def test_reverse(self):
self.assertEqual(
ssl(['Milk', 'Salami', 'Pear', 'Cage'], self.mapping, self.order),
['Pear', 'Salami', 'Milk', 'Cage'])
self.assertEqual(
ssl(shopping_list=['Milk', 'Salami', 'Pear', 'Cage'],
mapping=self.mapping,
departments_order=list(reversed(self.order))),
['Cage', 'Milk', 'Salami', 'Pear'])
def test_missing_department(self):
self.assertEqual(
ssl(['Cake', 'Pineapple'], self.mapping,
['Bakery', 'Deli']), ['Cake'],
msg='There may be department in mapping,'
' but no such department in market. '
'You should not include products from such department '
'in your result')
def test_empty_shopping_list(self):
self.assertEqual(ssl([], self.mapping, self.order), [])
def test_extra_department(self):
self.order.append('New dep')
self.assertEqual(ssl(['Butter', 'Pie'], self.mapping, self.order),
['Pie', 'Butter'])
def test_preserve_list_order(self):
self.assertEqual(ssl(['Butter', 'Eggs', 'Milk'], self.mapping,
self.order), ['Butter', 'Eggs', 'Milk'],
msg='Order from shopping list should '
'be preserved as much as possile')
def test_empty_mapping(self):
self.assertEqual(ssl(['Apple', 'Pear', 'Milk'], {}, self.order), [])
def test_missing_mapping(self):
self.assertEqual(ssl(['Milk', 'Unknown Product'], self.mapping,
self.order), ['Milk'],
msg="If product's missing in mapping, "
"it shouldn't be included in result")
def test_empty_departments(self):
self.assertEqual(ssl(['Apple', 'Meat'], self.mapping, []), [],
msg='There may be no departments at all.')