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/input.output/iostream.format/input.streams/istream.unformatted/sync.pass.cpp

@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// int sync();
+
+#include <istream>
+#include <cassert>
+
+int sync_called = 0;
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+
+protected:
+    int sync()
+    {
+        ++sync_called;
+        return 5;
+    }
+};
+
+int main()
+{
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        assert(is.sync() == 0);
+        assert(sync_called == 1);
+    }
+    {
+        testbuf<wchar_t> sb(L" 123456789");
+        std::wistream is(&sb);
+        assert(is.sync() == 0);
+        assert(sync_called == 2);
+    }
+}