def test_float(self):
account = Account(balance=20)
account.subtract(5.5)
self.assertEqual(account.get_balance(), 15,
"The balance was not appropriately subtracted from"
" when a float of 5.5 was subtracted")
def test_negative(self):
account = Account(balance=20)
account.subtract(-5)
self.assertEqual(account.get_balance(), 25,
"The balance was not appropriately subtracted from"
" to when a negative integer of -5 was subtracted")
def test_zero(self):
account = Account(balance=20)
account.subtract(0)
self.assertEqual(account.get_balance(), 20,
"The balance was did not remain the same when 0 was"
" subtracted")
def test_positive(self):
account = Account(balance=20)
account.subtract(5)
self.assertEqual(account.get_balance(), 15,
"The balance was not appropriately subtracted from"
" when a positive integer of 5 was subtracted")