def test_assemble_multi_schedules_with_wrong_number_of_multi_lo_configs(self):
"""Test assembling schedules, with a different number of lo configs (n:m setup)."""
with self.assertRaises(QiskitError):
assemble([self.schedule, self.schedule, self.schedule],
qobj_header=self.header,
default_qubit_los=self.default_qubit_lo_freq,
default_meas_los=self.default_meas_lo_freq,
schedule_los=[self.user_lo_config, self.user_lo_config],
**self.config)
def test_disassemble_single_circuit(self):
"""Test disassembling a single circuit."""
qr = QuantumRegister(2, name="q")
cr = ClassicalRegister(2, name="c")
circ = QuantumCircuit(qr, cr, name="circ")
circ.h(qr[0])
circ.cx(qr[0], qr[1])
circ.measure(qr, cr)
qubit_lo_freq = [5e9, 5e9]
meas_lo_freq = [6.7e9, 6.7e9]
qobj = assemble(
circ,
shots=2000,
memory=True,
qubit_lo_freq=qubit_lo_freq,
meas_lo_freq=meas_lo_freq,
)
circuits, run_config_out, headers = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 2)
self.assertEqual(run_config_out.memory_slots, 2)
self.assertEqual(run_config_out.shots, 2000)
self.assertEqual(run_config_out.memory, True)
self.assertEqual(run_config_out.qubit_lo_freq, qubit_lo_freq)
self.assertEqual(run_config_out.meas_lo_freq, meas_lo_freq)
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], circ)
self.assertEqual({}, headers)
def test_disassemble_schedule_los(self):
"""Test disassembling schedule los."""
d0 = pulse.DriveChannel(0)
m0 = pulse.MeasureChannel(0)
d1 = pulse.DriveChannel(1)
m1 = pulse.MeasureChannel(1)
sched0 = pulse.Schedule()
sched1 = pulse.Schedule()
schedule_los = [
{
d0: 4.5e9,
d1: 5e9,
m0: 6e9,
m1: 7e9
},
{
d0: 5e9,
d1: 4.5e9,
m0: 7e9,
m1: 6e9
},
]
qobj = assemble([sched0, sched1],
backend=self.backend,
schedule_los=schedule_los)
_, run_config_out, _ = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.schedule_los, schedule_los)
def test_disassemble_multiple_circuits(self):
"""Test disassembling multiple circuits, all should have the same config."""
qr0 = QuantumRegister(2, name="q0")
qc0 = ClassicalRegister(2, name="c0")
circ0 = QuantumCircuit(qr0, qc0, name="circ0")
circ0.h(qr0[0])
circ0.cx(qr0[0], qr0[1])
circ0.measure(qr0, qc0)
qr1 = QuantumRegister(3, name="q1")
qc1 = ClassicalRegister(3, name="c1")
circ1 = QuantumCircuit(qr1, qc1, name="circ0")
circ1.h(qr1[0])
circ1.cx(qr1[0], qr1[1])
circ1.cx(qr1[0], qr1[2])
circ1.measure(qr1, qc1)
qobj = assemble([circ0, circ1], shots=100, memory=False, seed=6)
circuits, run_config_out, headers = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 3)
self.assertEqual(run_config_out.memory_slots, 3)
self.assertEqual(run_config_out.shots, 100)
self.assertEqual(run_config_out.memory, False)
self.assertEqual(run_config_out.seed, 6)
self.assertEqual(len(circuits), 2)
for circuit in circuits:
self.assertIn(circuit, [circ0, circ1])
self.assertEqual({}, headers)
def test_single_circuit_delay_calibrations(self):
"""Test that disassembler parses delay instruction back to delay gate."""
qc = QuantumCircuit(2)
qc.append(Gate("test", 1, []), [0])
test_sched = pulse.Delay(64, pulse.DriveChannel(0)) + pulse.Delay(
160, pulse.DriveChannel(0)
)
qc.add_calibration("test", [0], test_sched)
qobj = assemble(qc, FakeOpenPulse2Q())
output_circuits, _, _ = disassemble(qobj)
self.assertEqual(len(qc.calibrations), len(output_circuits[0].calibrations))
self.assertEqual(qc.calibrations.keys(), output_circuits[0].calibrations.keys())
self.assertTrue(
all(
qc_cal.keys() == out_qc_cal.keys()
for qc_cal, out_qc_cal in zip(
qc.calibrations.values(), output_circuits[0].calibrations.values()
)
)
)
self.assertEqual(
qc.calibrations["test"][((0,), ())], output_circuits[0].calibrations["test"][((0,), ())]
)
def test_parametric_pulse_circuit_calibrations(self):
"""Test that disassembler parses parametric pulses back to pulse gates."""
with pulse.build() as h_sched:
pulse.play(pulse.library.Drag(50, 0.15, 4, 2), pulse.DriveChannel(0))
qc = QuantumCircuit(2)
qc.h(0)
qc.add_calibration("h", [0], h_sched)
backend = FakeOpenPulse2Q()
backend.configuration().parametric_pulses = ["drag"]
qobj = assemble(qc, backend)
output_circuits, _, _ = disassemble(qobj)
out_qc = output_circuits[0]
self.assertCircuitCalibrationsEqual([qc], output_circuits)
self.assertTrue(
all(
qc_sched.instructions == out_qc_sched.instructions
for (_, qc_gate), (_, out_qc_gate) in zip(
qc.calibrations.items(), out_qc.calibrations.items()
)
for qc_sched, out_qc_sched in zip(qc_gate.values(), out_qc_gate.values())
),
)
def test_assemble_multiple_circuits(self):
"""Test assembling multiple circuits, all should have the same config.
"""
qr0 = QuantumRegister(2, name='q0')
qc0 = ClassicalRegister(2, name='c0')
circ0 = QuantumCircuit(qr0, qc0, name='circ0')
circ0.h(qr0[0])
circ0.cx(qr0[0], qr0[1])
circ0.measure(qr0, qc0)
qr1 = QuantumRegister(3, name='q1')
qc1 = ClassicalRegister(3, name='c1')
circ1 = QuantumCircuit(qr1, qc1, name='circ0')
circ1.h(qr1[0])
circ1.cx(qr1[0], qr1[1])
circ1.cx(qr1[0], qr1[2])
circ1.measure(qr1, qc1)
qobj = assemble([circ0, circ1], shots=100, memory=False, seed=6)
self.assertIsInstance(qobj, QasmQobj)
self.assertEqual(qobj.config.seed_simulator, 6)
self.assertEqual(len(qobj.experiments), 2)
self.assertEqual(qobj.experiments[1].config.n_qubits, 3)
self.assertEqual(len(qobj.experiments), 2)
self.assertEqual(len(qobj.experiments[1].instructions), 6)
def test_disassemble_single_schedule(self):
"""Test disassembling a single schedule."""
d0 = pulse.DriveChannel(0)
d1 = pulse.DriveChannel(1)
with pulse.build(self.backend) as sched:
with pulse.align_right():
pulse.play(pulse.library.Constant(10, 1.0), d0)
pulse.set_phase(1.0, d0)
pulse.shift_phase(3.11, d0)
pulse.set_frequency(1e9, d0)
pulse.shift_frequency(1e7, d0)
pulse.delay(20, d0)
pulse.delay(10, d1)
pulse.play(pulse.library.Constant(8, 0.1), d1)
pulse.measure_all()
qobj = assemble(sched, backend=self.backend, shots=2000)
scheds, run_config_out, _ = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.memory_slots, 2)
self.assertEqual(run_config_out.shots, 2000)
self.assertEqual(run_config_out.memory, False)
self.assertEqual(run_config_out.meas_level, 2)
self.assertEqual(run_config_out.meas_lo_freq,
self.backend.defaults().meas_freq_est)
self.assertEqual(run_config_out.qubit_lo_freq,
self.backend.defaults().qubit_freq_est)
self.assertEqual(run_config_out.rep_time, 99)
self.assertEqual(len(scheds), 1)
self.assertEqual(scheds[0], target_qobj_transform(sched))
def test_assemble_circuits_binds_parameters(self):
"""Verify assemble_circuits applies parameter bindings and output circuits are bound."""
qr = QuantumRegister(1)
qc1 = QuantumCircuit(qr)
qc2 = QuantumCircuit(qr)
x = Parameter('x')
y = Parameter('y')
qc1.u2(x, y, qr[0])
qc2.rz(x, qr[0])
qc2.rz(y, qr[0])
bind_args = {'parameter_binds': [{x: 0, y: 0},
{x: 1, y: 0},
{x: 1, y: 1}]}
qobj = assemble([qc1, qc2], **bind_args)
self.assertEqual(len(qobj.experiments), 6)
self.assertEqual([len(expt.instructions) for expt in qobj.experiments],
[1, 1, 1, 2, 2, 2])
self.assertEqual(qobj.experiments[0].instructions[0].params, [0, 0])
self.assertEqual(qobj.experiments[1].instructions[0].params, [1, 0])
self.assertEqual(qobj.experiments[2].instructions[0].params, [1, 1])
self.assertEqual(qobj.experiments[3].instructions[0].params, [0])
self.assertEqual(qobj.experiments[3].instructions[1].params, [0])
self.assertEqual(qobj.experiments[4].instructions[0].params, [1])
self.assertEqual(qobj.experiments[4].instructions[1].params, [0])
self.assertEqual(qobj.experiments[5].instructions[0].params, [1])
self.assertEqual(qobj.experiments[5].instructions[1].params, [1])
def test_assemble_multi_schedules_without_lo_config(self):
"""Test assembling schedules, no lo config."""
qobj = assemble([self.schedule, self.schedule],
qobj_header=self.header,
default_qubit_los=self.default_qubit_lo_freq,
default_meas_los=self.default_meas_lo_freq,
**self.config)
test_dict = qobj.to_dict()
self.assertListEqual(test_dict['config']['qubit_lo_freq'], [4.9, 5.0])
self.assertEqual(len(test_dict['experiments']), 2)
self.assertEqual(len(test_dict['experiments'][0]['instructions']), 2)
def test_assemble_initialize(self):
"""Test assembling a circuit with an initialize.
"""
q = QuantumRegister(2, name='q')
circ = QuantumCircuit(q, name='circ')
circ.initialize([1/np.sqrt(2), 0, 0, 1/np.sqrt(2)], q[:])
qobj = assemble(circ)
self.assertIsInstance(qobj, QasmQobj)
self.assertEqual(qobj.experiments[0].instructions[0].name, 'initialize')
np.testing.assert_almost_equal(qobj.experiments[0].instructions[0].params,
[0.7071067811865, 0, 0, 0.707106781186])
def test_disassemble_parametric_pulses(self):
"""Test disassembling multiple schedules all should have the same config."""
d0 = pulse.DriveChannel(0)
with pulse.build(self.backend) as sched:
with pulse.align_right():
pulse.play(pulse.library.Constant(10, 1.0), d0)
pulse.play(pulse.library.Gaussian(10, 1.0, 2.0), d0)
pulse.play(pulse.library.GaussianSquare(10, 1.0, 2.0, 3), d0)
pulse.play(pulse.library.Drag(10, 1.0, 2.0, 0.1), d0)
qobj = assemble(sched, backend=self.backend, shots=2000)
scheds, _, _ = disassemble(qobj)
self.assertEqual(scheds[0], target_qobj_transform(sched))
def test_assemble_no_run_config(self):
"""Test assembling with no run_config, relying on default.
"""
qr = QuantumRegister(2, name='q')
qc = ClassicalRegister(2, name='c')
circ = QuantumCircuit(qr, qc, name='circ')
circ.h(qr[0])
circ.cx(qr[0], qr[1])
circ.measure(qr, qc)
qobj = assemble(circ)
self.assertIsInstance(qobj, QasmQobj)
self.assertEqual(qobj.config.shots, 1024)
def test_assemble_single_schedule_with_lo_config_dict(self):
"""Test assembling a single schedule, with a single lo config supplied as dictionary."""
qobj = assemble(self.schedule,
qobj_header=self.header,
default_qubit_los=self.default_qubit_lo_freq,
default_meas_los=self.default_meas_lo_freq,
schedule_los=self.user_lo_config_dict,
**self.config)
test_dict = qobj.to_dict()
self.assertListEqual(test_dict['config']['qubit_lo_freq'], [4.91, 5.0])
self.assertEqual(len(test_dict['experiments']), 1)
self.assertEqual(len(test_dict['experiments'][0]['instructions']), 2)
def test_circuit_with_simple_conditional(self):
"""Verify disassemble handles a simple conditional on the only bits."""
qr = QuantumRegister(1)
cr = ClassicalRegister(1)
qc = QuantumCircuit(qr, cr)
qc.h(qr[0]).c_if(cr, 1)
qobj = assemble(qc)
circuits, run_config_out, header = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 1)
self.assertEqual(run_config_out.memory_slots, 1)
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], qc)
self.assertEqual({}, header)
def test_circuit_with_bit_conditional_1(self):
"""Verify disassemble handles conditional on a single bit."""
qr = QuantumRegister(2)
cr = ClassicalRegister(2)
qc = QuantumCircuit(qr, cr)
qc.h(qr[0]).c_if(cr[1], True)
qobj = assemble(qc)
circuits, run_config_out, header = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 2)
self.assertEqual(run_config_out.memory_slots, 2)
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], qc)
self.assertEqual({}, header)
def test_circuit_with_mcx(self):
"""Verify disassemble handles mcx gate - #6271."""
qr = QuantumRegister(5)
cr = ClassicalRegister(5)
qc = QuantumCircuit(qr, cr)
qc.mcx([0, 1, 2], 4)
qobj = assemble(qc)
circuits, run_config_out, header = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 5)
self.assertEqual(run_config_out.memory_slots, 5)
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], qc)
self.assertEqual({}, header)
def test_disassemble_initialize(self):
"""Test disassembling a circuit with an initialize."""
q = QuantumRegister(2, name="q")
circ = QuantumCircuit(q, name="circ")
circ.initialize([1 / np.sqrt(2), 0, 0, 1 / np.sqrt(2)], q[:])
qobj = assemble(circ)
circuits, run_config_out, header = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 2)
self.assertEqual(run_config_out.memory_slots, 0)
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], circ)
self.assertEqual({}, header)
def test_assemble_opaque_inst(self):
"""Test opaque instruction is assembled as-is"""
opaque_inst = Instruction(name='my_inst', num_qubits=4,
num_clbits=2, params=[0.5, 0.4])
q = QuantumRegister(6, name='q')
c = ClassicalRegister(4, name='c')
circ = QuantumCircuit(q, c, name='circ')
circ.append(opaque_inst, [q[0], q[2], q[5], q[3]], [c[3], c[0]])
qobj = assemble(circ)
self.assertIsInstance(qobj, QasmQobj)
self.assertEqual(len(qobj.experiments[0].instructions), 1)
self.assertEqual(qobj.experiments[0].instructions[0].name, 'my_inst')
self.assertEqual(qobj.experiments[0].instructions[0].qubits, [0, 2, 5, 3])
self.assertEqual(qobj.experiments[0].instructions[0].memory, [3, 0])
self.assertEqual(qobj.experiments[0].instructions[0].params, [0.5, 0.4])
def test_opaque_instruction(self):
"""Test the disassembler handles opaque instructions correctly."""
opaque_inst = Instruction(name="my_inst", num_qubits=4, num_clbits=2, params=[0.5, 0.4])
q = QuantumRegister(6, name="q")
c = ClassicalRegister(4, name="c")
circ = QuantumCircuit(q, c, name="circ")
circ.append(opaque_inst, [q[0], q[2], q[5], q[3]], [c[3], c[0]])
qobj = assemble(circ)
circuits, run_config_out, header = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 6)
self.assertEqual(run_config_out.memory_slots, 4)
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], circ)
self.assertEqual({}, header)
def test_assemble_multi_schedules_with_multi_lo_configs(self):
"""Test assembling schedules, with the same number of lo configs (n:n setup)."""
qobj = assemble([self.schedule, self.schedule],
qobj_header=self.header,
default_qubit_los=self.default_qubit_lo_freq,
default_meas_los=self.default_meas_lo_freq,
schedule_los=[self.user_lo_config, self.user_lo_config],
**self.config)
test_dict = qobj.to_dict()
self.assertListEqual(test_dict['config']['qubit_lo_freq'], [4.9, 5.0])
self.assertEqual(len(test_dict['experiments']), 2)
self.assertEqual(len(test_dict['experiments'][0]['instructions']), 2)
self.assertDictEqual(test_dict['experiments'][0]['experimentconfig'].to_dict(),
{'qubit_lo_freq': [4.91, 5.0]})
def test_assemble_single_schedule_with_multi_lo_configs(self):
"""Test assembling a single schedule, with lo configs (frequency sweep)."""
qobj = assemble(self.schedule,
qobj_header=self.header,
default_qubit_los=self.default_qubit_lo_freq,
default_meas_los=self.default_meas_lo_freq,
schedule_los=[self.user_lo_config, self.user_lo_config],
**self.config)
test_dict = qobj.to_dict()
self.assertListEqual(test_dict['config']['qubit_lo_freq'], [4.9, 5.0])
self.assertEqual(len(test_dict['experiments']), 2)
self.assertEqual(len(test_dict['experiments'][0]['instructions']), 2)
self.assertDictEqual(test_dict['experiments'][0]['experimentconfig'].to_dict(),
{'qubit_lo_freq': [4.91, 5.0]})
def test_assemble_single_circuit(self):
"""Test assembling a single circuit.
"""
qr = QuantumRegister(2, name='q')
cr = ClassicalRegister(2, name='c')
circ = QuantumCircuit(qr, cr, name='circ')
circ.h(qr[0])
circ.cx(qr[0], qr[1])
circ.measure(qr, cr)
qobj = assemble(circ, shots=2000, memory=True)
self.assertIsInstance(qobj, QasmQobj)
self.assertEqual(qobj.config.shots, 2000)
self.assertEqual(qobj.config.memory, True)
self.assertEqual(len(qobj.experiments), 1)
self.assertEqual(qobj.experiments[0].instructions[1].name, 'cx')
def test_disassemble_no_run_config(self):
"""Test disassembling with no run_config, relying on default."""
qr = QuantumRegister(2, name="q")
qc = ClassicalRegister(2, name="c")
circ = QuantumCircuit(qr, qc, name="circ")
circ.h(qr[0])
circ.cx(qr[0], qr[1])
circ.measure(qr, qc)
qobj = assemble(circ)
circuits, run_config_out, headers = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 2)
self.assertEqual(run_config_out.memory_slots, 2)
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], circ)
self.assertEqual({}, headers)
def test_circuit_with_conditionals(self):
"""Verify disassemble sets conditionals correctly."""
qr = QuantumRegister(2)
cr1 = ClassicalRegister(1)
cr2 = ClassicalRegister(2)
qc = QuantumCircuit(qr, cr1, cr2)
qc.measure(qr[0], cr1) # Measure not required for a later conditional
qc.measure(qr[1], cr2[1]) # Measure required for a later conditional
qc.h(qr[1]).c_if(cr2, 3)
qobj = assemble(qc)
circuits, run_config_out, header = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 2)
self.assertEqual(run_config_out.memory_slots, 3)
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], qc)
self.assertEqual({}, header)
def test_disassemble_isometry(self):
"""Test disassembling a circuit with an isometry."""
q = QuantumRegister(2, name="q")
circ = QuantumCircuit(q, name="circ")
circ.iso(qi.random_unitary(4).data, circ.qubits, [])
qobj = assemble(circ)
circuits, run_config_out, header = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, 2)
self.assertEqual(run_config_out.memory_slots, 0)
self.assertEqual(len(circuits), 1)
# params array
assert_allclose(circuits[0]._data[0][0].params[0], circ._data[0][0].params[0])
# all other data
self.assertEqual(circuits[0]._data[0][0].params[1:], circ._data[0][0].params[1:])
self.assertEqual(circuits[0]._data[0][1:], circ._data[0][1:])
self.assertEqual(circuits[0]._data[1:], circ._data[1:])
self.assertEqual({}, header)
def test_circuit_with_single_bit_conditions(self):
"""Verify disassemble handles a simple conditional on a single bit of a register."""
# This circuit would fail to perfectly round-trip if 'cr' below had only one bit in it.
# This is because the format of QasmQobj is insufficient to disambiguate single-bit
# conditions from conditions on registers with only one bit. Since single-bit conditions are
# mostly a hack for the QasmQobj format at all, `disassemble` always prefers to return the
# register if it can. It would also fail if registers overlap.
qr = QuantumRegister(1)
cr = ClassicalRegister(2)
qc = QuantumCircuit(qr, cr)
qc.h(qr[0]).c_if(cr[0], 1)
qobj = assemble(qc)
circuits, run_config_out, header = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.n_qubits, len(qr))
self.assertEqual(run_config_out.memory_slots, len(cr))
self.assertEqual(len(circuits), 1)
self.assertEqual(circuits[0], qc)
self.assertEqual({}, header)
def test_multi_circuit_uncommon_calibrations(self):
"""Test that disassembler parses uncommon calibrations (stored at QOBJ experiment-level)."""
with pulse.build() as sched:
pulse.play(pulse.library.Drag(50, 0.15, 4, 2), pulse.DriveChannel(0))
qc_0 = QuantumCircuit(2)
qc_0.h(0)
qc_0.append(RXGate(np.pi), [1])
qc_0.add_calibration("h", [0], sched)
qc_0.add_calibration(RXGate(np.pi), [1], sched)
qc_1 = QuantumCircuit(2)
qc_1.h(0)
circuits = [qc_0, qc_1]
qobj = assemble(circuits, FakeOpenPulse2Q())
output_circuits, _, _ = disassemble(qobj)
self.assertCircuitCalibrationsEqual(circuits, output_circuits)
def test_convert_to_bfunc_plus_conditional(self):
"""Verify assemble_circuits converts conditionals from QASM to Qobj."""
qr = QuantumRegister(1)
cr = ClassicalRegister(1)
qc = QuantumCircuit(qr, cr)
qc.h(qr[0]).c_if(cr, 1)
qobj = assemble(qc)
bfunc_op, h_op = qobj.experiments[0].instructions
self.assertEqual(bfunc_op.name, 'bfunc')
self.assertEqual(bfunc_op.mask, '0x1')
self.assertEqual(bfunc_op.val, '0x1')
self.assertEqual(bfunc_op.relation, '==')
self.assertTrue(hasattr(h_op, 'conditional'))
self.assertEqual(bfunc_op.register, h_op.conditional)
def test_measure_to_registers_when_conditionals(self):
"""Verify assemble_circuits maps all measure ops on to a register slot
for a circuit containing conditionals."""
qr = QuantumRegister(2)
cr1 = ClassicalRegister(1)
cr2 = ClassicalRegister(2)
qc = QuantumCircuit(qr, cr1, cr2)
qc.measure(qr[0], cr1) # Measure not required for a later conditional
qc.measure(qr[1], cr2[1]) # Measure required for a later conditional
qc.h(qr[1]).c_if(cr2, 3)
qobj = assemble(qc)
first_measure, second_measure = [op for op in qobj.experiments[0].instructions
if op.name == 'measure']
self.assertTrue(hasattr(first_measure, 'register'))
self.assertEqual(first_measure.register, first_measure.memory)
self.assertTrue(hasattr(second_measure, 'register'))
self.assertEqual(second_measure.register, second_measure.memory)