Move test into test/std subdirectory.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.derived/message.pass.cpp

@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// virtual string message(int ev) const = 0;
+
+#include <system_error>
+#include <cassert>
+#include <string>
+
+#include <stdio.h>
+
+int main()
+{
+    const std::error_category& e_cat1 = std::generic_category();
+    const std::error_category& e_cat2 = std::system_category();
+    std::string m1 = e_cat1.message(5);
+    std::string m2 = e_cat2.message(5);
+    std::string m3 = e_cat2.message(6);
+    assert(!m1.empty());
+    assert(!m2.empty());
+    assert(!m3.empty());
+    assert(m1 == m2);
+    assert(m1 != m3);
+}