def test_actual_data(self):
calibrator = Calibrator(32768, 120)
self.assertAlmostEqual(calibrator.flow(32780),
0.1,
msg="Fails to return a reasonable value "
"given actual data the sensor could "
"return.")
def test_one_parameters_and_data(self):
calibrator = Calibrator(1, 1)
self.assertAlmostEqual(calibrator.flow(1),
0.0,
msg="Fails to return 0.0 when measured "
"value, offset flow, and scale factor "
"flow are one.")
def test_zero_one_parameters_and_zero_data(self):
calibrator = Calibrator(0, 1)
self.assertAlmostEqual(calibrator.flow(0),
0.0,
msg="Fails to return 0.0 when measured "
"value and offset flow are zero and "
"scale factor flow is non-zero.")
def test_one_parameters_and_large_data(self):
calibrator = Calibrator(1, 1)
self.assertAlmostEqual(calibrator.flow(10),
9.0,
msg="Fails to return the correct value "
"when the result is non-zero.")
def test_zero_scale_factor_flow(self):
with self.assertRaises(ZeroDivisionError,
msg="Fails to raise a ZeroDivisionError "
"when initialized with a scale factor "
"flow equal to 0."):
Calibrator(0, 0)