def test_catstate_complex_error(self):
"""Test that passing a complex parameter to gates that previously accepted
complex parameters raises an error."""
with pytest.raises(ValueError, match="cannot be complex"):
prog = Program(1)
with prog.context as q:
ops.Catstate(0.2 + 1j) | q
eng = Engine("fock", backend_options={"cutoff_dim": 5})
res = eng.run(prog)
def test_complex_first_argument_error(self, gate):
"""Test that passing a complex parameter to gates that previously accepted
complex parameters raises an error."""
with pytest.raises(ValueError, match="cannot be complex"):
prog = Program(1)
with prog.context as q:
gate(0.2 + 1j) | q
eng = Engine("gaussian")
res = eng.run(prog)
def test_complex_symbolic(self, gate):
"""Test that passing a complex value to symbolic parameter of a gate
that previously accepted complex parameters raises an error.
An example here is testing heterodyne measurements.
"""
with pytest.raises(ValueError, match="cannot be complex"):
prog = Program(1)
with prog.context as q:
ops.MeasureHD | q[0]
gate(q[0].par) | q
eng = Engine("gaussian")
res = eng.run(prog)
def test_tf_batch_in_gates_previously_supporting_complex(gate):
"""Test if gates that previously accepted complex arguments support the input of TF tensors in
batch form"""
tf = pytest.importorskip("tensorflow")
batch_size = 2
prog = Program(1)
eng = Engine(backend="tf",
backend_options={
"cutoff_dim": 3,
"batch_size": batch_size
})
theta = prog.params("theta")
_theta = tf.Variable([0.1] * batch_size)
with prog.context as q:
gate(theta) | q[0]
eng.run(prog, args={"theta": _theta})
def test_tf_batch_complex_raise(gate):
"""Test if an error is raised if complex TF tensors with a batch dimension are input for gates
that previously accepted complex arguments"""
tf = pytest.importorskip("tensorflow")
batch_size = 2
prog = Program(1)
eng = Engine(backend="tf",
backend_options={
"cutoff_dim": 3,
"batch_size": batch_size
})
theta = prog.params("theta")
_theta = tf.Variable([0.1j] * batch_size)
with prog.context as q:
gate(theta) | q[0]
with pytest.raises(ValueError, match="cannot be complex"):
eng.run(prog, args={"theta": _theta})
def _setup_eng(num_subsystems):
"""Factory function"""
eng, q = Engine(num_subsystems)
eng.backend = setup_backend(num_subsystems)
return eng, q