def test_some_non_float_items_and_total(self):
# Given
items: List[str] = ['item1 3.99', 'item2 G1.00']
total: str = 'TOTAL F0.99'
# Then
with self.assertRaises(ValueError) as context:
ParsedReceipt(items, total)
self.assertEqual(
'Prices must be decimal numbers: could not convert string to float: \'G1.00\'',
str(context.exception))
def test_parse_receipt_with_non_float_total(self):
# Given
items: List[str] = ['item1 1.00']
total: str = 'TOTAL F0.99'
# Then
with self.assertRaises(ValueError) as context:
ParsedReceipt(items, total)
self.assertEqual(
'Total must be a decimal number: could not convert string to float: \'F0.99\'',
str(context.exception))
def test_unsplittable_invalid_item(self):
# Given
items: List[str] = ['item13.99']
total: str = 'TOTAL 0.99'
# Then
with self.assertRaises(ValueError) as context:
ParsedReceipt(items, total)
self.assertEqual(
'Unable to parse item name and price from \'item13.99\'',
str(context.exception))
def test_parse_receipt_with_one_item(self):
# Given
items: List[str] = ['item1 1.00']
total: str = 'TOTAL 0.99'
# When
parsed_receipt = ParsedReceipt(items, total)
# Then
self.assertEqual(parsed_receipt.total, 0.99)
self.assertIsNotNone(parsed_receipt.items)
self.assertEqual(len(parsed_receipt.items), 1)
def test_parse_receipt_with_no_items(self):
# Given
items: List[str] = []
total: str = ''
# When
parsed_receipt = ParsedReceipt(items, total)
# Then
self.assertEqual(parsed_receipt.total, 0.0)
self.assertIsNotNone(parsed_receipt.items)
self.assertEqual(len(parsed_receipt.items), 0)
def test_parse_receipt_with_multiple_items(self):
# Given
items: List[str] = ['item1 1.00', 'item2 3.99', 'item3 2.01']
total: str = 'TOTAL 0.99'
# When
parsed_receipt = ParsedReceipt(items, total)
# Then
self.assertEqual(parsed_receipt.total, 0.99)
self.assertIsNotNone(parsed_receipt.items)
self.assertEqual(len(parsed_receipt.items), 3)
third_item = parsed_receipt.items[2]
self.assertEqual(third_item.name, 'item3')
self.assertEqual(third_item.price, 2.01)
def create_parsed_receipt(item_list):
total_string = item_list.pop()
new_receipt = ParsedReceipt(item_list, total_string)
return new_receipt