def test_single_addition():
addition = "1 + 1"
result: [Token] = TokenParser(addition).parse()
assert len(result) == 3
assert isinstance(result[0], Number)
assert isinstance(result[1], Addition)
assert isinstance(result[2], Number)
def test_two_digit_number_division():
division = "12 / 12"
result: [Token] = TokenParser(division).parse()
assert len(result) == 3
assert isinstance(result[0], Number)
assert isinstance(result[1], Division)
assert isinstance(result[2], Number)
def test_two_digit_number_subtraction():
subtraction = "12 - 12"
result: [Token] = TokenParser(subtraction).parse()
assert len(result) == 3
assert isinstance(result[0], Number)
assert isinstance(result[1], Subtraction)
assert isinstance(result[2], Number)
def test_two_digit_number_multiplication():
multiplication = "12 * 12"
result: [Token] = TokenParser(multiplication).parse()
assert len(result) == 3
assert isinstance(result[0], Number)
assert isinstance(result[1], Multiplication)
assert isinstance(result[2], Number)
def test_two_digit_number_addition():
addition = "12 + 12"
result: [Token] = TokenParser(addition).parse()
assert len(result) == 3
assert isinstance(result[0], Number)
assert isinstance(result[1], Addition)
assert isinstance(result[2], Number)
def test_single_division():
division = "1 / 1"
result: [Token] = TokenParser(division).parse()
assert len(result) == 3
assert isinstance(result[0], Number)
assert isinstance(result[1], Division)
assert isinstance(result[2], Number)
def test_single_multiplication():
multiplication = "1 * 1"
result: [Token] = TokenParser(multiplication).parse()
assert len(result) == 3
assert isinstance(result[0], Number)
assert isinstance(result[1], Multiplication)
assert isinstance(result[2], Number)
def test_single_subtraction():
subtraction = "1 - 1"
result: [Token] = TokenParser(subtraction).parse()
assert len(result) == 3
assert isinstance(result[0], Number)
assert isinstance(result[1], Subtraction)
assert isinstance(result[2], Number)
def test_global1():
calculation_str = "(3 + 8) * (5/2) - 1"
token_list: [Token] = TokenParser(calculation_str).parse()
token_stack: TokenStack = RpnTransformer(token_list).transform()
number: Number = RpnCalculator(token_stack).compute()
assert str(number) == "21"
def test_long_operation():
division = "(12 + 1) * 3 / (4 + 1) "
result: [Token] = TokenParser(division).parse()
assert len(result) == 13
assert isinstance(result[0], Parenthesis)
assert isinstance(result[1], Number)
assert isinstance(result[2], Addition)
assert isinstance(result[3], Number)
assert isinstance(result[4], Parenthesis)
assert isinstance(result[5], Multiplication)
assert isinstance(result[6], Number)
assert isinstance(result[7], Division)
assert isinstance(result[8], Parenthesis)
assert isinstance(result[9], Number)
assert isinstance(result[10], Addition)
assert isinstance(result[11], Number)
assert isinstance(result[12], Parenthesis)