Add quantity and count methods to Nitesi::Cart.

lib/Nitesi/Cart.pm

@@ -289,6 +289,38 @@ sub clear {
     return;
 }
 
+=head2 quantity
+
+Returns the sum of the quantity of all items in the shopping cart,
+which is commonly used as number of items.
+
+    print 'Items in your cart: ', $cart->quantity, "\n";
+
+=cut
+
+sub quantity {
+    my $self = shift;
+    my $qty = 0;
+
+    for my $item (@{$self->{items}}) {
+	$qty += $item->{quantity};
+    }
+
+    return $qty;
+}
+
+=head2 count
+
+Returns the number of different items in the shopping cart.
+
+=cut
+
+sub count {
+    my $self = shift;
+
+    return scalar(@{$self->{items}});
+}
+
 =head2 apply_cost 
 
 Apply cost to cart.

t/003_cart.t

@@ -5,7 +5,7 @@
 use strict;
 use warnings;
 
-use Test::More tests => 24;
+use Test::More tests => 28;
 
 use Nitesi::Cart;
 
@@ -130,6 +130,19 @@ $cart->seed([{sku => 'ABC', name => 'ABC', price => 2, quantity => 1},
 $ret = $cart->items;
 ok(@$ret == 2, "Items: $ret");
 
+$ret = $cart->count;
+ok($ret == 2, "Count: $ret");
+
+$ret = $cart->quantity;
+ok($ret == 3, "Quantity: $ret");
+
 $ret = $cart->total;
 ok($ret == 8, "Total: $ret");
 
+$cart->clear;
+
+$ret = $cart->count;
+ok($ret == 0, "Count: $ret");
+
+$ret = $cart->quantity;
+ok($ret == 0, "Quantity: $ret");