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/iostreams.base/ios/basic.ios.cons/ctor_streambuf.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.
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// explicit basic_ios(basic_streambuf<charT,traits>* sb);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+int main()
+{
+    {
+        std::streambuf* sb = 0;
+        std::basic_ios<char> ios(sb);
+        assert(ios.rdbuf() == sb);
+        assert(ios.tie() == 0);
+        assert(ios.rdstate() == std::ios::badbit);
+        assert(ios.exceptions() == std::ios::goodbit);
+        assert(ios.flags() == (std::ios::skipws | std::ios::dec));
+        assert(ios.width() == 0);
+        assert(ios.precision() == 6);
+        assert(ios.fill() == ' ');
+        assert(ios.getloc() == std::locale());
+    }
+    {
+        std::streambuf* sb = (std::streambuf*)1;
+        std::basic_ios<char> ios(sb);
+        assert(ios.rdbuf() == sb);
+        assert(ios.tie() == 0);
+        assert(ios.rdstate() == std::ios::goodbit);
+        assert(ios.exceptions() == std::ios::goodbit);
+        assert(ios.flags() == (std::ios::skipws | std::ios::dec));
+        assert(ios.width() == 0);
+        assert(ios.precision() == 6);
+        assert(ios.fill() == ' ');
+        assert(ios.getloc() == std::locale());
+    }
+}