class TestExponentialClass(unittest.TestCase):
def setUp(self):
self.exponential = Exponential(0.25)
self.exponential.read_data_file('numbers_exponential.txt')
def test_initialization(self):
self.assertEqual(self.exponential.mean, 4.0, 'incorrect mean')
self.assertEqual(self.exponential.stdev, 4.0,
'incoorect standard deviation')
def test_readdata(self):
self.assertEqual(self.exponential.data,
[1, 3, 99, 100, 120, 32, 330, 23, 76, 44, 31],
'data read incorrectly')
def test_meancalculation(self):
self.assertEqual(self.exponential.calculate_mean(),
(1.0 / 0.25),
'calculated mean not as expected')
def test_stdevcalculation(self):
self.assertEqual(self.exponential.calculate_stdev(),
(1.0 / 0.25),
'calculated standard deviation incorrect')
def test_pdf(self):
self.assertEqual(round(self.exponential.pdf(1), 5), 0.19470,
'pdf function does not give expexted result')
self.exponential.calculate_mean()
self.exponential.calculate_stdev()
self.assertEqual(round(self.exponential.pdf(5), 5), 0.07163,
'pdf function after calculating mean and \
stdev does not give expected result')
def setUp(self):
self.exponential = Exponential(0.25)
self.exponential.read_data_file('probdists/numbers_exponential.txt')
class TestExponentialClass(unittest.TestCase):
def setUp(self):
self.exponential = Exponential(0.25)
self.exponential.read_data_file('probdists/numbers_exponential.txt')
def test_initialization(self):
self.assertEqual(self.exponential.mean, 4.0, 'incorrect mean')
self.assertEqual(self.exponential.stdev, 4.0,
'incoorect standard deviation')
def test_readdata(self):
self.assertEqual(self.exponential.data,
[1, 3, 99, 100, 120, 32, 330, 23, 76, 44, 31],
'data read incorrectly')
def test_meancalculation(self):
self.exponential.calculate_mean()
self.assertEqual(self.exponential.mean,
(1.0 / 0.25),
'calculated mean not as expected')
def test_stdevcalculation(self):
self.exponential.calculate_stdev()
self.assertEqual(self.exponential.stdev,
(1.0 / 0.25),
'calculated standard deviation incorrect')
def test_pdf(self):
self.assertEqual(self.exponential.calculate_pdf(1, 5), 0.19470,
'calculate_pdf function does not give expected result')
self.exponential.calculate_mean()
self.exponential.calculate_stdev()
self.assertEqual(self.exponential.calculate_pdf(5, 5), 0.07163,
'calculate_pdf function after calculating mean and \
stdev does not give expected result')
def test_cdf(self):
self.assertEqual(self.exponential.calculate_cdf(-2.5), 0, 'calculate_cdf does not return expected result')
self.assertEqual(self.exponential.calculate_cdf(12.3, 5), 0.95381, 'calculate_cdf does not return expected result')
self.exponential.calculate_mean()
self.exponential.calculate_stdev()
self.assertEqual(self.exponential.calculate_cdf(-1.3), 0, \
'calculate_cdf does not return expected result after calculating mean and stdev')
self.assertEqual(self.exponential.calculate_cdf(9.5, 4), 0.907, \
'calculate_cdf does not return expected result after calculating mean and stdev')