1#!/usr/bin/perl 2 3use strict; 4use warnings; 5 6use Test::More tests => 10; 7 8BEGIN { use_ok('Class::C3::XS') } 9 10=pod 11 12This tests the classic diamond inheritence pattern. 13 14 <A> 15 / \ 16<B> <C> 17 \ / 18 <D> 19 20=cut 21 22{ 23 package Diamond_A; 24 sub bar { 'Diamond_A::bar' } 25 sub baz { 'Diamond_A::baz' } 26} 27{ 28 package Diamond_B; 29 use base 'Diamond_A'; 30 sub baz { 'Diamond_B::baz => ' . (shift)->next::method() } 31} 32{ 33 package Diamond_C; 34 use base 'Diamond_A'; 35 sub foo { 'Diamond_C::foo' } 36 sub buz { 'Diamond_C::buz' } 37 38 sub woz { 'Diamond_C::woz' } 39 sub maybe { 'Diamond_C::maybe' } 40} 41{ 42 package Diamond_D; 43 use base ('Diamond_B', 'Diamond_C'); 44 sub foo { 'Diamond_D::foo => ' . (shift)->next::method() } 45 sub bar { 'Diamond_D::bar => ' . (shift)->next::method() } 46 sub buz { 'Diamond_D::buz => ' . (shift)->baz() } 47 sub fuz { 'Diamond_D::fuz => ' . (shift)->next::method() } 48 49 sub woz { 'Diamond_D::woz can => ' . ((shift)->next::can() ? 1 : 0) } 50 sub noz { 'Diamond_D::noz can => ' . ((shift)->next::can() ? 1 : 0) } 51 52 sub maybe { 'Diamond_D::maybe => ' . ((shift)->maybe::next::method() || 0) } 53 sub moybe { 'Diamond_D::moybe => ' . ((shift)->maybe::next::method() || 0) } 54 55} 56 57is(Diamond_D->foo, 'Diamond_D::foo => Diamond_C::foo', '... skipped B and went to C correctly'); 58is(Diamond_D->bar, 'Diamond_D::bar => Diamond_A::bar', '... skipped B & C and went to A correctly'); 59is(Diamond_D->baz, 'Diamond_B::baz => Diamond_A::baz', '... called B method, skipped C and went to A correctly'); 60is(Diamond_D->buz, 'Diamond_D::buz => Diamond_B::baz => Diamond_A::baz', '... called D method dispatched to , different method correctly'); 61eval { Diamond_D->fuz }; 62like($@, qr/^No next::method 'fuz' found for Diamond_D/, '... cannot re-dispatch to a method which is not there'); 63 64is(Diamond_D->woz, 'Diamond_D::woz can => 1', '... can re-dispatch figured out correctly'); 65is(Diamond_D->noz, 'Diamond_D::noz can => 0', '... cannot re-dispatch figured out correctly'); 66 67is(Diamond_D->maybe, 'Diamond_D::maybe => Diamond_C::maybe', '... redispatched D to C when it exists'); 68is(Diamond_D->moybe, 'Diamond_D::moybe => 0', '... quietly failed redispatch from D'); 69