def test_calls_relu_activation(self):
with unittest.mock.patch(
'deepen.propagation.relu',
wraps = prop.relu
) as relu_spy:
prop.layer_forward(*self.params, 'relu')
relu_spy.assert_called_once()
def test_calls_sigmoid(self):
with unittest.mock.patch(
'deepen.propagation.sigmoid',
wraps = prop.sigmoid
) as sigmoid_spy:
prop.layer_forward(*self.params, 'sigmoid')
sigmoid_spy.assert_called_once()
def test_linear_cache_contains_the_inputs(self):
_, (linear_cache, _) = prop.layer_forward(*self.params, 'relu')
subtests = zip(linear_cache, self.params, ('A', 'W', 'b'))
for cached, param, description in subtests:
with self.subTest(parameter = description):
self.assertTrue(np.array_equal(cached, param))
def test_A_has_the_correct_shape(self):
A, _ = prop.layer_forward(*self.params, 'relu')
self.assertTrue(A.shape == self.Z.shape)
def test_activation_cache_has_the_correct_shape(self):
_, (_, activation_cache) = prop.layer_forward(*self.params, 'relu')
self.assertTrue(activation_cache.shape == self.Z.shape)