def test_delete_edge_key_error():
"""Test if KeyError exception is raised."""
from simple_graph import Graph
graph = Graph()
graph.add_node('egg')
with pytest.raises(KeyError):
graph.delete_edge('dog', 'egg')
def test_delete_edge_key_error():
"""Test if KeyError exception is raised."""
from simple_graph import Graph
graph = Graph()
graph.add_node('egg')
with pytest.raises(KeyError):
graph.delete_edge('dog', 'egg')
def test_delete_edge_in_graph():
"""Test if an edge between two nodes is removed."""
from simple_graph import Graph
graph = Graph()
graph.add_node('chicken')
graph.add_node('egg')
graph.add_edge('egg', 'chicken')
graph.delete_edge('egg', 'chicken')
assert graph.container['egg'] == {}
def test_delete_edge_in_graph():
"""Test if an edge between two nodes is removed."""
from simple_graph import Graph
graph = Graph()
graph.add_node('chicken')
graph.add_node('egg')
graph.add_edge('egg', 'chicken')
graph.delete_edge('egg', 'chicken')
assert graph.container['egg'] == {}