+// 1999-06-03 bkoz
+
+// Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005, 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/>.
+
+// 21.1.1 Characher traits requirements
+
+#include <string>
+#include <testsuite_hooks.h>
+
+void test02(void)
+{
+ bool test __attribute__((unused)) = true;
+ const std::wstring str_01(L"zuma beach");
+ const std::wstring str_02(L"montara and ocean beach");
+
+ // 21.1.1 character traits requirements
+
+ // Key for decoding what function signatures really mean:
+ // X == char_traits<_CharT>
+ // [c,d] == _CharT
+ // [p,q] == const _CharT*
+ // s == _CharT*
+ // [n,i,j] == size_t
+ // f == X::int_type
+ // pos == X::pos_type
+ // state == X::state_type
+
+ // void X::assign(wchar_t c, wchar_t d)
+ // assigns c = d;
+ wchar_t c1 = L'z';
+ wchar_t c2 = L'u';
+ VERIFY( c1 != c2 );
+ std::char_traits<wchar_t>::assign(c1,c2);
+ VERIFY( c1 == L'u' );
+
+ // char* X::move(char* s, const char* p, size_t n)
+ // for each i in [0,n) performs X::assign(s[i], p[i]). Copies
+ // correctly even where p is in [s, s + n), and yields s.
+ wchar_t array1[] = {L'z', L'u', L'm', L'a', L' ', L'b', L'e', L'a', L'c', L'h', 0};
+ const wchar_t str_lit1[] = L"montara and ocean beach";
+ const wchar_t str_lit2[] = L"boracay, philippines";
+ const int len1 = sizeof(str_lit1)/sizeof(wchar_t);
+ const int len2 = sizeof(str_lit2)/sizeof(wchar_t);
+ wchar_t array2[len1 + len2 - 1]; // two terminating chars
+ std::char_traits<wchar_t>::copy(array2, str_lit2, len2);
+
+ VERIFY( str_lit1[0] == 'm' );
+ c1 = array2[0];
+ c2 = str_lit1[0];
+ wchar_t c3 = array2[1];
+ wchar_t c4 = str_lit1[1];
+ std::char_traits<wchar_t>::move(array2, str_lit1, 0);
+ VERIFY( array2[0] == c1 );
+ VERIFY( str_lit1[0] == c2 );
+ std::char_traits<wchar_t>::move(array2, str_lit1, 1);
+ VERIFY( array2[0] == c2 );
+ VERIFY( str_lit1[0] == c2 );
+ VERIFY( array2[1] == c3 );
+ VERIFY( str_lit1[1] == c4 );
+ std::char_traits<wchar_t>::move(array2, str_lit1, 2);
+ VERIFY( array2[0] == c2 );
+ VERIFY( str_lit1[0] == c2 );
+ VERIFY( array2[1] == c4 );
+ VERIFY( str_lit1[1] == c4 );
+
+ wchar_t* pc1 = array1 + 1;
+ c1 = pc1[0];
+ c2 = array1[0];
+ VERIFY( c1 != c2 );
+ wchar_t* pc2 = std::char_traits<wchar_t>::move(array1, pc1, 0);
+ c3 = pc1[0];
+ c4 = array1[0];
+ VERIFY( c1 == c3 );
+ VERIFY( c2 == c4 );
+ VERIFY( pc2 == array1 );
+
+ c1 = pc1[0];
+ c2 = array1[0];
+ wchar_t* pc3 = pc1;
+ pc2 = std::char_traits<wchar_t>::move(array1, pc1, 10);
+ c3 = pc1[0];
+ c4 = array1[0];
+ VERIFY( c1 != c3 ); // underlying wchar_t array changed.
+ VERIFY( c4 != c3 );
+ VERIFY( pc2 == array1 );
+ VERIFY( pc3 == pc1 ); // but pointers o-tay
+ c1 = *(str_01.data());
+ c2 = array1[0];
+ VERIFY( c1 != c2 );
+}
+
+int main()
+{
+ test02();
+ return 0;
+}