def test_multiple_valid_graph_parallel_parents(self):
nodes = [Node(colour = Colour.GREEN, id = 1), #0
Node(colour = Colour.BLACK, id = 2), #1
Node(colour = Colour.BLACK, id = 3), #2
Node(colour = Colour.BLUE, id = 4), #3
Node(colour = Colour.RED, id = 5)] #4
simple_graph = {
0: [1, 2],
1: [2, 3],
2: [4],
3: [],
4: [],
}
"""
Possible Graphs:
0 -> 1
1 -> 3
1 -> 2
2 -> 4
--OR--
0 -> 2
0 -> 1
2 -> 4
1 -> 3
"""
# visualize_graph(simple_graph)
node_graph = index_to_nodes(nodes, simple_graph)
result = traverse_graph(
graph = node_graph,
target_colours = [Colour.BLUE, Colour.RED])
final = list(result)
assert len(final) == 2, "Should contain two possible graphs."
def test_example2(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.RED, id = 3)]
simple_graph = {
0: [],
1: [0],
2: [0]
}
node_graph = index_to_nodes(nodes, simple_graph)
result = list(traverse_graph(graph = node_graph, target_colours = [Colour.RED]))
assert len(result) == 0
def test_multiple_invalid_graph(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.BLUE, id = 3)]
simple_graph = {
nodes[0]: [nodes[1]],
nodes[1]: [nodes[2]],
nodes[2]: []
}
result = traverse_graph(graph = simple_graph,
target_colours = [Colour.BLUE, Colour.RED])
final = list(result)
assert len(list(result)) == 0, "Should not return any valid graphs."
def test_starting_node_cycle(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.BLACK, id = 3),
Node(colour = Colour.BLUE, id = 4)]
simple_graph = {
0 : [1],
1 : [2],
2 : [0, 3],
3 : [],
}
node_graph = index_to_nodes(nodes, simple_graph)
result = list(traverse_graph(graph = node_graph,
target_colours = [Colour.BLUE]))
assert len(result) == 1, "Failed to find the single correct graph"
assert len(result[0]) == 4, "The correct graph should have 4 nodes"
def test_cycle_single_parent(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.BLACK, id = 3),
Node(colour = Colour.BLACK, id = 4),
Node(colour = Colour.BLUE, id = 5)]
simple_graph = {
0 : [1],
1 : [2, 3],
2 : [3, 4],
3 : [1, 4],
4 : []
}
node_graph = index_to_nodes(nodes, simple_graph)
result = list(traverse_graph(graph = node_graph, target_colours = [Colour.BLUE]))
assert len(result) == 3, "Should have found all three target graphs"
def test_single_graph(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.BLUE, id = 3)]
simple_graph = {
nodes[0]: [nodes[1]],
nodes[1]: [nodes[2]],
nodes[2]: []
}
result = traverse_graph(graph = simple_graph,
target_colours = [Colour.BLUE])
for key in result:
for k, v in key.items():
node_entry = simple_graph.get(list(filter(lambda x: x.id == k.id, nodes))[0])
# Check to make sure the ID's of every child node are the same.
assert list(map(lambda n: n.id, node_entry)) == list(map(lambda n: n.id, v))
def test_multiple_target_valid_graph_serial_parents(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.BLACK, id = 3),
Node(colour = Colour.BLUE, id = 4),
Node(colour = Colour.RED, id = 5)]
simple_graph = {
0: [1],
1: [2],
2: [3],
3: [4],
4: [],
}
node_graph = index_to_nodes(nodes, simple_graph)
result = traverse_graph(graph = node_graph,
target_colours = [Colour.BLUE, Colour.RED])
final = list(result)
assert len(final[0].items()) == 5, "Should contain one of every node."
def test_splitting_end_points(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.BLACK, id = 3),
Node(colour = Colour.BLACK, id = 4),
Node(colour = Colour.BLUE, id = 5),
Node(colour = Colour.RED, id = 6),
Node(colour = Colour.BLACK, id = 7)]
simple_graph = {
0 : [1, 4, 5],
1 : [2],
2 : [3],
3 : [3, 0, 4],
4 : [],
5 : [],
6 : [4],
}
node_graph = index_to_nodes(nodes, simple_graph)
result = list(traverse_graph(graph = node_graph, target_colours = [Colour.BLUE, Colour.RED]))
assert len(result) == 2, "Should have found all three target graphs"
def test_cycle_multiple_parents(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.BLACK, id = 3),
Node(colour = Colour.BLACK, id = 4),
Node(colour = Colour.BLUE, id = 5),
Node(colour = Colour.RED, id = 6)]
simple_graph = {
0 : [1],
1 : [2, 3],
2 : [3, 4],
3 : [1, 4, 5],
4 : [],
5 : []
}
node_graph = index_to_nodes(nodes, simple_graph)
result = list(traverse_graph(graph = node_graph, target_colours = [Colour.BLUE, Colour.RED]))
# for graph in result:
# print("Printing solution")
# print(nodes_to_index(nodes, graph))
assert len(result) == 4, "there are no graphs that satisfy this graph"
def test_example4(self):
nodes = [Node(colour = Colour.GREEN, id = 1),
Node(colour = Colour.BLACK, id = 2),
Node(colour = Colour.GREEN, id = 3),
Node(colour = Colour.BLACK, id = 4),
Node(colour = Colour.BLACK, id = 6),
Node(colour = Colour.BLUE, id = 7),
Node(colour = Colour.RED, id = 8)]
simple_graph = {
0: [1, 6],
1: [2],
2: [3, 4],
3: [0, 5],
4: [5, 6],
5: [],
6: [],
}
node_graph = index_to_nodes(nodes, simple_graph)
result = list(traverse_graph(graph = node_graph, target_colours = [Colour.RED, Colour.BLUE]))
#for graph in result:
# print("Printing solution")
# print(nodes_to_index(nodes, graph))
assert len(result) == 4
def test_empty_graph(self):
result = traverse_graph(graph = {},
target_colours = [])
assert list(result) == [], "Empty graph returns empty list."