": "1.0.0-beta.2",
     "ember-cli-sass": "7.1.7",
     "ember-cli-shims": "1.2.0",

package.json

@@ -5,4 +5,4 @@ import { start } from 'ember-qunit';
 
 setApplication(Application.create(config.APP));
 
-start();
+start({ setupTestIsolationValidation: true });

tests/test-helper.js

@@ -166,7 +166,7 @@ test('resource action pushes to store', function(assert) {
   });
 });
 
-test('responseTypes', function(assert) {
+test('responseTypes', async function(assert) {
   assert.expect(6);
 
   this.server.post('/posts/list', (request) => {
@@ -177,9 +177,9 @@ test('responseTypes', function(assert) {
 
   let model = this.subject();
 
-  let promise = model.list();
-  let promiseArray = model.list(null, { responseType: 'array' });
-  let promiseObject = model.list(null, { responseType: 'object' });
+  let promise; await (promise = model.list());
+  let promiseArray; await (promiseArray = model.list(null, { responseType: 'array' }));
+  let promiseObject; await (promiseObject = model.list(null, { responseType: 'object' }));
 
   assert.equal(promise.constructor, RSVP.Promise);
   assert.equal(promiseArray.constructor.superclass, ArrayProxy);