Formatter: Add a test for bitfields.

They work fine, but this fifth use of colons (after labels, in ?:,
in initalizer lists in constructors, in objc method expressions, and in
bitfields) wasn't covered by tests yet.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172377 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index a8417f1..b05d19c 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -369,6 +369,13 @@
                "};");
 }
 
+TEST_F(FormatTest, FormatsBitfields) {
+  verifyFormat("struct Bitfields {\n"
+               "  unsigned sClass : 8;\n"
+               "  unsigned ValueKind : 2;\n"
+               "};");
+}
+
 TEST_F(FormatTest, FormatsNamespaces) {
   verifyFormat("namespace some_namespace {\n"
                "class A {};\n"