def _test_calculate_expression(self):
text1 = "exp (1 add 2 multiply 3)"
text2 = (
"((15 DIVIDE (7 SUBTRACT (1 ADD 1))) MULTIPLY 3) SUBTRACT (2 ADD (1 ADD 1))"
)
calc = Calculator()
input_queue1 = calc.create_input_queue(text1)
assert str(input_queue1) == "EXP, (, 1.0, ADD, 2.0, MULTIPLY, 3.0, ), "
output_queue1 = calc.create_output_queue()
input_queue2 = calc.create_input_queue(text2)
assert (
str(input_queue2)
== "(, (, 15.0, DIVIDE, (, 7.0, SUBTRACT, (, 1.0, ADD, 1.0, ), ), ), MULTIPLY, 3.0, ), SUBTRACT, (, 2.0, ADD, (, 1.0, ADD, 1.0, ), ), "
)
output_queue2 = calc.create_output_queue()
assert (
str(output_queue2)
== "15.0, 7.0, 1.0, 1.0, add, subtract, true_divide, 3.0, multiply, 2.0, 1.0, 1.0, add, add, subtract, "
)
assert str(calc.calculate_expression(text1)).replace(", ", "") == str(
numpy.exp(7)
)
assert str(calc.calculate_expression(text2)).replace(", ", "") == "5.0"
def main(self):
command_helper = InputHelper(["calc", "test", "exit"])
try:
next_command = command_helper.get_legal_input(
"Please enter a command: \n")
if next_command == "test":
test_handler = TestHandler()
test_handler.run()
pass
if next_command == "calc":
calc = Calculator()
calc.calculate_expression(
input("Enter an expression to be calculated: "))
if next_command == "exit":
sys.exit(0)
except KeyboardInterrupt:
return self.main()
