def test_uses_default_weight_when_attribute_is_missing(self):
scales = Scales(attribute_code='weight', default_weight=0.5)
p = factories.create_product()
self.assertEqual(0.5, scales.weigh_product(p))
def test_raises_exception_when_attribute_is_missing(self):
scales = Scales(attribute_code='weight')
p = factories.create_product()
with self.assertRaises(ValueError):
scales.weigh_product(p)
def test_weighs_uses_specified_attribute(self):
scales = Scales(attribute_code='weight')
p = factories.create_product(attributes={'weight': '1'})
self.assertEqual(1, scales.weigh_product(p))
def test_simple_weight_calculation(self):
scales = Scales(attribute_code='weight')
p = create_product(attributes={'weight': 1})
self.assertEqual(1, scales.weigh_product(p))
def test_exception_is_raised_when_attribute_is_missing(self):
scales = Scales(attribute_code="weight")
p = create_product()
with self.assertRaises(ValueError):
scales.weigh_product(p)
def test_default_weight_is_used_when_attribute_is_missing(self):
scales = Scales(attribute_code="weight", default_weight=0.5)
p = create_product()
self.assertEqual(0.5, scales.weigh_product(p))
def test_simple_weight_calculation(self):
scales = Scales(attribute_code='weight')
p = create_product(attributes={'weight': 1})
self.assertEqual(1, scales.weigh_product(p))