def test_findSize(self):
# Given
sut = Product()
sizeA = Size(sizeEU="41.25")
sizeB = Size(sizeEU="38 2/3")
sizeC = Size(sizeEU="39")
sut.addSize(sizeA)
sut.addSize(sizeB)
sut.addSize(sizeC)
# When given size not exists
foundSize = sut.findSize(sizeStr="45")
# Then
self.assertIsNone(foundSize, f"Expected that size was not found and "
f"returned value is None, but got '{foundSize}'")
# When
foundSize = sut.findSize(sizeStr=sizeA.sizeEU)
# Then
self.assertEqual(sizeA, foundSize)
# When
foundSize = sut.findSize(sizeStr=sizeB.sizeEU)
# Then
self.assertEqual(sizeB, foundSize)
# When
foundSize = sut.findSize(sizeStr=sizeC.sizeEU)
# Then
self.assertEqual(sizeC, foundSize)
def _processSizeChange(product: Product, sizeStr: str,
isSizeInStock: bool) -> ProductChanged:
isProductChanged = False
# Check if scraped size already exists
foundSize: Size = product.findSize(sizeStr)
# If an existing size was found, copy its reference(!). Otherwise, take a new Size object.
size: Size = foundSize if foundSize else Size()
# 1.
# Scraped size does not exist at all, so add to product and mark product as changed.
if not foundSize:
size.sizeEU = sizeStr
product.addSize(size=size)
isProductChanged = True
logger.debug("New size '%s' detected & added. %s", size.sizeEU,
product.url)
# 2.
# Size already exists but its stock indicator is marked as unavailable, whereas the
# newly scraped size is marked as in-stock. Mark product as changed.
if not size.isInStock and isSizeInStock:
isProductChanged = True
logger.debug("Size '%s' has been restocked. %s", size.sizeEU,
product.url)
# 3.
# After comparison, set/update size stock indicator. Always update ALL
# found sizes as their availability may have changed to True or False and
# we have to be up-to-date in case we are sending a message.
# Note that 'size' var whether is a yet unrelated Size object or a reference
# to an existing product.size
size.isInStock = isSizeInStock
return isProductChanged