Index: test/clang-tidy/readability-identifier-naming-objc.m
===================================================================
--- test/clang-tidy/readability-identifier-naming-objc.m
+++ test/clang-tidy/readability-identifier-naming-objc.m
@@ -6,7 +6,7 @@
 @interface Foo
 @end 
 
-@interface Foo () {
+@implementation Foo {
     int _bar;
     int barWithoutPrefix;
     // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: invalid case style for objc ivar 'barWithoutPrefix' [readability-identifier-naming]