test('works as expected', function () {
var it = new Item({count: 7});
var res = it.consume(5);
assert.strictEqual(res, 5);
assert.strictEqual(it.count, 2);
assert.isFalse(it.deleted);
res = it.consume(4);
assert.strictEqual(res, 2);
assert.strictEqual(it.count, 0);
assert.isTrue(it.deleted);
});
assert.throw(function () {
it.consume('moo');
}, assert.AssertionError);