Convert component tests to integration tests. Don't test internals anymore

Author: aomran

.template-lintrc.js

@@ -1,5 +1,8 @@
 'use strict';
 
 module.exports = {
-  extends: 'recommended'
+  extends: 'recommended',
+  rules: {
+    'block-indentation': "tab"
+  }
 };

addon/components/ember-chart.js

@@ -4,7 +4,12 @@ import Component from '@ember/component';
 export default Component.extend({
   tagName: 'canvas',
   attributeBindings: ['width', 'height'],
-  plugins: [],
+
+  init() {
+    this._super(...arguments);
+
+    this.plugins = this.plugins || [];
+  },
 
   didInsertElement() {
     this._super(...arguments);
@@ -38,7 +43,7 @@ export default Component.extend({
     let data    = this.get('data');
     let options = this.get('options');
     let animate = this.get('animate');
-		
+
 		if (chart) {
 			chart.data = data;
 			chart.options = options;