1 files changed, 32 insertions, 0 deletions

diff --git a/libcxx/test/strings/basic.string/string.modifiers/string::append/push_back.pass.cpp b/libcxx/test/strings/basic.string/string.modifiers/string::append/push_back.pass.cpp
new file mode 100644
index 00000000000..da5604ed94d
--- /dev/null
+++ b/libcxx/test/strings/basic.string/string.modifiers/string::append/push_back.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// ΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void push_back(charT c)
+
+#include <string>
+#include <cassert>
+
+template <class S>
+void
+test(S s, typename S::value_type c, S expected)
+{
+    s.push_back(c);
+    assert(s.__invariants());
+    assert(s == expected);
+}
+
+int main()
+{
+    typedef std::string S;
+    test(S(), 'a', S(1, 'a'));
+    test(S("12345"), 'a', S("12345a"));
+    test(S("12345678901234567890"), 'a', S("12345678901234567890a"));
+}