def test_evolution_operations(self, time, hamiltonian, steps, gates):
"""Tests that the sequence of gates implemented in the ApproxTimeEvolution template is correct"""
n_wires = 2
with qml._queuing.OperationRecorder() as rec:
ApproxTimeEvolution(hamiltonian, time, steps)
for i, gate in enumerate(rec.operations):
prep = [gate.parameters, gate.wires]
target = [gates[i].parameters, gates[i].wires]
assert prep == target
def circuit():
ApproxTimeEvolution(hamiltonian, time, steps)
return [qml.expval(qml.PauliZ(wires=i)) for i in range(n_wires)]