use new test syntax

.eslintrc.js

@@ -49,15 +49,6 @@ module.exports = {
       })
     },
 
-    // test files
-    {
-      files: ['tests/**/*.js'],
-      excludedFiles: ['tests/dummy/**/*.js'],
-      env: {
-        embertest: true
-      }
-    },
-
     {
       files: ['node-tests/**/*.js'],
       env: {

package.json

@@ -39,6 +39,7 @@
     "ember-disable-prototype-extensions": "^1.1.2",
     "ember-load-initializers": "^1.0.0",
     "ember-macro-test-helpers": "^3.1.0",
+    "ember-maybe-import-regenerator": "^0.1.6",
     "ember-resolver": "^4.0.0",
     "ember-sinon": "^2.1.0",
     "ember-source": "~3.1.0",

tests/acceptance/application-test.js

@@ -1,44 +1,35 @@
-import { test } from 'qunit';
-import moduleForAcceptance from '../../tests/helpers/module-for-acceptance';
+import { click, find, visit } from '@ember/test-helpers';
+import { module, test } from 'qunit';
+import { setupApplicationTest } from 'ember-qunit';
 
-moduleForAcceptance('Acceptance | application');
+module('Acceptance | application', function(hooks) {
+  setupApplicationTest(hooks);
 
-test('double render failing test', function(assert) {
-  visit('/double-render');
+  test('double render failing test', async function(assert) {
+    await visit('/double-render');
 
-  andThen(function() {
-    assert.equal(find('.computed').text(), 'test val 1');
-  });
+    assert.equal(find('.computed').textContent, 'test val 1');
 
-  click('button');
+    await click('button');
 
-  andThen(function() {
-    assert.equal(find('.computed').text(), 'test val 2');
-  });
+    assert.equal(find('.computed').textContent, 'test val 2');
 
-  click('button');
+    await click('button');
 
-  andThen(function() {
-    assert.equal(find('.computed').text(), 'test val 3');
+    assert.equal(find('.computed').textContent, 'test val 3');
   });
-});
 
-test('no rerender failing test', function(assert) {
-  visit('/no-rerender');
+  test('no rerender failing test', async function(assert) {
+    await visit('/no-rerender');
 
-  andThen(function() {
-    assert.equal(find('.items').text(), 1);
-  });
+    assert.equal(find('.items').textContent, 1);
 
-  click('button');
+    await click('button');
 
-  andThen(function() {
-    assert.equal(find('.items').text(), 0);
-  });
+    assert.equal(find('.items').textContent, 0);
 
-  click('button');
+    await click('button');
 
-  andThen(function() {
-    assert.equal(find('.items').text(), 1);
+    assert.equal(find('.items').textContent, 1);
   });
 });