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- from abp.graphstate import GraphState
- from abp import clifford
- import time
-
-
- def demograph():
- """ A graph for testing with """
- g = GraphState()
- g.add_edge(0, 1)
- g.add_edge(1, 2)
- g.add_edge(2, 0)
- g.add_edge(0, 3)
- g.add_edge(100, 200)
- return g
-
-
- def test_graph_basic():
- """ Test that we can construct graphs, delete edges, whatever """
- g = demograph()
- assert g.ngbh[0] == set([1, 2, 3])
- g.del_edge(0, 1)
- assert g.ngbh[0] == set([2, 3])
- assert g.has_edge(1, 2)
- assert not g.has_edge(0, 1)
-
-
- def test_local_complementation():
- """ Test that local complementation works as expected """
- g = demograph()
- g.local_complementation(0)
- assert g.has_edge(0, 1)
- assert g.has_edge(0, 2)
- assert not g.has_edge(1, 2)
- assert g.has_edge(3, 2)
- assert g.has_edge(3, 1)
-
- # TODO: test VOP conditions
-
-
- def test_remove_vop():
- """ Test that removing VOPs really works """
- g = demograph()
- g.remove_vop(0, 1)
- assert g.vops[0] == clifford.by_name["identity"]
- g.remove_vop(1, 1)
- assert g.vops[1] == clifford.by_name["identity"]
- g.remove_vop(2, 1)
- assert g.vops[2] == clifford.by_name["identity"]
- g.remove_vop(0, 1)
- assert g.vops[0] == clifford.by_name["identity"]
-
-
- def test_edgelist():
- """ Test making edgelists """
- g = demograph()
- el = g.edgelist()
- assert (0, 3) in el
- assert (0, 2) in el
- assert (100, 200) in el
-
-
- def test_stress():
- """ Testing that making a graph of ten thousand qubits takes less than half a second"""
- g = GraphState()
- t = time.clock()
- for i in xrange(100000):
- g.add_edge(i, i + 1)
- assert time.clock() - t < .5
-
-
- def test_cz():
- """ Test CZ gate """
- g = GraphState()
- g.add_vertex(0)
- g.add_vertex(1)
- g.act_local_rotation(0, clifford.by_name["hadamard"])
- g.act_local_rotation(1, clifford.by_name["hadamard"])
- g.act_local_rotation(1, clifford.by_name["py"])
- assert not g.has_edge(0, 1)
- g.act_cz(0, 1)
- assert g.has_edge(0, 1)
-
- def test_stabilizer():
- """ Test that we can generate stabilizers okay """
- g = demograph()
- stab = g.to_stabilizer()
- assert len(stab.split("\n")) == g.order()
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