def test_gate_with_parameters_resolved_by(resolve_fn):
gate = cirq.PauliStringPhasorGate(dps_empty,
exponent_neg=sympy.Symbol('a'))
resolver = cirq.ParamResolver({'a': 0.1})
actual = resolve_fn(gate, resolver)
expected = cirq.PauliStringPhasorGate(dps_empty, exponent_neg=0.1)
assert actual == expected
def test_gate_inverse():
i = dps_empty
gate1 = cirq.PauliStringPhasorGate(i, exponent_neg=0.25)
gate2 = cirq.PauliStringPhasorGate(i, exponent_neg=-0.25)
gate3 = cirq.PauliStringPhasorGate(i, exponent_neg=sympy.Symbol('s'))
gate4 = cirq.PauliStringPhasorGate(i, exponent_neg=-sympy.Symbol('s'))
assert cirq.inverse(gate1) == gate2
assert cirq.inverse(gate3, None) == gate4
def test_gate_repr():
cirq.testing.assert_equivalent_repr(
cirq.PauliStringPhasorGate(dps_zyx,
exponent_neg=0.5,
exponent_pos=0.25))
cirq.testing.assert_equivalent_repr(
cirq.PauliStringPhasorGate(-dps_yx,
exponent_neg=-0.5,
exponent_pos=0.25))
def test_gate_pow():
s = dps_x
p = cirq.PauliStringPhasorGate(s, exponent_neg=0.25, exponent_pos=0.5)
assert p**0.5 == cirq.PauliStringPhasorGate(s,
exponent_neg=0.125,
exponent_pos=0.25)
with pytest.raises(TypeError, match='unsupported operand'):
_ = p**object()
assert p**1 == p
def test_gate_init():
a = cirq.LineQubit(0)
with pytest.raises(ValueError, match='eigenvalues'):
_ = cirq.PauliStringPhasorGate(1j * cirq.X(a))
v1 = cirq.PauliStringPhasorGate(cirq.DensePauliString('X', coefficient=-1),
exponent_neg=0.25,
exponent_pos=-0.5)
assert v1.dense_pauli_string == dps_x
assert v1.exponent_neg == -0.5
assert v1.exponent_pos == 0.25
v2 = cirq.PauliStringPhasorGate(dps_x,
exponent_neg=0.75,
exponent_pos=-0.125)
assert v2.dense_pauli_string == dps_x
assert v2.exponent_neg == 0.75
assert v2.exponent_pos == -0.125
def test_gate_str():
gate = cirq.PauliStringPhasorGate(
cirq.DensePauliString('ZYX', coefficient=+1))**0.5
assert str(gate) == '(+ZYX)**0.5'
gate = cirq.PauliStringPhasorGate(
cirq.DensePauliString('ZYX', coefficient=+1))**-0.5
assert str(gate) == '(+ZYX)**-0.5'
gate = cirq.PauliStringPhasorGate(
cirq.DensePauliString('ZYX', coefficient=-1))**-0.5
assert str(gate) == '(+ZYX)**0.5'
gate = cirq.PauliStringPhasorGate(cirq.DensePauliString('ZYX'),
exponent_pos=0.5,
exponent_neg=-0.5)
assert str(gate) == 'exp(iπ0.5*+ZYX)'
gate = (cirq.PauliStringPhasorGate(cirq.DensePauliString('ZYX'),
exponent_pos=0.5,
exponent_neg=-0.5)**-0.5)
assert str(gate) == 'exp(-iπ0.25*+ZYX)'
def test_gate_on():
q = cirq.LineQubit(0)
g1 = cirq.PauliStringPhasorGate(cirq.DensePauliString('X', coefficient=-1),
exponent_neg=0.25,
exponent_pos=-0.5)
op1 = g1.on(q)
assert isinstance(op1, cirq.PauliStringPhasor)
assert op1.qubits == (q, )
assert op1.gate == g1
assert op1.pauli_string == dps_x.on(q)
assert op1.exponent_neg == -0.5
assert op1.exponent_pos == 0.25
g2 = cirq.PauliStringPhasorGate(dps_x,
exponent_neg=0.75,
exponent_pos=-0.125)
op2 = g2.on(q)
assert isinstance(op2, cirq.PauliStringPhasor)
assert op2.qubits == (q, )
assert op2.gate == g2
assert op2.pauli_string == dps_x.on(q)
assert op2.exponent_neg == 0.75
assert op2.exponent_pos == -0.125
def test_gate_extrapolate_effect_with_symbol():
eq = cirq.testing.EqualsTester()
eq.add_equality_group(
cirq.PauliStringPhasorGate(dps_empty, exponent_neg=sympy.Symbol('a')),
cirq.PauliStringPhasorGate(dps_empty)**sympy.Symbol('a'),
)
eq.add_equality_group(
cirq.PauliStringPhasorGate(dps_empty)**sympy.Symbol('b'))
eq.add_equality_group(
cirq.PauliStringPhasorGate(dps_empty,
exponent_neg=0.5)**sympy.Symbol('b'))
eq.add_equality_group(
cirq.PauliStringPhasorGate(dps_empty,
exponent_neg=sympy.Symbol('a'))**0.5)
eq.add_equality_group(
cirq.PauliStringPhasorGate(
dps_empty, exponent_neg=sympy.Symbol('a'))**sympy.Symbol('b'))
def test_gate_equal_up_to_global_phase():
groups = [
[
cirq.PauliStringPhasorGate(dps_x, exponent_neg=0.25),
cirq.PauliStringPhasorGate(dps_x,
exponent_neg=0,
exponent_pos=-0.25),
cirq.PauliStringPhasorGate(dps_x,
exponent_pos=-0.125,
exponent_neg=0.125),
],
[cirq.PauliStringPhasorGate(dps_x)],
[cirq.PauliStringPhasorGate(dps_y, exponent_neg=0.25)],
[cirq.PauliStringPhasorGate(dps_xy, exponent_neg=0.25)],
]
for g1 in groups:
for e1 in g1:
assert not e1.equal_up_to_global_phase("not even close")
for g2 in groups:
for e2 in g2:
assert e1.equal_up_to_global_phase(e2) == (g1 is g2)
def test_gate_is_parameterized():
gate = cirq.PauliStringPhasorGate(dps_empty)
assert not cirq.is_parameterized(gate)
assert not cirq.is_parameterized(gate**0.1)
assert cirq.is_parameterized(gate**sympy.Symbol('a'))
def test_gate_extrapolate_effect():
gate1 = cirq.PauliStringPhasorGate(dps_empty, exponent_neg=0.5)
gate2 = cirq.PauliStringPhasorGate(dps_empty, exponent_neg=1.5)
gate3 = cirq.PauliStringPhasorGate(dps_empty, exponent_neg=0.125)
assert gate1**3 == gate2
assert gate1**0.25 == gate3
def test_gate_eq_ne_hash():
eq = cirq.testing.EqualsTester()
dps_xyx = cirq.DensePauliString('XYX')
eq.make_equality_group(
lambda: cirq.PauliStringPhasorGate(dps_empty, exponent_neg=0.5),
lambda: cirq.PauliStringPhasorGate(dps_empty, exponent_neg=-1.5),
lambda: cirq.PauliStringPhasorGate(dps_empty, exponent_neg=2.5),
)
eq.make_equality_group(
lambda: cirq.PauliStringPhasorGate(-dps_empty, exponent_neg=-0.5))
eq.add_equality_group(cirq.PauliStringPhasorGate(dps_xyz),
cirq.PauliStringPhasorGate(dps_xyz, exponent_neg=1))
eq.add_equality_group(cirq.PauliStringPhasorGate(-dps_xyz, exponent_neg=1))
eq.add_equality_group(cirq.PauliStringPhasorGate(dps_xyx),
cirq.PauliStringPhasorGate(dps_xyx, exponent_neg=1))
eq.add_equality_group(cirq.PauliStringPhasorGate(dps_xy),
cirq.PauliStringPhasorGate(dps_xy, exponent_neg=1))
eq.add_equality_group(cirq.PauliStringPhasorGate(dps_yx),
cirq.PauliStringPhasorGate(dps_yx, exponent_neg=1))
eq.add_equality_group(cirq.PauliStringPhasorGate(-dps_xyx, exponent_neg=1))
eq.add_equality_group(cirq.PauliStringPhasorGate(dps_xyx,
exponent_neg=0.5))
eq.add_equality_group(
cirq.PauliStringPhasorGate(-dps_xyx, exponent_neg=-0.5))
eq.add_equality_group(
cirq.PauliStringPhasorGate(dps_xyz, exponent_neg=sympy.Symbol('a')))
