def test_anyhashableg_as_weighted_with_caching_and_write_throught_with_unweighted(
):
g = create_graph(
directed=False,
allowing_self_loops=True,
allowing_multiple_edges=False,
weighted=False,
any_hashable=True,
)
g.add_vertex(0)
g.add_vertex(1)
g.add_edge(0, 1, edge=0)
with pytest.raises(ValueError):
g.set_edge_weight(0, 5.0)
with pytest.raises(ValueError):
g.edge_attrs[0]['weight'] = 5.0
assert g.get_edge_weight(0) == 1.0
def edge_weight(e):
return 100.5
with pytest.raises(ValueError):
wg = as_weighted(g,
edge_weight,
cache_weights=True,
write_weights_through=True)
def test_anyhashableg_as_weighted():
g = create_graph(
directed=False,
allowing_self_loops=True,
allowing_multiple_edges=False,
weighted=False,
any_hashable=True,
)
g.add_vertex('0')
g.add_vertex('1')
g.add_edge('0', '1', edge='0')
with pytest.raises(ValueError):
g.set_edge_weight('0', 5.0)
assert g.get_edge_weight('0') == 1.0
def edge_weight(e):
return 100.5
wg = as_weighted(g,
edge_weight,
cache_weights=False,
write_weights_through=False)
assert wg.get_edge_weight('0') == 100.5
print(g)
print(wg)
with pytest.raises(ValueError):
wg.set_edge_weight('0', 5.0)
def test_anyhashableg_as_weighted_with_None_function():
g = create_graph(
directed=False,
allowing_self_loops=True,
allowing_multiple_edges=False,
weighted=False,
any_hashable=True,
)
g.add_vertex(0)
g.add_vertex(1)
g.add_edge(0, 1, edge=0)
with pytest.raises(ValueError):
g.set_edge_weight(0, 5.0)
assert g.get_edge_weight(0) == 1.0
def edge_weight(e):
return 100.5
wg = as_weighted(g,
edge_weight_cb=None,
cache_weights=False,
write_weights_through=False)
assert wg.get_edge_weight(0) == 1.0
with pytest.raises(ValueError):
wg.set_edge_weight(0, 5.0)
def test_as_weighted_with_no_caching_and_write_through():
g = create_graph(
directed=False,
allowing_self_loops=True,
allowing_multiple_edges=False,
weighted=True,
)
g.add_vertex(0)
g.add_vertex(1)
g.add_edge(0, 1)
g.set_edge_weight(0, 5.0)
assert g.get_edge_weight(0) == 5.0
def edge_weight(e):
return 100.5
wg = as_weighted(g,
edge_weight,
cache_weights=False,
write_weights_through=True)
assert wg.get_edge_weight(0) == 100.5
with pytest.raises(ValueError):
wg.set_edge_weight(0, 5.0)
assert wg.get_edge_weight(0) == 100.5