[Patch] New tests for filebuf::close()

[Paolo Carlini <pcarlini at unitus dot it>]

Hi all, hi Benjamin,

so I have checked, and 27.8.1.1,3 is already tested on
a freshly open filebuf as part of the various testfiles
for sgetc, snextc, and co.

What is really missing (and would have caught my error
of a couple of weeks ago) is a test for close() itself and
its effect on a successive attempt to do I/O.

Tested x86-linux. Ok with you, Benjamin?

Paolo.

/////////
2003-05-18  Paolo Carlini  <pcarlini@unitus.it>

	* testsuite/27_io/basic_filebuf/close/char/4.cc: New file, testing
	that upon filebuf::close() 27.8.1.1,3 is enforced.

diff -urN libstdc++-v3-orig/testsuite/27_io/basic_filebuf/close/char/4.cc libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/4.cc
--- libstdc++-v3-orig/testsuite/27_io/basic_filebuf/close/char/4.cc	1970-01-01 01:00:00.000000000 +0100
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/4.cc	2003-05-18 15:34:49.000000000 +0200
@@ -0,0 +1,73 @@
+// 2003-05-18  Paolo Carlini  <pcarlini@unitus.it>
+
+// Copyright (C) 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.8.1.3 filebuf member functions
+// @require@ %-*.tst %-*.txt
+// @diff@ %-*.tst %-*.txt
+
+// Test that upon filebuf::close() 27.8.1.1,3 is enforced.
+
+#include <fstream>
+#include <testsuite_hooks.h>
+
+const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
+const char name_02[] = "filebuf_virtuals-2.txt"; // empty file, need to create
+
+void test_04()
+{
+  typedef std::filebuf::int_type 	int_type;
+  typedef std::filebuf::traits_type 	traits_type;
+
+  bool test = true;
+
+  std::filebuf fb_01, fb_02;
+  char buffer[] = "xxxxxxxxxx";
+
+  // 'in'
+  fb_01.open(name_01, std::ios_base::in);
+  VERIFY( fb_01.sgetc() != traits_type::eof() );
+  VERIFY( fb_01.sbumpc() != traits_type::eof() );
+  VERIFY( fb_01.snextc() != traits_type::eof() );
+  VERIFY( fb_01.sgetn(buffer, sizeof(buffer)) == sizeof(buffer) );
+
+  fb_01.close();
+
+  VERIFY( fb_01.sgetc() == traits_type::eof() );
+  VERIFY( fb_01.sbumpc() == traits_type::eof() );
+  VERIFY( fb_01.snextc() == traits_type::eof() );
+  VERIFY( fb_01.sgetn(buffer, sizeof(buffer)) == 0 );
+
+  // 'out'
+  fb_02.open(name_02, std::ios_base::out);
+  VERIFY( fb_02.sputc('T') != traits_type::eof() );
+  VERIFY( fb_02.sputn(buffer, sizeof(buffer)) == sizeof(buffer) );
+
+  fb_02.close();
+  
+  VERIFY( fb_02.sputc('T') == traits_type::eof() );
+  VERIFY( fb_01.sputn(buffer, sizeof(buffer)) == 0 );
+}
+
+int
+main()
+{
+  test_04();
+  return 0;
+}