def test_uniform_bad_type(self):
"""
Test unknown type error in uniform distribution.
"""
with self.assertRaises(UnknownType):
dist = UniformDistribution(10, 12, 'bob')
with self.assertRaises(UnknownType):
dist = UniformDistribution(1, 21.2)
def test_uniform_float(self):
"""
Weak test of uniform float distributions.
"""
dist = UniformDistribution(1.0, 10.0)
self.assertEqual(dist.dtype, 'float')
for idx in xrange(100000):
self.assertGreaterEqual(dist.next(), 1.0)
self.assertLessEqual(dist.next(), 10.0)
def test_uniform_type_detection(self):
"""
Test type detection of uniform distribution.
"""
self.assertEqual(UniformDistribution(1, 5).dtype, 'int')
self.assertEqual(UniformDistribution(1.2, 5.8).dtype, 'float')
with self.assertRaises(UnknownType):
dist = UniformDistribution("bob", 2)
def test_uniform_float(self):
"""
Weak test of uniform float distributions.
"""
dist = UniformDistribution(1.0, 10.0)
self.assertEqual(dist.dtype, 'float')
for idx in xrange(100000):
self.assertGreaterEqual(dist.next(), 1.0)
self.assertLessEqual(dist.next(), 10.0)
def test_uniform_stddev(self):
"""
Test the standard deviation computation for a uniform distribution
"""
cases = (
((1, 5), 1.1547),
((1.2, 5.8), 1.3279),
)
for args, stddev in cases:
dist = UniformDistribution(*args)
self.assertAlmostEqual(dist.get_stddev(), stddev, places=4)
def test_uniform_variance(self):
"""
Test the variance computation for a uniform distribution
"""
cases = (
((1, 5), 1.33333),
((1.2, 5.8), 1.76333),
)
for args, variance in cases:
dist = UniformDistribution(*args)
self.assertAlmostEqual(dist.get_variance(), variance, places=4)
def test_uniform_mean(self):
"""
Test the mean computation for a uniform distribution
"""
cases = (
((1, 5), 3.0),
((1.2, 5.8), 3.5),
)
for args, mean in cases:
dist = UniformDistribution(*args)
self.assertAlmostEqual(dist.get_mean(), mean)
def test_uniform_stddev(self):
"""
Test the standard deviation computation for a uniform distribution
"""
cases = (
((1, 5), 1.1547),
((1.2, 5.8), 1.3279),
)
for args, stddev in cases:
dist = UniformDistribution(*args)
self.assertAlmostEqual(dist.get_stddev(), stddev, places=4)
def test_uniform_variance(self):
"""
Test the variance computation for a uniform distribution
"""
cases = (
((1, 5), 1.33333),
((1.2, 5.8), 1.76333),
)
for args, variance in cases:
dist = UniformDistribution(*args)
self.assertAlmostEqual(dist.get_variance(), variance, places=4)
def test_uniform_mean(self):
"""
Test the mean computation for a uniform distribution
"""
cases = (
((1, 5), 3.0),
((1.2, 5.8), 3.5),
)
for args, mean in cases:
dist = UniformDistribution(*args)
self.assertAlmostEqual(dist.get_mean(), mean)
