def test_size():
graph = Graph()
graph.add_node('apple')
assert graph.size() == 1
graph.add_node('banana')
assert graph.size() == 2
def test_size():
graph = Graph()
graph.add_node('a')
graph.add_node('b')
actual = graph.size()
expected = 2
assert expected == actual
def test_size_empty():
graph = Graph()
expected = 0
actual = graph.size()
assert actual == expected
def test_proper_size_is_returned():
g = Graph()
g.add_node('a')
g.add_node('b')
g.add_node('c')
g.add_node('d')
actual = g.size()
expected = 4
assert expected == actual
def test_size():
gr = Graph()
gr.add_node('ana')
gr.add_node('3nde')
gr.add_node('prop')
gr.add_node('bl')
gr.add_node('terminal')
gr.add_node(',')
gr.add_node('C.U..')
assert gr.size() == 7
def test_size():
graph = Graph()
graph.add_node('hello')
expected = 1
actual = graph.size()
assert actual == expected
def test_size_empty():
graph = Graph()
assert graph.size() == 0