fix tests using peekRecord with upper-case ids

Author: mansona

tests/acceptance/class-test.js

@@ -15,7 +15,7 @@ module('Acceptance | Class', function (hooks) {
 
   test('lists all the methods on the class page', async function (assert) {
     const store = this.owner.lookup('service:store');
-    const container = store.peekRecord('class', 'ember-1.0.0-Container');
+    const container = store.peekRecord('class', 'ember-1.0.0-container');
     assert.equal(
       findAll('.spec-method-list li').length,
       container.get('methods.length')
@@ -32,7 +32,7 @@ module('Acceptance | Class', function (hooks) {
 
   test('lists all the properties on the class page', function (assert) {
     const store = this.owner.lookup('service:store');
-    const container = store.peekRecord('class', 'ember-1.0.0-Container');
+    const container = store.peekRecord('class', 'ember-1.0.0-container');
     assert.equal(
       findAll('.spec-property-list li').length,
       container.get('properties.length')
@@ -41,7 +41,7 @@ module('Acceptance | Class', function (hooks) {
 
   test('lists all the events on the class page', function (assert) {
     const store = this.owner.lookup('service:store');
-    const container = store.peekRecord('class', 'ember-1.0.0-Container');
+    const container = store.peekRecord('class', 'ember-1.0.0-container');
     assert.equal(
       findAll('.spec-event-list li').length,
       container.get('events.length')