def test_graph_add_edges(using_opengl_renderer):
G = Graph([1, 2, 3, 4, 5], [(1, 2), (2, 3)])
added_mobjects = G.add_edges((1, 3))
assert isinstance(added_mobjects.submobjects[0], Line)
assert len(G.vertices) == 5
assert len(G.edges) == 3
assert set(G.vertices.keys()) == {1, 2, 3, 4, 5}
assert set(G.edges.keys()) == {(1, 2), (2, 3), (1, 3)}
added_mobjects = G.add_edges((1, 42))
removed_mobjects = added_mobjects.submobjects
assert isinstance(removed_mobjects[0], Dot)
assert isinstance(removed_mobjects[1], Line)
assert len(G.vertices) == 6
assert len(G.edges) == 4
assert set(G.vertices.keys()) == {1, 2, 3, 4, 5, 42}
assert set(G.edges.keys()) == {(1, 2), (2, 3), (1, 3), (1, 42)}
added_mobjects = G.add_edges((4, 5), (5, 6), (6, 7))
assert len(added_mobjects) == 5
assert len(G.vertices) == 8
assert len(G.edges) == 7
assert set(G.vertices.keys()) == {1, 2, 3, 4, 5, 42, 6, 7}
assert set(G._graph.nodes()) == set(G.vertices.keys())
assert set(G.edges.keys()) == {
(1, 2),
(2, 3),
(1, 3),
(1, 42),
(4, 5),
(5, 6),
(6, 7),
}
assert set(G._graph.edges()) == set(G.edges.keys())
def test_graph_add_edges():
G = Graph([1, 2, 3, 4, 5], [(1, 2), (2, 3)])
added_mobjects = G.add_edges((1, 3))
assert str(added_mobjects.submobjects) == "[Line]"
assert str(G) == "Graph on 5 vertices and 3 edges"
assert set(G.vertices.keys()) == {1, 2, 3, 4, 5}
assert set(G.edges.keys()) == {(1, 2), (2, 3), (1, 3)}
added_mobjects = G.add_edges((1, 42))
assert str(added_mobjects.submobjects) == "[Dot, Line]"
assert str(G) == "Graph on 6 vertices and 4 edges"
assert set(G.vertices.keys()) == {1, 2, 3, 4, 5, 42}
assert set(G.edges.keys()) == {(1, 2), (2, 3), (1, 3), (1, 42)}
added_mobjects = G.add_edges((4, 5), (5, 6), (6, 7))
assert len(added_mobjects) == 5
assert str(G) == "Graph on 8 vertices and 7 edges"
assert set(G.vertices.keys()) == {1, 2, 3, 4, 5, 42, 6, 7}
assert set(G._graph.nodes()) == set(G.vertices.keys())
assert set(G.edges.keys()) == {
(1, 2),
(2, 3),
(1, 3),
(1, 42),
(4, 5),
(5, 6),
(6, 7),
}
assert set(G._graph.edges()) == set(G.edges.keys())
def test_graph_creation():
vertices = [1, 2, 3, 4]
edges = [(1, 2), (2, 3), (3, 4), (4, 1)]
layout = {1: [0, 0, 0], 2: [1, 1, 0], 3: [1, -1, 0], 4: [-1, 0, 0]}
G_manual = Graph(vertices=vertices, edges=edges, layout=layout)
assert str(G_manual) == "Graph on 4 vertices and 4 edges"
G_spring = Graph(vertices=vertices, edges=edges)
assert str(G_spring) == "Graph on 4 vertices and 4 edges"
def test_graph_creation(using_opengl_renderer):
vertices = [1, 2, 3, 4]
edges = [(1, 2), (2, 3), (3, 4), (4, 1)]
layout = {1: [0, 0, 0], 2: [1, 1, 0], 3: [1, -1, 0], 4: [-1, 0, 0]}
G_manual = Graph(vertices=vertices, edges=edges, layout=layout)
assert len(G_manual.vertices) == 4
assert len(G_manual.edges) == 4
G_spring = Graph(vertices=vertices, edges=edges)
assert len(G_spring.vertices) == 4
assert len(G_spring.edges) == 4
def test_graph_remove_vertices():
G = Graph([1, 2, 3, 4, 5], [(1, 2), (2, 3), (3, 4), (4, 5)])
removed_mobjects = G.remove_vertices(3)
assert len(removed_mobjects) == 3
assert str(G) == "Graph on 4 vertices and 2 edges"
assert list(G.vertices.keys()) == [1, 2, 4, 5]
assert list(G.edges.keys()) == [(1, 2), (4, 5)]
removed_mobjects = G.remove_vertices(4, 5)
assert len(removed_mobjects) == 3
assert str(G) == "Graph on 2 vertices and 1 edges"
assert list(G.vertices.keys()) == [1, 2]
assert list(G.edges.keys()) == [(1, 2)]
def test_graph_remove_edges():
G = Graph([1, 2, 3, 4, 5], [(1, 2), (2, 3), (3, 4), (4, 5), (1, 5)])
removed_mobjects = G.remove_edges((1, 2))
assert str(removed_mobjects.submobjects) == "[Line]"
assert str(G) == "Graph on 5 vertices and 4 edges"
assert set(G.edges.keys()) == {(2, 3), (3, 4), (4, 5), (1, 5)}
assert set(G._graph.edges()) == set(G.edges.keys())
removed_mobjects = G.remove_edges((2, 3), (3, 4), (4, 5), (5, 1))
assert len(removed_mobjects) == 4
assert str(G) == "Graph on 5 vertices and 0 edges"
assert set(G._graph.edges()) == set()
assert set(G.edges.keys()) == set()
def test_graph_remove_vertices(using_opengl_renderer):
G = Graph([1, 2, 3, 4, 5], [(1, 2), (2, 3), (3, 4), (4, 5)])
removed_mobjects = G.remove_vertices(3)
assert len(removed_mobjects) == 3
assert len(G.vertices) == 4
assert len(G.edges) == 2
assert list(G.vertices.keys()) == [1, 2, 4, 5]
assert list(G.edges.keys()) == [(1, 2), (4, 5)]
removed_mobjects = G.remove_vertices(4, 5)
assert len(removed_mobjects) == 3
assert len(G.vertices) == 2
assert len(G.edges) == 1
assert list(G.vertices.keys()) == [1, 2]
assert list(G.edges.keys()) == [(1, 2)]
def test_graph_remove_edges(using_opengl_renderer):
G = Graph([1, 2, 3, 4, 5], [(1, 2), (2, 3), (3, 4), (4, 5), (1, 5)])
removed_mobjects = G.remove_edges((1, 2))
assert isinstance(removed_mobjects.submobjects[0], Line)
assert len(G.vertices) == 5
assert len(G.edges) == 4
assert set(G.edges.keys()) == {(2, 3), (3, 4), (4, 5), (1, 5)}
assert set(G._graph.edges()) == set(G.edges.keys())
removed_mobjects = G.remove_edges((2, 3), (3, 4), (4, 5), (5, 1))
assert len(removed_mobjects) == 4
assert len(G.vertices) == 5
assert len(G.edges) == 0
assert set(G._graph.edges()) == set()
assert set(G.edges.keys()) == set()
def test_graph_add_vertices():
G = Graph([1, 2, 3], [(1, 2), (2, 3)])
G.add_vertices(4)
assert str(G) == "Graph on 4 vertices and 2 edges"
G.add_vertices(5, labels={5: Text("5")})
assert str(G) == "Graph on 5 vertices and 2 edges"
assert 5 in G._labels
assert 5 in G._vertex_config
G.add_vertices(6, 7, 8)
assert len(G.vertices) == 8
assert len(G._graph.nodes()) == 8
def test_graph_add_vertices(using_opengl_renderer):
G = Graph([1, 2, 3], [(1, 2), (2, 3)])
G.add_vertices(4)
assert len(G.vertices) == 4
assert len(G.edges) == 2
G.add_vertices(5, labels={5: Text("5")})
assert len(G.vertices) == 5
assert len(G.edges) == 2
assert 5 in G._labels
assert 5 in G._vertex_config
G.add_vertices(6, 7, 8)
assert len(G.vertices) == 8
assert len(G._graph.nodes()) == 8
def test_custom_animation_mobject_list():
G = Graph([1, 2, 3], [(1, 2), (2, 3)])
scene = Scene()
scene.add(G)
assert scene.mobjects == [G]
with tempconfig({"dry_run": True, "quality": "low_quality"}):
scene.play(G.animate.add_vertices(4))
assert str(G) == "Graph on 4 vertices and 2 edges"
assert scene.mobjects == [G]
scene.play(G.animate.remove_vertices(2))
assert str(G) == "Graph on 3 vertices and 0 edges"
assert scene.mobjects == [G]
def construct(self):
G = Graph([], [], labels=True)
G.scale(0.45)
G.add_vertices(1, positions={1: [0, 0, 0]}, labels=True)
self.play(Create(G))
self.wait(10)