def test_add_single_item_to_envelope_package(self):
width = 11.0
length = 20.0
weight = 0.3
package = EnvelopePackage()
package.add_item(width, length, weight)
self.assertTrue(package.has_items())
self.assertEqual(width, package.get_items()[0].width)
self.assertEqual(length, package.get_items()[0].length)
self.assertEqual(weight, package.get_items()[0].weight)
def test_add_multiple_items_to_envelope_package(self):
width0 = 11.0
length0 = 20.0
weight0 = 0.3
width1 = 15.0
length1 = 25.0
weight1 = 0.5
package = EnvelopePackage()
package.add_item(width0, length0, weight0)
package.add_item(width1, length1, weight1)
self.assertTrue(package.has_items())
self.assertEqual(width0, package.get_items()[0].width)
self.assertEqual(length0, package.get_items()[0].length)
self.assertEqual(weight0, package.get_items()[0].weight)
self.assertEqual(width1, package.get_items()[1].width)
self.assertEqual(length1, package.get_items()[1].length)
self.assertEqual(weight1, package.get_items()[1].weight)