try deprecate-merge codemod (#709)

[FEAT] test deprecate-merge codemod

Author: rajasegar

test/fixtures/codemod/latest-node/my-app/app/controllers/application.js

@@ -1,5 +1,6 @@
 import Controller from '@ember/controller';
 import Ember from 'ember';
+import { assign } from '@ember/polyfills';
 
 export default Controller.extend({
   actions: {
@@ -9,6 +10,12 @@ export default Controller.extend({
 
       this.doStuff(object);
       object.notifyPropertyChange('someProperty');
+    },
+
+    bar() {
+      let a = { first: 'Yehuda' };
+      let b = { last: 'Katz' };
+      assign(a, b);
     }
   }
 });

test/fixtures/codemod/local/my-app/app/controllers/application.js

@@ -1,4 +1,5 @@
 import Ember from 'ember';
+import { merge } from '@ember/polyfills';
 
 export default Ember.Controller.extend({
   actions: {
@@ -10,6 +11,12 @@ export default Ember.Controller.extend({
       object.propertyWillChange('someProperty');
       this.doStuff(object);
       object.propertyDidChange('someProperty');
+    },
+
+    bar() {
+      let a = { first: 'Yehuda' };
+      let b = { last: 'Katz' };
+      merge(a, b);
     }
   }
 });

test/fixtures/codemod/min-node/my-app/app/controllers/application.js

@@ -1,5 +1,6 @@
 import Controller from '@ember/controller';
 import Ember from 'ember';
+import { assign } from '@ember/polyfills';
 
 export default Controller.extend({
   actions: {
@@ -9,6 +10,12 @@ export default Controller.extend({
 
       this.doStuff(object);
       object.notifyPropertyChange('someProperty');
+    },
+
+    bar() {
+      let a = { first: 'Yehuda' };
+      let b = { last: 'Katz' };
+      assign(a, b);
     }
   }
 });