Formatter: Add another ObjC literal test.

(From http://clang.llvm.org/docs/ObjectiveCLiterals.html.)

llvm-svn: 174841
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 6d434ca..3760a3b 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -2559,6 +2559,8 @@
   verifyFormat("NSLog(@\"%@\", @{ @1 : @2, @2 : @3 }[@1]);");
   verifyFormat(
       "NSDictionary *masses = @{ @\"H\" : @1.0078, @\"He\" : @4.0026 };");
+  verifyFormat(
+      "NSDictionary *settings = @{ AVEncoderKey : @(AVAudioQualityMax) };");
   
   // FIXME: Nested and multi-line array and dictionary literals need more work.
 }