Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_filebuf / sputbackc / char / 1-io.cc

diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/sputbackc/char/1-io.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/sputbackc/char/1-io.cc
new file mode 100644 (file)
index 0000000..7269473
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/sputbackc/char/1-io.cc
@@ -0,0 +1,103 @@
+// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
+
+// Copyright (C) 2001, 2002, 2003, 2009 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 3, 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 COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.8.1.4 Overridden virtual functions
+
+// { dg-require-fileio "" }
+
+#include <fstream>
+#include <testsuite_hooks.h>
+#include <testsuite_io.h>
+
+// @require@ %-*.tst %-*.txt
+// @diff@ %-*.tst %*.txt
+
+const char name_01[] = "tmp_sputbackc_1io.tst"; // empty file, need to create
+
+void test01() 
+{
+  using namespace std;
+  using namespace __gnu_test;
+
+  typedef filebuf::int_type    int_type;
+  typedef filebuf::traits_type         traits_type;
+  typedef size_t                       size_type;
+
+  bool test __attribute__((unused)) = true;
+  streamsize                   strmsz_1, strmsz_2;
+  int_type                     c1, c2, c3;
+
+  // int_type sputbackc(char_type c)
+  // if in_cur not avail || ! traits::eq(c, gptr() [-1]), return pbfail
+  // otherwise decrements in_cur and returns *gptr()
+
+  // in | out
+  {
+    constraint_filebuf fb_01; 
+    fb_01.open(name_01, ios_base::out | ios_base::in | ios_base::trunc);
+    VERIFY( !fb_01.write_position() );
+    VERIFY( !fb_01.read_position() );
+    strmsz_1 = fb_01.sputn("racadabras", 10);//"abracadabras or what?"
+    strmsz_2 = fb_01.sputn(", i wanna reach out and", 10);
+    fb_01.pubseekoff(0, std::ios_base::cur);
+    c1 = fb_01.sgetc(); // -1
+    c2 = fb_01.sputbackc('z');
+    strmsz_2 = fb_01.in_avail();
+    c3 = fb_01.sgetc();
+    VERIFY( c3 == c2 );
+    VERIFY( c1 != c3 );
+    VERIFY( 1 == strmsz_2 );
+    //test for _in_cur == _in_beg
+    // fb_01._M_out_beg = "bd23456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZracada" etc
+    fb_01.pubseekoff(10, std::ios_base::beg);
+    fb_01.sputc('m');
+    fb_01.pubseekoff(0, std::ios_base::cur);
+    strmsz_1 = fb_01.in_avail(); 
+    c1 = fb_01.sgetc(); 
+    fb_01.snextc();
+    c2 = fb_01.sputbackc('z');  
+    strmsz_2 = fb_01.in_avail(); 
+    c3 = fb_01.sgetc();  
+    VERIFY( c1 != c2 );
+    VERIFY( c3 == c2 );
+    VERIFY( c1 != c3 );
+    VERIFY( c2 == 'z' );
+    // test for replacing char with identical one
+    fb_01.snextc();
+    fb_01.pubseekoff(0, std::ios_base::cur);
+    fb_01.sputc('u');
+    fb_01.sputc('v');
+    fb_01.sputc('a');
+    fb_01.pubseekoff(0, std::ios_base::end);
+    strmsz_1 = fb_01.in_avail();
+    c2 = fb_01.sputbackc('a');
+    strmsz_2 = fb_01.in_avail();
+    c3 = fb_01.sgetc();
+    VERIFY( c3 == c2 );
+    VERIFY( strmsz_1 + 1 == strmsz_2 );
+    VERIFY( !fb_01.write_position() );
+    VERIFY( fb_01.read_position() );
+  }
+}
+
+int main() 
+{
+  test01();
+  return 0;
+}