Added test with characters using four bytes in UTF-8 representation.

llvm-svn: 183315
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index a959bcb..eb9b8f3 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -4946,6 +4946,10 @@
             " * 九 十\n"
             " */",
             format("/* 一二三 四五六七 八  九 十 */", getLLVMStyleWithColumns(6)));
+  EXPECT_EQ("/* 𝓣𝓮𝓼𝓽 𝔣𝔬𝔲𝔯\n"
+            " * 𝕓𝕪𝕥𝕖\n"
+            " * 𝖀𝕿𝕱-𝟠 */",
+            format("/* 𝓣𝓮𝓼𝓽 𝔣𝔬𝔲𝔯 𝕓𝕪𝕥𝕖 𝖀𝕿𝕱-𝟠 */", getLLVMStyleWithColumns(12)));
 }
 
 } // end namespace tooling