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_circuit_draw():
"""Test circuit text draw."""
ref = 'q0: ─H─U1─U1─U1─U1───────────────────────────x───\n' \
'q1: ───o──|──|──|──H─U1─U1─U1────────────────|─x─\n' \
'q2: ──────o──|──|────o──|──|──H─U1─U1────────|─|─\n' \
'q3: ─────────o──|───────o──|────o──|──H─U1───|─x─\n' \
'q4: ────────────o──────────o───────o────o──H─x───'
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))
assert circuit.draw() == ref
def test_gates_commute():
assert gates.H(0).commutes(gates.X(1))
assert gates.H(0).commutes(gates.H(1))
assert gates.H(0).commutes(gates.H(0))
assert not gates.H(0).commutes(gates.Y(0))
assert not gates.CNOT(0, 1).commutes(gates.SWAP(1, 2))
assert not gates.CNOT(0, 1).commutes(gates.H(1))
assert not gates.CNOT(0, 1).commutes(gates.Y(0).controlled_by(2))
assert not gates.CNOT(2, 3).commutes(gates.CNOT(3, 0))
assert gates.CNOT(0, 1).commutes(gates.Y(2).controlled_by(0))
def test_multiqubit_gates():
c = Circuit(2)
c.add(gates.H(0))
c.add(gates.CNOT(0, 1))
c.add(gates.X(1))
c.add(gates.SWAP(0, 1))
c.add(gates.X(0).controlled_by(1))
# `controlled_by` here falls back to CNOT and should work
target = f"""// Generated by QIBO {__version__}
OPENQASM 2.0;
include "qelib1.inc";
qreg q[2];
h q[0];
cx q[0],q[1];
x q[1];
swap q[0],q[1];
cx q[1],q[0];"""
assert_strings_equal(c.to_qasm(), target)
def test_swap_init():
gate = gates.SWAP(4, 3)
assert gate.target_qubits == (4, 3)