test guard

1 files changed, 31 insertions, 0 deletions

diff --git a/t/012-guard.t b/t/012-guard.t
new file mode 100644
index 0000000..841be55
--- /dev/null
+++ b/t/012-guard.t
@@ -0,0 +1,31 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+use Test::More tests => 2;
+use Test::Exception;
+
+package Foo;
+use Moose;
+
+sub foo {
+    my $self = shift;
+    my ($arg) = shift;
+    die 'arg must be positive' if $arg < 0;
+    return $arg;
+}
+
+package Foo::Sub;
+use Moose;
+use MooseX::Mangle;
+extends 'Foo';
+
+guard foo => sub {
+    my $self = shift;
+    my ($arg) = @_;
+    return $arg >= 0;
+};
+
+package main;
+my $foosub = Foo::Sub->new;
+is($foosub->foo(2), 2, 'foo is called if guard succeeds');
+lives_and { is($foosub->foo(-2), undef) } 'foo returns undef on guard failure';