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1 // 980930 bkoz work with libstdc++v3

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 2, or (at your option)

9 // any later version.

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.

16 // You should have received a copy of the GNU General Public License along

17 // with this library; see the file COPYING. If not, write to the Free

18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,

19 // USA.

21 // 21.3.6.8 basic_string::compare

22 // int compare(const basic_string& str) const;

23 // int compare(size_type pos1, size_type n1, const basic_string& str) const;

24 // int compare(size_type pos1, size_type n1, const basic_string& str,

25 // size_type pos2, size_type n2) const;

26 // int compare(const charT* s) const;

27 // int compare(size_type pos1, size_type n1,

28 // const charT* s, size_type n2 = npos) const;

30 // NB compare should be thought of as a lexographical compare, ie how

31 // things would be sorted in a dictionary.

33 #include <string>

34 #include <testsuite_hooks.h>

enum want_value {lt=0, z=1, gt=2};

38 int

test_value(int result, want_value expected);

41 int

test_value(int result, want_value expected)

43 {

44 bool pass = false;

46 switch (expected) {

47 case lt:

    if (result < 0)

49 pass = true;

50 break;

51 case z:

52 if (!result)

53 pass = true;

54 break;

55 case gt:

    if (result > 0)

57 pass = true;

58 break;

59 default:

60 pass = false; //should not get here

61 }

62 VERIFY(pass);

63 return 0;

64 }

67 int

68 test01()

69 {

70 using namespace std;

72 string str_0("costa rica");

73 string str_1("costa marbella");

74 string str_2;

76 //sanity check

  test_value(strcmp("costa marbella", "costa rica"), lt); 

  test_value(strcmp("costa rica", "costa rica"), z);

  test_value(strcmp(str_1.data(), str_0.data()), lt);

  test_value(strcmp(str_0.data(), str_1.data()), gt);

  test_value(strncmp(str_1.data(), str_0.data(), 6), z);

  test_value(strncmp(str_1.data(), str_0.data(), 14), lt);

  test_value(memcmp(str_1.data(), str_0.data(), 6), z);

  test_value(memcmp(str_1.data(), str_0.data(), 14), lt);

  test_value(memcmp("costa marbella", "costa rica", 14), lt);

87 // int compare(const basic_string& str) const;

  test_value(str_0.compare(str_1), gt); //because r>m

  test_value(str_1.compare(str_0), lt); //because m<r

90 str_2 = str_0;

  test_value(str_2.compare(str_0), z);

92 str_2 = "cost";

  test_value(str_2.compare(str_0), lt);

94 str_2 = "costa ricans";

  test_value(str_2.compare(str_0), gt);

97 // int compare(size_type pos1, size_type n1, const basic_string& str) const;

  test_value(str_1.compare(0, 6, str_0), lt);

99 str_2 = "cost";

  test_value(str_1.compare(0, 4, str_2), z);

  test_value(str_1.compare(0, 5, str_2), gt);

102

103 // int compare(size_type pos1, size_type n1, const basic_string& str,

104 // size_type pos2, size_type n2) const;

  test_value(str_1.compare(0, 6, str_0, 0, 6), z);

  test_value(str_1.compare(0, 7, str_0, 0, 7), lt);

  test_value(str_0.compare(0, 7, str_1, 0, 7), gt);

108

109 // int compare(const charT* s) const;

  test_value(str_0.compare("costa marbella"), gt);

  test_value(str_1.compare("costa rica"), lt);

112 str_2 = str_0;

  test_value(str_2.compare("costa rica"), z);

  test_value(str_2.compare("cost"), gt);                        

  test_value(str_2.compare("costa ricans"), lt);           

116

117 // int compare(size_type pos, size_type n1, const charT* str,

118 // size_type n2 = npos) const;

  test_value(str_1.compare(0, 6, "costa rica", 0, 6), z); 

  test_value(str_1.compare(0, 7, "costa rica", 0, 7), lt); 

  test_value(str_0.compare(0, 7, "costa marbella", 0, 7), gt); 

123 return 0;

127 int

128 main()

129 {

130 test01();

131 return 0;

132 }