1 files changed, 53 insertions, 0 deletions
diff --git a/benchmarks/type_constraints.pl b/benchmarks/type_constraints.pl
new file mode 100644
index 0000000..e9b29f8
--- /dev/null
+++ b/benchmarks/type_constraints.pl
@@ -0,0 +1,53 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Benchmark qw[cmpthese];
+
+=pod
+
+This benchmark compares the overhead of a
+auto-created type constraint vs. none at
+all vs. a custom-created type.
+
+=cut
+
+{
+    package Foo;
+    use Moose;
+    use Moose::Util::TypeConstraints;
+
+    has 'baz' => (is => 'rw');
+    has 'bar' => (is => 'rw', isa => 'Foo');
+}
+
+{
+    package Bar;
+
+    sub new { bless {} => __PACKAGE__ }
+    sub bar {
+        my $self = shift;
+        $self->{bar} = shift if @_;
+        $self->{bar};
+    }
+}
+
+my $foo = Foo->new;
+my $bar = Bar->new;
+
+cmpthese(200_000,
+    {
+        'hand coded' => sub {
+            $bar->bar($bar);
+        },
+        'w/out_constraint' => sub {
+            $foo->baz($foo);
+        },
+        'w_constraint' => sub {
+            $foo->bar($foo);
+        },
+    }
+);
+
+1;
+\ No newline at end of file