string.tcc (string::rfind): Fix.

2000-06-13  Brent Verner <brent@rcfile.org>

	* bits/string.tcc (string::rfind): Fix.
	* testsuite/21_strings/rfind.cc: New file.

From-SVN: r34718

libstdc++-v3/testsuite/21_strings/rfind.cc

+// 2000-06-22 -=dbv=-  (shamelessy copied from bkoz' find.cc)
+
+// Copyright (C) 2000 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.
+
+#include <string>
+#include <stdexcept>
+#ifdef DEBUG_ASSERT
+#include <assert.h>
+#endif
+
+// 21.3.6.2 basic_string rfind
+bool test01(void)
+{
+  bool test = true;
+  typedef std::string::size_type csize_type;
+  typedef std::string::const_reference cref;
+  typedef std::string::reference ref;
+  csize_type npos = std::string::npos;
+  csize_type csz01, csz02;
+
+  const char str_lit01[] = "mave";
+  const std::string str01("mavericks, santa cruz");
+  std::string str02(str_lit01);
+  std::string str03("s, s");
+  std::string str04;
+
+  // size_type rfind(const string&, size_type pos = 0) const;
+  csz01 = str01.rfind(str01);
+  test &= csz01 == 0;
+  csz01 = str01.rfind(str01, 4);
+  test &= csz01 == 0;
+  csz01 = str01.rfind(str02,3);
+  test &= csz01 == 0;
+  csz01 = str01.rfind(str02);
+  test &= csz01 == 0;
+  csz01 = str01.rfind(str03);
+  test &= csz01 == 8;
+  csz01 = str01.rfind(str03, 3);
+  test &= csz01 == npos;
+  csz01 = str01.rfind(str03, 12);
+  test &= csz01 == 8;
+
+  // An empty string consists of no characters
+  // therefore it should be found at every point in a string,
+  // except beyond the end
+  csz01 = str01.rfind(str04, 0);
+  test &= csz01 == 0;
+  csz01 = str01.rfind(str04, 5);
+  test &= csz01 == 5;
+  csz01 = str01.rfind(str04, str01.size());
+  test &= csz01 == str01.size();
+  csz01 = str01.rfind(str04, str01.size()+1);
+  test &= csz01 == str01.size();
+
+  // size_type rfind(const char* s, size_type pos, size_type n) const;
+  csz01 = str01.rfind(str_lit01, 0, 3);
+  test &= csz01 == 0;
+  csz01 = str01.rfind(str_lit01, 3, 0);
+  test &= csz01 == 3;
+
+  // size_type rfind(const char* s, size_type pos = 0) const;
+  csz01 = str01.rfind(str_lit01);
+  test &= csz01 == 0;
+  csz01 = str01.rfind(str_lit01, 3);
+  test &= csz01 == 0;
+
+  // size_type rfind(char c, size_type pos = 0) const;
+  csz01 = str01.rfind('z');
+  csz02 = str01.size() - 1;
+  test &= csz01 == csz02;
+  csz01 = str01.rfind('/');
+  test &= csz01 == npos;
+
+#ifdef DEBUG_ASSERT
+  assert(test);
+#endif
+  return test;
+}
+
+// 21.3.6.4 basic_string::find_last_of
+bool test02()
+{
+  bool test = true;
+
+  // test find_last_of
+
+#ifdef DEBUG_ASSERT
+  assert(test);
+#endif
+  return test;
+}
+
+// 21.3.6.6 basic_string::find_last_not_of
+bool test03()
+{
+  bool test = true;
+
+  // test find_last_not_of
+
+#ifdef DEBUG_ASSERT
+  assert(test);
+#endif
+  return test;
+}
+int main()
+{
+  test01();
+  test02();
+  test03();
+}