def test_nx_qubit_layout():
foxtail_graph = ccr.xmon_device_to_graph(cirq.google.Foxtail)
pos = ccr.nx_qubit_layout(foxtail_graph)
assert len(pos) == len(foxtail_graph)
for k, (x, y) in pos.items():
assert x == k.col
assert y == -k.row
def test_nx_qubit_layout():
grid_qubit_graph = ccr.gridqubits_to_graph_device(cirq.GridQubit.rect(5, 5))
pos = ccr.nx_qubit_layout(grid_qubit_graph)
assert len(pos) == len(grid_qubit_graph)
for k, (x, y) in pos.items():
assert x == k.col
assert y == -k.row
def test_nx_qubit_layout_2():
g = nx.from_edgelist(
[(cirq.LineQubit(0), cirq.LineQubit(1)), (cirq.LineQubit(1), cirq.LineQubit(2))]
)
pos = ccr.nx_qubit_layout(g)
for k, (x, y) in pos.items():
assert x == k.x
assert y == 0.5
def test_nx_qubit_layout_3():
g = nx.from_edgelist(
[(cirq.NamedQubit('a'), cirq.NamedQubit('b')), (cirq.NamedQubit('b'), cirq.NamedQubit('c'))]
)
node_to_i = {cirq.NamedQubit('a'): 0, cirq.NamedQubit('b'): 1, cirq.NamedQubit('c'): 2}
pos = ccr.nx_qubit_layout(g)
for k, (x, y) in pos.items():
assert x == 0.5
assert y == node_to_i[k] + 1
