def test_measurement_key_name(gate):
assert isinstance(cirq.measurement_key_name(gate), str)
assert cirq.measurement_key_name(gate) == 'door locker'
assert cirq.measurement_key_obj(gate) == cirq.MeasurementKey(
name='door locker')
assert cirq.measurement_key_name(gate, None) == 'door locker'
assert cirq.measurement_key_name(gate, NotImplemented) == 'door locker'
assert cirq.measurement_key_name(gate, 'a') == 'door locker'
def test_tagged_operation_forwards_protocols():
"""The results of all protocols applied to an operation with a tag should
be equivalent to the result without tags.
"""
q1 = cirq.GridQubit(1, 1)
q2 = cirq.GridQubit(1, 2)
h = cirq.H(q1)
tag = 'tag1'
tagged_h = cirq.H(q1).with_tags(tag)
np.testing.assert_equal(cirq.unitary(tagged_h), cirq.unitary(h))
assert cirq.has_unitary(tagged_h)
assert cirq.decompose(tagged_h) == cirq.decompose(h)
assert cirq.pauli_expansion(tagged_h) == cirq.pauli_expansion(h)
assert cirq.equal_up_to_global_phase(h, tagged_h)
assert np.isclose(cirq.kraus(h), cirq.kraus(tagged_h)).all()
assert cirq.measurement_key_name(
cirq.measure(q1, key='blah').with_tags(tag)) == 'blah'
assert cirq.measurement_key_obj(
cirq.measure(q1,
key='blah').with_tags(tag)) == cirq.MeasurementKey('blah')
parameterized_op = cirq.XPowGate(
exponent=sympy.Symbol('t'))(q1).with_tags(tag)
assert cirq.is_parameterized(parameterized_op)
resolver = cirq.study.ParamResolver({'t': 0.25})
assert cirq.resolve_parameters(
parameterized_op,
resolver) == cirq.XPowGate(exponent=0.25)(q1).with_tags(tag)
assert cirq.resolve_parameters_once(
parameterized_op,
resolver) == cirq.XPowGate(exponent=0.25)(q1).with_tags(tag)
assert parameterized_op._unitary_() is NotImplemented
assert parameterized_op._mixture_() is NotImplemented
assert parameterized_op._kraus_() is NotImplemented
y = cirq.Y(q1)
tagged_y = cirq.Y(q1).with_tags(tag)
assert tagged_y**0.5 == cirq.YPowGate(exponent=0.5)(q1)
assert tagged_y * 2 == (y * 2)
assert 3 * tagged_y == (3 * y)
assert cirq.phase_by(y, 0.125, 0) == cirq.phase_by(tagged_y, 0.125, 0)
controlled_y = tagged_y.controlled_by(q2)
assert controlled_y.qubits == (
q2,
q1,
)
assert isinstance(controlled_y, cirq.Operation)
assert not isinstance(controlled_y, cirq.TaggedOperation)
clifford_x = cirq.SingleQubitCliffordGate.X(q1)
tagged_x = cirq.SingleQubitCliffordGate.X(q1).with_tags(tag)
assert cirq.commutes(clifford_x, clifford_x)
assert cirq.commutes(tagged_x, clifford_x)
assert cirq.commutes(clifford_x, tagged_x)
assert cirq.commutes(tagged_x, tagged_x)
assert cirq.trace_distance_bound(y**0.001) == cirq.trace_distance_bound(
(y**0.001).with_tags(tag))
flip = cirq.bit_flip(0.5)(q1)
tagged_flip = cirq.bit_flip(0.5)(q1).with_tags(tag)
assert cirq.has_mixture(tagged_flip)
assert cirq.has_kraus(tagged_flip)
flip_mixture = cirq.mixture(flip)
tagged_mixture = cirq.mixture(tagged_flip)
assert len(tagged_mixture) == 2
assert len(tagged_mixture[0]) == 2
assert len(tagged_mixture[1]) == 2
assert tagged_mixture[0][0] == flip_mixture[0][0]
assert np.isclose(tagged_mixture[0][1], flip_mixture[0][1]).all()
assert tagged_mixture[1][0] == flip_mixture[1][0]
assert np.isclose(tagged_mixture[1][1], flip_mixture[1][1]).all()
qubit_map = {q1: 'q1'}
qasm_args = cirq.QasmArgs(qubit_id_map=qubit_map)
assert cirq.qasm(h, args=qasm_args) == cirq.qasm(tagged_h, args=qasm_args)
cirq.testing.assert_has_consistent_apply_unitary(tagged_h)