def setUp(self):
# TODO: should do this with mock objects?
dish0 = Dish(name="The bestest dish")
rec0 = Recipe(dish=dish0, title="Some awesome recipe")
self.pr0 = Product(name="Harina 0000")
self.pr1 = Product(name="Manzana")
self.am0 = Amount(quantity=Decimal('10.01'))
self.am1 = Amount(quantity=Decimal('5'))
self.ing0 = Ingredient(product=self.pr0,
recipe=rec0,
quantity=Decimal('10.01'))
self.ing1 = Ingredient(product=self.pr1,
recipe=rec0,
quantity=Decimal('5'))
def cook_recipe(request):
recipe_id = request.query_params.get('recipe_id')
place_id = request.query_params.get('place_id')
if not recipe_id:
return Response({'message': 'recipe_id must be provided'},
status=status.HTTP_400_BAD_REQUEST)
recipe = get_object_or_404(Recipe, id=recipe_id)
place = get_place_or_default(request.user.profile, place_id)
if not place:
return Response(
{'message': 'Must have at least one item in your inventory'},
status=status.HTTP_404_NOT_FOUND,
)
interaction_serializer = InteractionSerializer(
data={
**request.data, 'recipe_id': recipe_id
})
interaction_serializer.is_valid(raise_exception=True)
with transaction.atomic():
interaction = interaction_serializer.save(profile=request.user.profile)
interaction.cook()
for ingredient in recipe.ingredient_set.all():
# TODO: en la línea de abajo, que pasa si cocina con algo que no tiene?? sustitutos??
item = place.inventory.filter(product=ingredient.product).first()
if item:
item.reduce_amount(
Amount(ingredient.quantity, ingredient.unit.id))
return Response(interaction_serializer.data, status=status.HTTP_200_OK)
class IngredientTests(TestCase):
def setUp(self):
# TODO: should do this with mock objects?
dish0 = Dish(name="The bestest dish")
rec0 = Recipe(dish=dish0, title="Some awesome recipe")
self.pr0 = Product(name="Harina 0000")
self.pr1 = Product(name="Manzana")
self.am0 = Amount(quantity=Decimal('10.01'))
self.am1 = Amount(quantity=Decimal('5'))
self.ing0 = Ingredient(product=self.pr0,
recipe=rec0,
quantity=Decimal('10.01'))
self.ing1 = Ingredient(product=self.pr1,
recipe=rec0,
quantity=Decimal('5'))
def test_str_includes_amount_and_product(self):
self.assertIn(self.am0.__str__(), self.ing0.__str__())
self.assertIn(self.pr0.__str__(), self.ing0.__str__())
self.assertIn(self.am1.__str__(), self.ing1.__str__())
self.assertIn(self.pr1.__str__(), self.ing1.__str__())
def test_convert_volume_to_unit(self):
""" When converting 2L to unit with avg_unit_volume=1L, should return 2"""
item = InventoryItem.objects.create(place=self.place,
product=self.leche_descremada,
quantity=2,
unit=Unit.objects.get(name='unit'))
amount = Amount(unit=Unit.objects.get(short_name='L'), quantity=2)
obj, other = convert_to_correct_unit(item, amount)
self.assertEqual(round(other.magnitude), 2)
self.assertEqual(round((obj - other).magnitude), 0)
def test_convert_mass_to_unit(self):
""" When converting 2kg to unit with avg_unit_weight=0.252kg, should return ~8"""
item = InventoryItem.objects.create(place=self.place,
product=self.manzana,
quantity=2,
unit=Unit.objects.get(name='unit'))
amount = Amount(unit=Unit.objects.get(short_name='kg'), quantity=2)
obj, other = convert_to_correct_unit(item, amount)
self.assertEqual(round(other.magnitude), 8)
self.assertEqual(round((obj - other).magnitude), -6)
def test_convert_unit_to_mass(self):
""" When converting 1unit to g with avg_unit_weight=0.252kg, should return 252g"""
item = InventoryItem.objects.create(
place=self.place,
product=self.manzana,
quantity=1000,
unit=Unit.objects.get(short_name='g'))
amount = Amount(unit=Unit.objects.get(name='unit'), quantity=1)
obj, other = convert_to_correct_unit(item, amount)
self.assertEqual(round(other.magnitude), 252)
self.assertEqual(round((obj - other).magnitude), 748)
def test_convert_volume_with_density_to_mass(self):
""" When converting 0.4845L to kg with density=1032kg/m**3, should return 0.5kg"""
item = InventoryItem.objects.create(
place=self.place,
product=self.leche,
quantity=5,
unit=Unit.objects.get(short_name='kg'))
amount = Amount(unit=Unit.objects.get(short_name='L'), quantity=0.4845)
obj, other = convert_to_correct_unit(item, amount)
self.assertEqual(round(other.magnitude, 1), 0.5)
self.assertEqual(round((obj - other).magnitude, 1), 4.5)
def test_convert_mass_with_density_to_volume(self):
""" When converting 2064g to L with density=1032kg/m**3, should return 2L"""
item = InventoryItem.objects.create(
place=self.place,
product=self.leche,
quantity=5,
unit=Unit.objects.get(short_name='L'))
amount = Amount(unit=Unit.objects.get(short_name='g'), quantity=2064)
obj, other = convert_to_correct_unit(item, amount)
self.assertEqual(round(other.magnitude), 2)
self.assertEqual(round((obj - other).magnitude), 3)
def create(self, validated_data):
purchase_items_serializer = PurchaseItemSerializer(
data=validated_data.pop('items'), many=True)
if not purchase_items_serializer.is_valid():
raise TypeError(purchase_items_serializer.errors)
purchase = Purchase.objects.create()
items_no_dupes = {}
for purchase_item in purchase_items_serializer.save(purchase=purchase):
if (existing_pi := items_no_dupes.get(purchase_item.product.name,
None)):
existing_pi.add_amount(
Amount(purchase_item.quantity, purchase_item.unit.id))
else:
purchase_item.save()
items_no_dupes[purchase_item.product.name] = purchase_item
def create(self, validated_data):
product = validated_data.get('product')
place = validated_data.get('place')
if place:
existing_items = place.inventory.filter(product=product)
if existing_items.exists():
item = existing_items.first()
item.add_amount(
Amount(validated_data.get('quantity'),
validated_data.get('unit').id))
else:
item = InventoryItem.objects.create(**validated_data)
else:
place = PlaceSerializer.create(self, {'name': DEFAULT_PLACE_NAME})
item = InventoryItem.objects.create(**validated_data, place=place)
return item
def test_unshortened_units_have_pluralized_name_when_appropriate(self):
am5 = Amount(unit=self.cup_unit, quantity=Decimal('108'))
am6 = Amount(unit=self.cup_unit, quantity=Decimal('1.000'))
am7 = Amount(unit=self.cup_unit, quantity=Decimal('0.025'))
am8 = Amount(unit=self.cup_unit, quantity=Decimal('1'))
self.assertIn('cups', am5.__str__())
self.assertIn('cup', am6.__str__())
self.assertIn('cups', am7.__str__())
self.assertIn('cup', am8.__str__())
def test_unplain_units_have_its_short_name(self):
am2 = Amount(unit=self.kg_unit, quantity=Decimal('3.14'))
am3 = Amount(unit=self.liter_unit, quantity=Decimal('2.718'))
self.assertIn(self.plain_unit.short_name, am2.__str__())
self.assertIn(self.liter_unit.short_name, am3.__str__())
def test_plain_unit_has_empty_short_name(self):
am1 = Amount(unit=self.plain_unit, quantity=Decimal('3'))
self.assertEqual(am1.__str__(), '3')