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#!./perl
use strict;
use warnings;
BEGIN {
unless (-d 'blib') {
chdir 't' if -d 't';
@INC = '../lib';
}
}
require q(./test.pl); plan(tests => 1);
require mro;
=pod
This example is take from: http://www.python.org/2.3/mro.html
"Serious order disagreement" # From Guido
class O: pass
class X(O): pass
class Y(O): pass
class A(X,Y): pass
class B(Y,X): pass
try:
class Z(A,B): pass #creates Z(A,B) in Python 2.2
except TypeError:
pass # Z(A,B) cannot be created in Python 2.3
=cut
{
package X;
package Y;
package XY;
our @ISA = ('X', 'Y');
package YX;
our @ISA = ('Y', 'X');
package Z;
our @ISA = ('XY', 'YX');
}
eval { mro::get_linear_isa('Z', 'c3') };
like($@, qr/^Inconsistent /, '... got the right error with an inconsistent hierarchy');
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