def test_nrmse_unequal_length():
'''Test if comparing unequal vectors raises an exception
'''
r = np.array([1, 1, 1.1])
s = np.array([1, 1])
try:
utils.nrmse(s, r)
err = "Nrmse did not complain about comparing vectors of unequal length."
raise Exception(err)
except RuntimeError:
pass
def test_nrmse_length_1():
'''Test if NRMSE on signal of length 1 raises an exception
'''
r = np.array([1])
s = np.array([1])
try:
utils.nrmse(s, r)
err = "Nrmse did not complain about comparing vectors of unequal length."
raise Exception(err)
except NotImplementedError:
pass
def test_nrmse():
'''Test if nrmse gives correct known value for short vectors of three elements
'''
r = np.array([1, 1, 1.1])
s = np.array([1, 1, 1.0])
error = utils.nrmse(s, r)
nose.tools.assert_almost_equal(error, 1)