| 1 | #!./perl |
| 2 | |
| 3 | BEGIN { |
| 4 | unless (-d 'blib') { |
| 5 | chdir 't' if -d 't'; |
| 6 | @INC = '../lib'; |
| 7 | } |
| 8 | } |
| 9 | |
| 10 | use strict; |
| 11 | use warnings; |
| 12 | |
| 13 | use utf8; |
| 14 | use open qw( :utf8 :std ); |
| 15 | |
| 16 | require q(./test.pl); plan(tests => 1); |
| 17 | |
| 18 | require mro; |
| 19 | |
| 20 | =pod |
| 21 | |
| 22 | This example is take from: http://www.python.org/2.3/mro.html |
| 23 | |
| 24 | "Serious order disagreement" # From Guido |
| 25 | class O: pass |
| 26 | class X(O): pass |
| 27 | class Y(O): pass |
| 28 | class A(X,Y): pass |
| 29 | class B(Y,X): pass |
| 30 | try: |
| 31 | class Z(A,B): pass #creates Z(A,B) in Python 2.2 |
| 32 | except TypeError: |
| 33 | pass # Z(A,B) cannot be created in Python 2.3 |
| 34 | |
| 35 | =cut |
| 36 | |
| 37 | { |
| 38 | package ẋ; |
| 39 | |
| 40 | package Ƴ; |
| 41 | |
| 42 | package ẋƳ; |
| 43 | our @ISA = ('ẋ', 'Ƴ'); |
| 44 | |
| 45 | package Ƴẋ; |
| 46 | our @ISA = ('Ƴ', 'ẋ'); |
| 47 | |
| 48 | package Ȥ; |
| 49 | our @ISA = ('ẋƳ', 'Ƴẋ'); |
| 50 | } |
| 51 | |
| 52 | eval { mro::get_linear_isa('Ȥ', 'c3') }; |
| 53 | like($@, qr/^Inconsistent /, '... got the right error with an inconsistent hierarchy'); |