def submit(self):
if self.set_mass.text == "" and self.set_volume.text == "":
self.concentration.text = "first enter any value"
else:
if str_checker(self.set_mass.text) and str_checker(self.set_volume.text):
mm = float(self.set_mass.text)
vol = float(self.set_volume.text)
molar_mass = float(self.mass.text)
mol = mm / molar_mass
word = str(round((mol / vol), 2))
word += " mol/L"
self.concentration.text = word
else:
self.concentration.text = "enter properly volume and mass"
def test_dot_float_dot(self):
self.assertEqual(None, str_checker("1.25."))
def test_not_dot_float(self):
self.assertEqual(False, str_checker(".125"))
def test_not_number(self):
self.assertEqual(False, str_checker("125a"))
def test_integer(self):
self.assertEqual(True, str_checker("125"))
def test_float(self):
self.assertEqual(True, str_checker("125.0"))
def test_empty(self):
self.assertEqual(None, str_checker(""))