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#!/usr/bin/env perl
use strict;
use warnings;
use Test::More;
use Test::Mouse;
my $lazy_run = 0;
do {
package Class;
use Mouse;
has lazy => (
is => 'rw',
lazy => 1,
default => sub { ++$lazy_run },
predicate => 'has_lazy',
clearer => 'clear_lazy',
);
};
can_ok(Class => 'clear_lazy');
with_immutable(sub{
$lazy_run = 0;
my $object = Class->new;
is($lazy_run, 0, "lazy attribute not yet initialized");
ok(!$object->has_lazy, "no lazy value yet");
is($lazy_run, 0, "lazy attribute not initialized by predicate");
$object->clear_lazy;
is($lazy_run, 0, "lazy attribute not initialized by clearer");
ok(!$object->has_lazy, "no lazy value yet");
is($lazy_run, 0, "lazy attribute not initialized by predicate");
is($object->lazy, 1, "lazy value");
is($lazy_run, 1, "lazy coderef invoked once");
ok($object->has_lazy, "lazy value now");
is($lazy_run, 1, "lazy coderef invoked once");
is($object->lazy, 1, "lazy value is cached");
is($lazy_run, 1, "lazy coderef invoked once");
$object->clear_lazy;
is($lazy_run, 1, "lazy coderef not invoked by clearer");
ok(!$object->has_lazy, "no value now, clearer removed it");
is($lazy_run, 1, "lazy attribute not initialized by predicate");
is($object->lazy, 2, "new lazy value; previous was cleared");
is($lazy_run, 2, "lazy coderef invoked twice");
my $object2 = Class->new(lazy => 'very');
is($lazy_run, 2, "lazy attribute not initialized when an argument is passed to the constructor");
ok($object2->has_lazy, "lazy value now");
is($lazy_run, 2, "lazy attribute not initialized when checked with predicate");
is($object2->lazy, 'very', 'value from the constructor');
is($lazy_run, 2, "lazy coderef not invoked, we already have a value");
$object2->clear_lazy;
is($lazy_run, 2, "lazy attribute not initialized by clearer");
ok(!$object2->has_lazy, "no more lazy value");
is($lazy_run, 2, "lazy attribute not initialized by predicate");
is($object2->lazy, 3, 'new lazy value');
is($lazy_run, 3, "lazy value re-created");
}, qw(Class));
done_testing;
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