def test_linear_dirty(self):
# When reading from HDF5, rounding errors can result in minor variations in the diff
expected = 0.25E-9
vector = np.arange(-1E-9, 1E-9, expected)
round_error = np.random.rand(vector.size) * 1E-14
vector += round_error
actual = write_utils.get_slope(vector, tol=1E-3)
self.assertAlmostEqual(expected, actual)
def test_invalid_inputs(self):
with self.assertRaises(BaseException):
_ = write_utils.get_slope("hello")
def test_non_linear(self):
with self.assertRaises(ValueError):
_ = write_utils.get_slope(np.sin(np.arange(4)))
def test_invalid_tolerance(self):
with self.assertRaises(TypeError):
_ = write_utils.get_slope(np.sin(np.arange(4)), tol="hello")
def test_linear(self):
expected = 0.25
actual = write_utils.get_slope(np.arange(-1, 1, expected))
self.assertEqual(expected, actual)