6 use Test::More tests => 10;
13 use Mouse::Util::TypeConstraints;
17 => where { $_ =~ m{^[mf]$}s };
19 has 'gender' => ( is => 'ro', isa => 'Gender', required => 1 );
21 has 'mother' => ( is => 'ro', isa => 'Human' );
22 has 'father' => ( is => 'ro', isa => 'Human' );
24 use overload '+' => \&_overload_add, fallback => 1;
27 my ( $one, $two ) = @_;
29 die('Only male and female humans may create children')
30 if ( $one->gender() eq $two->gender() );
32 my ( $mother, $father )
33 = ( $one->gender eq 'f' ? ( $one, $two ) : ( $two, $one ) );
36 $gender = 'm' if ( rand() >= 0.5 );
40 eye_color => ( $one->eye_color() + $two->eye_color() ),
46 # use List::MoreUtils 'zip'
47 # code taken from List::MoreUtils
48 sub zip (\@\@;\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@) {
50 $max < $#$_ && ( $max = $#$_ ) for @_;
52 map { my $ix = $_; map $_->[$ix], @_; } 0 .. $max;
56 coerce 'Human::EyeColor'
58 => via { my @genes = qw( bey2_1 bey2_2 gey_1 gey_2 );
59 return Human::EyeColor->new( zip( @genes, @{$_} ) ); };
63 isa => 'Human::EyeColor',
71 package Human::Gene::bey2;
74 use Mouse::Util::TypeConstraints;
76 type 'bey2_color' => where { $_ =~ m{^(?:brown|blue)$} };
78 has 'color' => ( is => 'ro', isa => 'bey2_color' );
82 package Human::Gene::gey;
85 use Mouse::Util::TypeConstraints;
87 type 'gey_color' => where { $_ =~ m{^(?:green|blue)$} };
89 has 'color' => ( is => 'ro', isa => 'gey_color' );
93 package Human::EyeColor;
96 use Mouse::Util::TypeConstraints;
98 coerce 'Human::Gene::bey2'
100 => via { Human::Gene::bey2->new( color => $_ ) };
102 coerce 'Human::Gene::gey'
104 => via { Human::Gene::gey->new( color => $_ ) };
106 has [qw( bey2_1 bey2_2 )] =>
107 ( is => 'ro', isa => 'Human::Gene::bey2', coerce => 1 );
109 has [qw( gey_1 gey_2 )] =>
110 ( is => 'ro', isa => 'Human::Gene::gey', coerce => 1 );
116 if ( $self->bey2_1->color() eq 'brown'
117 or $self->bey2_2->color() eq 'brown' );
120 if ( $self->gey_1->color() eq 'green'
121 or $self->gey_2->color() eq 'green' );
126 use overload '""' => \&color, fallback => 1;
128 use overload '+' => \&_overload_add, fallback => 1;
131 my ( $one, $two ) = @_;
133 my $one_bey2 = 'bey2_' . _rand2();
134 my $two_bey2 = 'bey2_' . _rand2();
136 my $one_gey = 'gey_' . _rand2();
137 my $two_gey = 'gey_' . _rand2();
139 return Human::EyeColor->new(
140 bey2_1 => $one->$one_bey2->color(),
141 bey2_2 => $two->$two_bey2->color(),
142 gey_1 => $one->$one_gey->color(),
143 gey_2 => $two->$two_gey->color(),
148 return 1 + int( rand(2) );
152 my $gene_color_sets = [
153 [ qw( blue blue blue blue ) => 'blue' ],
154 [ qw( blue blue green blue ) => 'green' ],
155 [ qw( blue blue blue green ) => 'green' ],
156 [ qw( blue blue green green ) => 'green' ],
157 [ qw( brown blue blue blue ) => 'brown' ],
158 [ qw( brown brown green green ) => 'brown' ],
159 [ qw( blue brown green blue ) => 'brown' ],
162 foreach my $set (@$gene_color_sets) {
163 my $expected_color = pop(@$set);
165 my $person = Human->new(
171 $person->eye_color(),
183 [qw( blue blue blue blue )],
184 [qw( blue blue blue blue )] => 'blue'
187 [qw( blue blue blue blue )],
188 [qw( brown brown green blue )] => 'brown'
191 [qw( blue blue green green )],
192 [qw( blue blue green green )] => 'green'
196 foreach my $set (@$parent_sets) {
197 my $expected_color = pop(@$set);
199 my $mother = Human->new(
201 eye_color => shift(@$set),
204 my $father = Human->new(
206 eye_color => shift(@$set),
209 my $child = $mother + $father;
215 . $mother->eye_color()
217 . $father->eye_color()
223 # Hmm, not sure how to test for random selection of genes since
224 # I could theoretically run an infinite number of iterations and
225 # never find proof that a child has inherited a particular gene.
227 # AUTHOR: Aran Clary Deltac <bluefeet@cpan.org>