def test_quitting(self, input_values):
self.input_values = iter(input_values)
interface.main()
assert any("Quitting" in s for s in self.output), (
"Users should be able to quit your program any time")
def test_len_prompts(self, input_values):
expected = len(input_values)
self.input_values = iter(input_values)
interface.main()
assert len(self.prompts) == expected, (
f"You should be prompting {expected} times")
def test_ouput_value(self, input_values, expected):
self.input_values = iter(input_values)
interface.main()
pattern = r"The\sresult\sis:\s(-?\d+(.\d)?)"
match = re.search(pattern, self.output[1])
assert float(match.group(1)) == expected, (
"'{}' not implemented properly".format(input_values[0]))
def test_invalid_operator(self):
self.input_values = iter(['invalid_operator', '1', '3', 'quit'])
interface.main()
assert (
"Sorry, 'invalid_operator' "
"is not a valid operator") in self.output, (
"You need to handle invalid operators")
assert all(["The result is: " not in o for o in self.output]), (
"If the operator is invalid, you shouldn't display the result")
def test_prompts_values(self, input_values):
self.input_values = iter(input_values)
interface.main()
expected = [
"Pick an operator (+, -, *, /, //, %): ",
"First number: ",
"Second number: "
]
assert all(e in self.prompts for e in expected), (
"At least one of your prompts value is wrong")
def test_prints(self):
self.input_values = iter(["+", "3", "1", "quit"])
interface.main()
prints = [
r"Welcome to Calculator, you can quit anytime by typing 'quit'",
r"The result is: \d+(.\d+)?",
r"-+"
]
# TODO: Probably split this into individual tests
# To provide more guidance
assert all([
any([re.search(p, o) is not None for o in self.output])
for p in prints
]), "At least one of your print statement is incorrect"
def test_len_output(self):
self.input_values = iter(["+", "3", "1", "quit"])
interface.main()
assert len(self.output) == 4, "You should print out 4 times"