def test_all_same_type(self):
"""
Test two simple valid sequences.
"""
seq = [1, 1, 1, 1, 1, 1]
assert verify_layer_sequence(seq)
seq = [3, 3, 3, 3, 3, 3]
assert verify_layer_sequence(seq)
def test_real_sequence(self):
"""
This sequence came with the code of unknown provenance
"""
seq = [1, 1, 1, 2, 3, 3, 3, 3, 3, 4, 1]
assert verify_layer_sequence(seq)
def test_invalid_pattern(self):
seq = [1, 3, 2, 4]
assert not verify_layer_sequence(seq)
def test_valid_pattern(self):
seq = [1, 2, 3, 4]
assert verify_layer_sequence(seq)
def test_one_nonnumeric(self):
seq = [1, 1, 1, "a", 1, 1]
assert not verify_layer_sequence(seq)
def test_one_negative(self):
with pytest.raises(ValueError):
seq = [1, 1, 1, 1, 5, 1]
assert not verify_layer_sequence(seq)