def test_construction_of_path_length_2(self):
sequence = [alice, alice_knows_bob, bob, carol_dislikes_bob, carol]
path = Path(*sequence)
assert repr(path)
assert path.order() == 3
assert path.size() == 2
assert path.length() == 2
assert set(path.nodes()) == {alice, bob, carol}
assert set(path.relationships()) == {alice_knows_bob, carol_dislikes_bob}
assert path.start_node() == alice
assert path.end_node() == carol
assert path.length() == 2
assert list(path.traverse()) == sequence
def test_construction_of_path_with_loop(self):
sequence = [carol, carol_married_to_dave, dave, dave_works_for_dave, dave]
path = Path(*sequence)
assert repr(path)
assert path.order() == 2
assert path.size() == 2
assert path.length() == 2
assert set(path.nodes()) == {carol, dave}
assert set(path.relationships()) == {carol_married_to_dave, dave_works_for_dave}
assert path.start_node() == carol
assert path.end_node() == dave
assert path.length() == 2
assert list(path.traverse()) == sequence
def test_construction_of_path_length_0(self):
sequence = [alice]
path = Path(*sequence)
assert repr(path)
assert path.order() == 1
assert path.size() == 0
assert path.length() == 0
assert set(path.nodes()) == {alice}
assert set(path.relationships()) == set()
assert path.start_node() == alice
assert path.end_node() == alice
assert path.length() == 0
assert list(path.traverse()) == sequence
def test_construction_of_path_length_1(self):
sequence = [alice, alice_knows_bob, bob]
path = Path(*sequence)
assert repr(path)
assert path.order() == 2
assert path.size() == 1
assert path.length() == 1
assert set(path.nodes()) == {alice, bob}
assert set(path.relationships()) == {alice_knows_bob}
assert path.start_node() == alice
assert path.end_node() == bob
assert path.length() == 1
assert list(path.traverse()) == sequence
def test_construction_of_path_length_0(self):
sequence = [alice]
path = Path(*sequence)
assert repr(path)
assert path.order() == 1
assert path.size() == 0
assert path.length() == 0
assert set(path.nodes()) == {alice}
assert set(path.relationships()) == set()
assert path.start_node() == alice
assert path.end_node() == alice
assert path.length() == 0
assert list(path.traverse()) == sequence
def test_construction_of_path_with_loop(self):
sequence = [
carol, carol_married_to_dave, dave, dave_works_for_dave, dave
]
path = Path(*sequence)
assert repr(path)
assert path.order() == 2
assert path.size() == 2
assert path.length() == 2
assert set(path.nodes()) == {carol, dave}
assert set(path.relationships()) == {
carol_married_to_dave, dave_works_for_dave
}
assert path.start_node() == carol
assert path.end_node() == dave
assert path.length() == 2
assert list(path.traverse()) == sequence
def test_construction_of_path_with_revisits(self):
sequence = [
alice, alice_knows_bob, bob, carol_dislikes_bob, carol,
alice_likes_carol, alice, alice_knows_bob, bob
]
path = Path(*sequence)
assert repr(path)
assert path.order() == 3
assert path.size() == 3
assert path.length() == 4
assert set(path.nodes()) == {alice, bob, carol}
assert set(path.relationships()) == {
alice_knows_bob, alice_likes_carol, carol_dislikes_bob
}
assert path.start_node() == alice
assert path.end_node() == bob
assert path.length() == 4
assert list(path.traverse()) == sequence