libstdc++-v3/testsuite/21_strings/basic_string/cons/char/1.cc

   1 // 1999-06-04 bkoz
   2
   3 // Copyright (C) 1999-2016 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 21.3.1 basic_string constructors.
  21
  22 #include <new>
  23 #include <string>
  24 #include <stdexcept>
  25 #include <testsuite_hooks.h>
  26
  27 void test01(void)
  28 {
  29   bool test __attribute__((unused)) = true;
  30   typedef std::string::size_type csize_type;
  31   typedef std::string::iterator citerator;
  32   csize_type npos = std::string::npos;
  33   csize_type csz01;
  34
  35   const char str_lit01[] = "rodeo beach, marin";
  36   const std::string str01(str_lit01);
  37   const std::string str02("baker beach, san francisco");
  38
  39   // basic_string(const string&, size_type pos = 0, siz_type n = npos, alloc)
  40   csz01 = str01.size();
  41   try {
  42     std::string str03(str01, csz01 + 1);
  43     VERIFY( false );
  44   }
  45   catch(std::out_of_range& fail) {
  46     VERIFY( true );
  47   }
  48   catch(...) {
  49     VERIFY( false );
  50   }
  51
  52   try {
  53     std::string str03(str01, csz01);
  54     VERIFY( str03.size() == 0 );
  55     VERIFY( str03.size() <= str03.capacity() );
  56   }
  57   catch(...) {
  58     VERIFY( false );
  59   }
  60
  61   // basic_string(const char* s, size_type n, alloc)
  62   csz01 = str01.max_size();
  63   // NB: As strlen(str_lit01) != csz01, this test is undefined. It
  64   // should not crash, but what gets constructed is a bit arbitrary.
  65   try {
  66     std::string str03(str_lit01, csz01 + 1);
  67     VERIFY( true );
  68   }
  69   catch(std::length_error& fail) {
  70     VERIFY( true );
  71   }
  72   catch(...) {
  73     VERIFY( false );
  74   }
  75
  76   // NB: As strlen(str_lit01) != csz01, this test is undefined. It
  77   // should not crash, but what gets constructed is a bit arbitrary.
  78   // The "maverick's" of all string objects.
  79   try {
  80     std::string str04(str_lit01, npos);
  81     VERIFY( true );
  82   }
  83   catch(std::length_error& fail) {
  84     VERIFY( true );
  85   }
  86   catch(...) {
  87     VERIFY( false );
  88   }
  89
  90   // Build a maxsize - 1 lengthed string consisting of all A's
  91   try {
  92     std::string str03(csz01 - 1, 'A');
  93     VERIFY( str03.size() == csz01 - 1 );
  94     VERIFY( str03.size() <= str03.capacity() );
  95   }
  96   // NB: bad_alloc is regrettable but entirely kosher for
  97   // out-of-memory situations.
  98   catch(std::bad_alloc& fail) {
  99     VERIFY( true );
 100   }
 101   catch(...) {
 102     VERIFY( false );
 103   }
 104
 105   // basic_string(const char* s, const allocator& a = allocator())
 106   std::string str04(str_lit01);
 107   VERIFY( str01 == str04 );
 108
 109
 110   // basic_string(size_type n, char c, const allocator& a = allocator())
 111   csz01 = str01.max_size();
 112   try {
 113     std::string str03(csz01 + 1, 'z');
 114     VERIFY( false );
 115   }
 116   catch(std::length_error& fail) {
 117     VERIFY( true );
 118   }
 119   catch(...) {
 120     VERIFY( false );
 121   }
 122
 123   try {
 124     std::string str04(npos, 'b'); // the "maverick's" of all string objects.
 125     VERIFY( false );
 126   }
 127   catch(std::length_error& fail) {
 128     VERIFY( true );
 129   }
 130   catch(...) {
 131     VERIFY( false );
 132   }
 133
 134   try {
 135     std::string str03(csz01 - 1, 'z');
 136     VERIFY( str03.size() != 0 );
 137     VERIFY( str03.size() <= str03.capacity() );
 138   }
 139   // NB: bad_alloc is regrettable but entirely kosher for
 140   // out-of-memory situations.
 141   catch(std::bad_alloc& fail) {
 142     VERIFY( true );
 143   }
 144   catch(...) {
 145     VERIFY( false );
 146   }
 147
 148
 149   // template<typename _InputIter>
 150   //   basic_string(_InputIter begin, _InputIter end, const allocator& a)
 151   std::string str06(str01.begin(), str01.end());
 152   VERIFY( str06 == str01 );
 153 }
 154
 155 int main()
 156 {
 157   __gnu_test::set_memory_limits();
 158   test01();
 159   return 0;
 160 }