1 files changed, 11 insertions, 1 deletions
diff --git a/test/common/StringTest.cpp b/test/common/StringTest.cpp
index 1200a60b..a0895af9 100644
--- a/test/common/StringTest.cpp
+++ b/test/common/StringTest.cpp
@@ -2,8 +2,18 @@
 
 #include <gtest/gtest.h>
 
+TEST(String, Append) {
+  using cru::String;
+
+  String s;
+  s.append(u"ha");
+  s.append(s);
+  ASSERT_EQ(s, String(u"haha"));
+}
+
 TEST(String, Format) {
   using cru::Format;
+  using cru::String;
 
-  ASSERT_EQ(Format(u"{} + {} = {}", 123, 321, 444), u"123 + 321 = 444");
+  ASSERT_EQ(Format(u"{} + {} = {}", 123, 321, 444), String(u"123 + 321 = 444"));
 }