def test_delete_node():
    """Delete selected node."""
    from simple_graph import Graph
    graph = Graph()
    graph.add_node('chicken')
    graph.add_node('egg')
    graph.delete_node('chicken')
    assert 'chicken' not in graph.container
def test_delete_node():
    """Delete selected node."""
    from simple_graph import Graph
    graph = Graph()
    graph.add_node('chicken')
    graph.add_node('egg')
    graph.delete_node('chicken')
    assert 'chicken' not in graph.container