vendor/libc++/libc++-release_370-r246257

1 files changed, 48 insertions, 0 deletions

diff --git a/test/std/strings/basic.string/string.iterators/begin.pass.cpp b/test/std/strings/basic.string/string.iterators/begin.pass.cpp
new file mode 100644
index 0000000000000..55f2eb30f80a2
--- /dev/null
+++ b/test/std/strings/basic.string/string.iterators/begin.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+//       iterator begin();
+// const_iterator begin() const;
+
+#include <string>
+#include <cassert>
+
+#include "min_allocator.h"
+
+template <class S>
+void
+test(S s)
+{
+    const S& cs = s;
+    typename S::iterator b = s.begin();
+    typename S::const_iterator cb = cs.begin();
+    if (!s.empty())
+    {
+        assert(*b == s[0]);
+    }
+    assert(b == cb);
+}
+
+int main()
+{
+    {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+    }
+#if __cplusplus >= 201103L
+    {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+    }
+#endif
+}