def test_creation(self):
il = InvoiceLine()
il.quantity = 11
il.price = 2
il.item_name = 'test'
il.tax_percent = 0.21
il.tax_category = "S"
assert il.is_valid()
def test_initialization(self):
il = InvoiceLine(quantity=11,
unit_code="EA",
price=2,
item_name='test',
currency="EUR",
tax_percent=0.21,
tax_category="S")
assert il.is_valid()
assert il.currency == "EUR"