t/02_MRO.t

   1 #!/usr/bin/perl
   2
   3 use strict;
   4 use warnings;
   5
   6 use Test::More tests => 7;
   7
   8 BEGIN {
   9     use_ok('Class::C3::XS');
  10 }
  11
  12 =pod
  13
  14 This example is take from: http://www.python.org/2.3/mro.html
  15
  16 "My first example"
  17 class O: pass
  18 class F(O): pass
  19 class E(O): pass
  20 class D(O): pass
  21 class C(D,F): pass
  22 class B(D,E): pass
  23 class A(B,C): pass
  24
  25
  26                           6
  27                          ---
  28 Level 3                 | O |                  (more general)
  29                       /  ---  \
  30                      /    |    \                      |
  31                     /     |     \                     |
  32                    /      |      \                    |
  33                   ---    ---    ---                   |
  34 Level 2        3 | D | 4| E |  | F | 5                |
  35                   ---    ---    ---                   |
  36                    \  \ _ /       |                   |
  37                     \    / \ _    |                   |
  38                      \  /      \  |                   |
  39                       ---      ---                    |
  40 Level 1            1 | B |    | C | 2                 |
  41                       ---      ---                    |
  42                         \      /                      |
  43                          \    /                      \ /
  44                            ---
  45 Level 0                 0 | A |                (more specialized)
  46                            ---
  47
  48 =cut
  49
  50 {
  51     package Test::O;
  52     our @ISA = qw//;
  53
  54     package Test::F;
  55     use base 'Test::O';
  56
  57     package Test::E;
  58     use base 'Test::O';
  59
  60     package Test::D;
  61     use base 'Test::O';
  62
  63     package Test::C;
  64     use base ('Test::D', 'Test::F');
  65
  66     package Test::B;
  67     use base ('Test::D', 'Test::E');
  68
  69     package Test::A;
  70     use base ('Test::B', 'Test::C');
  71 }
  72
  73 is_deeply(
  74     [ Class::C3::XS::calculateMRO('Test::F') ],
  75     [ qw(Test::F Test::O) ],
  76     '... got the right MRO for Test::F');
  77
  78 is_deeply(
  79     [ Class::C3::XS::calculateMRO('Test::E') ],
  80     [ qw(Test::E Test::O) ],
  81     '... got the right MRO for Test::E');
  82
  83 is_deeply(
  84     [ Class::C3::XS::calculateMRO('Test::D') ],
  85     [ qw(Test::D Test::O) ],
  86     '... got the right MRO for Test::D');
  87
  88 is_deeply(
  89     [ Class::C3::XS::calculateMRO('Test::C') ],
  90     [ qw(Test::C Test::D Test::F Test::O) ],
  91     '... got the right MRO for Test::C');
  92
  93 is_deeply(
  94     [ Class::C3::XS::calculateMRO('Test::B') ],
  95     [ qw(Test::B Test::D Test::E Test::O) ],
  96     '... got the right MRO for Test::B');
  97
  98 is_deeply(
  99     [ Class::C3::XS::calculateMRO('Test::A') ],
 100     [ qw(Test::A Test::B Test::C Test::D Test::E Test::F Test::O) ],
 101     '... got the right MRO for Test::A');
 102