def test_form_when_variant_does_not_exist():
cart_lines = []
cart = Mock(add=lambda variant, quantity: cart_lines.append(Mock()),
get_line=Mock(return_value=Mock(quantity=1)))
form = forms.AddToCartForm(data={'quantity': 1}, cart=cart, product=Mock())
form.get_variant = Mock(side_effect=ObjectDoesNotExist)
assert not form.is_valid()
def test_add_to_cart_form():
cart_lines = []
cart = Mock(add=lambda variant, quantity: cart_lines.append(variant),
get_line=Mock(return_value=Mock(quantity=1)))
data = {'quantity': 1}
form = forms.AddToCartForm(data=data, cart=cart, product=Mock())
product_variant = Mock(check_quantity=Mock(return_value=None))
form.get_variant = Mock(return_value=product_variant)
assert form.is_valid()
form.save()
assert cart_lines == [product_variant]
with pytest.raises(NotImplementedError):
data = {'quantity': 1}
form = forms.AddToCartForm(data=data, cart=cart, product=Mock())
form.is_valid()
def test_add_to_cart_form_when_insufficient_stock(product):
variant = product.variants.first()
cart_lines = []
cart = Mock(add=lambda variant, quantity: cart_lines.append(variant),
get_line=Mock(return_value=Mock(quantity=49)))
form = forms.AddToCartForm(data={'quantity': 1}, cart=cart, product=Mock())
form.get_variant = Mock(return_value=variant)
assert not form.is_valid()
def test_add_to_cart_form_when_insufficient_stock():
cart_lines = []
cart = Mock(add=lambda variant, quantity: cart_lines.append(variant),
get_line=Mock(return_value=Mock(quantity=1)))
form = forms.AddToCartForm(data={'quantity': 1}, cart=cart, product=Mock())
exception_mock = InsufficientStock(
Mock(get_stock_quantity=Mock(return_value=4)))
product_variant = Mock(check_quantity=Mock(side_effect=exception_mock))
form.get_variant = Mock(return_value=product_variant)
assert not form.is_valid()
