diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 45c8e81..ed1e6ed 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -2602,6 +2602,11 @@
   verifyGoogleFormat("A = new SomeType* [Length];");
 }
 
+TEST_F(FormatTest, UnderstandsEllipsis) {
+  verifyFormat("int printf(const char *fmt, ...);");
+  verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }");
+}
+
 TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) {
   EXPECT_EQ("int *a;\n"
             "int *a;\n"