1 files changed, 95 insertions, 0 deletions
diff --git a/t/21-can.t b/t/21-can.t
new file mode 100644
index 0000000..5230c44
--- /dev/null
+++ b/t/21-can.t
@@ -0,0 +1,95 @@
+use strict;
+use warnings;
+
+use Params::Validate qw(validate);
+use Test::More;
+
+{
+    my @p = ( foo => 'ClassCan' );
+
+    eval { validate( @p, { foo => { can => 'cancan' } }, ); };
+
+    is( $@, q{} );
+
+    eval { validate( @p, { foo => { can => 'thingy' } }, ); };
+
+    like( $@, qr/does not have the method: 'thingy'/ );
+}
+
+{
+    my @p = ( foo => undef );
+    eval { validate( @p, { foo => { can => 'baz' } }, ); };
+
+    like( $@, qr/does not have the method: 'baz'/ );
+}
+
+{
+    my $object = bless {}, 'ClassCan';
+    my @p = ( foo => $object );
+
+    eval { validate( @p, { foo => { can => 'cancan' } }, ); };
+
+    is( $@, q{} );
+
+    eval { validate( @p, { foo => { can => 'thingy' } }, ); };
+
+    like( $@, qr/does not have the method: 'thingy'/ );
+}
+
+{
+    my @p = ( foo => 'SubClass' );
+
+    eval { validate( @p, { foo => { can => 'cancan' } }, ); };
+
+    is( $@, q{}, 'SubClass->can(cancan)' );
+
+    eval { validate( @p, { foo => { can => 'thingy' } }, ); };
+
+    like( $@, qr/does not have the method: 'thingy'/ );
+}
+
+{
+    my $object = bless {}, 'SubClass';
+    my @p = ( foo => $object );
+
+    eval { validate( @p, { foo => { can => 'cancan' } }, ); };
+
+    is( $@, q{}, 'SubClass object->can(cancan)' );
+
+    eval { validate( @p, { foo => { can => 'thingy' } }, ); };
+
+    like( $@, qr/does not have the method: 'thingy'/ );
+}
+
+{
+    my @p = ( foo => {} );
+    eval { validate( @p, { foo => { can => 'thingy' } }, ); };
+    like( $@, qr/does not have the method: 'thingy'/, 'unblessed ref ->can' );
+
+    @p = ( foo => 27 );
+    eval { validate( @p, { foo => { can => 'thingy' } }, ); };
+    like( $@, qr/does not have the method: 'thingy'/, 'number can' );
+
+    @p = ( foo => 'A String' );
+    eval { validate( @p, { foo => { can => 'thingy' } }, ); };
+    like( $@, qr/does not have the method: 'thingy'/, 'string can' );
+
+    @p = ( foo => undef );
+    eval { validate( @p, { foo => { can => 'thingy' } }, ); };
+    like( $@, qr/does not have the method: 'thingy'/, 'undef can' );
+}
+
+done_testing();
+
+package ClassCan;
+
+sub can {
+    return 1 if $_[1] eq 'cancan';
+    return 0;
+}
+
+sub thingy {1}
+
+package SubClass;
+
+use base 'ClassCan';