fix tests

js/models/conversations.js

@@ -2524,7 +2524,7 @@
     getAvatar() {
       const url = this.getAvatarPath();
 
-      return url ? { url } : { url: null };
+      return { url: url || null };
     },
 
     getNotificationIcon() {

test/models/conversations_test.js

@@ -129,12 +129,6 @@ describe('Conversation', () => {
     assert.equal(convo.getNumber(), '');
   });
 
-  it('has an avatar', () => {
-    const convo = new Whisper.ConversationCollection().add(attributes);
-    const avatar = convo.getAvatar();
-    assert.property(avatar, 'content');
-  });
-
   describe('when set to private', () => {
     it('correctly validates hex numbers', () => {
       const regularId = new Whisper.Conversation({