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/stream.buffers/streambuf/streambuf.protected/streambuf.assign/swap.pass.cpp

@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// void swap(basic_streambuf& rhs);
+
+#include <streambuf>
+#include <cassert>
+
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    test() {}
+
+    void swap(test& t)
+    {
+        test old_this(*this);
+        test old_that(t);
+        base::swap(t);
+        assert(this->eback() == old_that.eback());
+        assert(this->gptr()  == old_that.gptr());
+        assert(this->egptr() == old_that.egptr());
+        assert(this->pbase() == old_that.pbase());
+        assert(this->pptr()  == old_that.pptr());
+        assert(this->epptr() == old_that.epptr());
+        assert(this->getloc() == old_that.getloc());
+
+        assert(t.eback() == old_this.eback());
+        assert(t.gptr()  == old_this.gptr());
+        assert(t.egptr() == old_this.egptr());
+        assert(t.pbase() == old_this.pbase());
+        assert(t.pptr()  == old_this.pptr());
+        assert(t.epptr() == old_this.epptr());
+        assert(t.getloc() == old_this.getloc());
+        return *this;
+    }
+
+    void setg(CharT* gbeg, CharT* gnext, CharT* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+    void setp(CharT* pbeg, CharT* pend)
+    {
+        base::setp(pbeg, pend);
+    }
+};
+
+int main()
+{
+    {
+        test<char> t;
+        test<char> t2;
+        swap(t2, t);
+    }
+    {
+        test<wchar_t> t;
+        test<wchar_t> t2;
+        swap(t2, t);
+    }
+    {
+        char g1, g2, g3, p1, p3;
+        test<char> t;
+        t.setg(&g1, &g2, &g3);
+        t.setp(&p1, &p3);
+        test<char> t2;
+        swap(t2, t);
+    }
+    {
+        wchar_t g1, g2, g3, p1, p3;
+        test<wchar_t> t;
+        t.setg(&g1, &g2, &g3);
+        t.setp(&p1, &p3);
+        test<wchar_t> t2;
+        swap(t2, t);
+    }
+    std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+    {
+        test<char> t;
+        test<char> t2;
+        swap(t2, t);
+    }
+    {
+        test<wchar_t> t;
+        test<wchar_t> t2;
+        swap(t2, t);
+    }
+}