def test_fused_gate():
gate = gates.FusedGate(0, 1)
gate.append(gates.H(0))
gate.append(gates.CNOT(0, 1))
assert len(gate.gates) == 2
gate.prepend(gates.TOFFOLI(0, 1, 2))
assert gate.qubits == (0, 1, 2)
assert len(gate.gates) == 3
assert isinstance(gate.gates[0], gates.TOFFOLI)
def test_toffoli():
c = Circuit(3)
c.add(gates.Y(0))
c.add(gates.TOFFOLI(0, 1, 2))
c.add(gates.X(1))
c.add(gates.TOFFOLI(0, 2, 1))
c.add(gates.Z(2))
c.add(gates.TOFFOLI(1, 2, 0))
target = f"""// Generated by QIBO {__version__}
OPENQASM 2.0;
include "qelib1.inc";
qreg q[3];
y q[0];
ccx q[0],q[1],q[2];
x q[1];
ccx q[0],q[2],q[1];
z q[2];
ccx q[1],q[2],q[0];"""
assert_strings_equal(c.to_qasm(), target)
def test_gate_types():
import collections
c = Circuit(3)
c.add(gates.H(0))
c.add(gates.H(1))
c.add(gates.X(2))
c.add(gates.CNOT(0, 2))
c.add(gates.CNOT(1, 2))
c.add(gates.TOFFOLI(0, 1, 2))
target_counter = collections.Counter({"h": 2, "x": 1, "cx": 2, "ccx": 1})
assert c.ngates == 6
assert c.gate_types == target_counter
def test_circuit_draw_line_wrap():
"""Test circuit text draw with line wrap."""
ref_line_wrap_50 = \
'q0: ─H─U1─U1─U1─U1───────────────────────────x───I───f ...\n' \
'q1: ───o──|──|──|──H─U1─U1─U1────────────────|─x─I───| ...\n' \
'q2: ──────o──|──|────o──|──|──H─U1─U1────────|─|─────| ...\n' \
'q3: ─────────o──|───────o──|────o──|──H─U1───|─x───M─| ...\n' \
'q4: ────────────o──────────o───────o────o──H─x───────f ...\n' \
'\n' \
'q0: ... ─o────gf───M─\n' \
'q1: ... ─U3───|──o─M─\n' \
'q2: ... ────X─gf─o─M─\n' \
'q3: ... ────o────o───\n' \
'q4: ... ────o────X───'
ref_line_wrap_30 = \
'q0: ─H─U1─U1─U1─U1──────────────── ...\n' \
'q1: ───o──|──|──|──H─U1─U1─U1───── ...\n' \
'q2: ──────o──|──|────o──|──|──H─U1 ...\n' \
'q3: ─────────o──|───────o──|────o─ ...\n' \
'q4: ────────────o──────────o────── ...\n' \
'\n' \
'q0: ... ───────────x───I───f─o────gf── ...\n' \
'q1: ... ───────────|─x─I───|─U3───|──o ...\n' \
'q2: ... ─U1────────|─|─────|────X─gf─o ...\n' \
'q3: ... ─|──H─U1───|─x───M─|────o────o ...\n' \
'q4: ... ─o────o──H─x───────f────o────X ...\n' \
'\n' \
'q0: ... ─M─\n' \
'q1: ... ─M─\n' \
'q2: ... ─M─\n' \
'q3: ... ───\n' \
'q4: ... ───'
import numpy as np
circuit = Circuit(5)
for i1 in range(5):
circuit.add(gates.H(i1))
for i2 in range(i1 + 1, 5):
circuit.add(gates.CU1(i2, i1, theta=0))
circuit.add(gates.SWAP(0, 4))
circuit.add(gates.SWAP(1, 3))
circuit.add(gates.I(*range(2)))
circuit.add(gates.M(3, collapse=True))
circuit.add(gates.fSim(0, 4, 0, 0))
circuit.add(gates.CU3(0, 1, 0, 0, 0))
circuit.add(gates.TOFFOLI(4, 3, 2))
circuit.add(gates.GeneralizedfSim(0, 2, np.eye(2), 0))
circuit.add(gates.X(4).controlled_by(1, 2, 3))
circuit.add(gates.M(*range(3)))
assert circuit.draw(line_wrap=50) == ref_line_wrap_50
assert circuit.draw(line_wrap=30) == ref_line_wrap_30
def test_summary():
c = Circuit(3)
c.add(gates.H(0))
c.add(gates.H(1))
c.add(gates.CNOT(0, 2))
c.add(gates.CNOT(1, 2))
c.add(gates.TOFFOLI(0, 1, 2))
c.add(gates.H(2))
target_summary = "\n".join([
"Circuit depth = 5", "Total number of gates = 6",
"Number of qubits = 3", "Most common gates:", "h: 3", "cx: 2", "ccx: 1"
])
assert c.summary() == target_summary
def test_gates_of_type():
c = Circuit(3)
c.add(gates.H(0))
c.add(gates.H(1))
c.add(gates.CNOT(0, 2))
c.add(gates.X(1))
c.add(gates.CNOT(1, 2))
c.add(gates.TOFFOLI(0, 1, 2))
c.add(gates.H(2))
h_gates = c.gates_of_type(gates.H)
cx_gates = c.gates_of_type("cx")
assert h_gates == [(0, c.queue[0]), (1, c.queue[1]), (6, c.queue[6])]
assert cx_gates == [(2, c.queue[2]), (4, c.queue[4])]
with pytest.raises(TypeError):
c.gates_of_type(5)
def test_circuit_decompose(measurements):
c = Circuit(4)
c.add([gates.H(0), gates.X(1), gates.Y(2)])
c.add([gates.CZ(0, 1), gates.CNOT(2, 3), gates.TOFFOLI(0, 1, 3)])
if measurements:
c.add(gates.M(0, 2))
decompc = c.decompose()
dgates = []
for gate in c.queue:
dgates.extend(gate.decompose())
for g1, g2 in zip(decompc.queue, dgates):
assert isinstance(g1, g2.__class__)
assert g1.target_qubits == g2.target_qubits
assert g1.control_qubits == g2.control_qubits
if measurements:
assert decompc.measurement_gate.target_qubits == (0, 2)
assert decompc.measurement_tuples == {"register0": (0, 2)}
def test_toffoli_init():
gate = gates.TOFFOLI(0, 2, 1)
assert gate.target_qubits == (1,)
assert gate.control_qubits == (0, 2)
