Merge "Set the mAccountName as null while device has no any account"

tests/robotests/src/com/android/settings/accounts/AvatarViewMixinTest.java

@@ -130,6 +130,17 @@ public class AvatarViewMixinTest {
         verify(mockAvatar).hasAccount();
     }
 
+    @Test
+    @Config(qualifiers = "mcc999")
+    public void onStart_noAccount_mAccountNameShouldBeNull() {
+        final AvatarViewMixin avatarViewMixin = new AvatarViewMixin(mActivity, mImageView);
+        avatarViewMixin.mAccountName = DUMMY_ACCOUNT;
+
+        avatarViewMixin.onStart();
+
+        assertThat(avatarViewMixin.mAccountName).isNull();
+    }
+
     @Test
     public void queryProviderAuthority_useShadowPackagteManager_returnNull() {
         final AvatarViewMixin avatarViewMixin = new AvatarViewMixin(mActivity, mImageView);