def factorial_pressed(self):
if '.' in self.result.text() or m.factorial(int(
self.result.text())) is None:
self.result.setText("Undefined")
else:
result_label = format(m.factorial(int(self.result.text())), '.15g')
self.result.setText(result_label)
def test_factorial_correct(self):
self.assertEqual(m.factorial(5), 120, "Expected solution: 120")
self.assertEqual(m.factorial(12), 479001600,
"Expected solution: 479 001 600")
self.assertEqual(m.factorial(20), 2432902008176640000,
"Expected solution: 2 432 902 008 176 640 000")
self.assertEqual(m.factorial(0), 1, "Expected solution: 1")
self.assertEqual(
m.factorial(29), 8841761993739701954543616000000,
"Expected solution: 8 841 761 993 739 701 954 543 616 000 000")
def test_factorial_incorrect(self):
self.assertEqual(
m.factorial(-1), None,
"Expected solution: None -> Can't do factorial with negative number"
)
self.assertEqual(
m.factorial(1.5), None,
"Expected solution: None -> Can't do factorial with decimal number"
)
self.assertEqual(
m.factorial(-10), None,
"Expected solution: None -> Can't do factorial with negative number"
)