def test_bell_state_to_from_qasm():
"""Tests cirq.Circuit --> QASM string --> cirq.Circuit
with a Bell state circuit.
"""
qreg = cirq.LineQubit.range(2)
cirq_circuit = cirq.Circuit(
[cirq.ops.H.on(qreg[0]), cirq.ops.CNOT.on(qreg[0], qreg[1])]
)
qasm = to_qasm(cirq_circuit) # Qasm from Cirq
circuit_cirq = from_qasm(qasm)
assert _equal(cirq_circuit, circuit_cirq)
def test_convert_with_barrier(as_qasm):
"""Tests converting a Qiskit circuit with a barrier to a Cirq circuit."""
n = 5
qiskit_circuit = qiskit.QuantumCircuit(qiskit.QuantumRegister(n))
qiskit_circuit.barrier()
if as_qasm:
cirq_circuit = from_qasm(qiskit_circuit.qasm())
else:
cirq_circuit = from_qiskit(qiskit_circuit)
assert _equal(cirq_circuit, cirq.Circuit())
def test_random_circuit_to_from_qasm():
"""Tests cirq.Circuit --> QASM string --> cirq.Circuit
with a random one-qubit circuit.
"""
cirq_circuit = cirq.testing.random_circuit(
qubits=2, n_moments=10, op_density=0.99, random_state=2
)
qasm = to_qasm(cirq_circuit)
circuit_cirq = from_qasm(qasm)
assert cirq.equal_up_to_global_phase(
cirq_circuit.unitary(), circuit_cirq.unitary()
)
def test_convert_with_multiple_barriers(as_qasm):
"""Tests converting a Qiskit circuit with barriers to a Cirq circuit."""
n = 1
num_ops = 10
qreg = qiskit.QuantumRegister(n)
qiskit_circuit = qiskit.QuantumCircuit(qreg)
for _ in range(num_ops):
qiskit_circuit.h(qreg)
qiskit_circuit.barrier()
if as_qasm:
cirq_circuit = from_qasm(qiskit_circuit.qasm())
else:
cirq_circuit = from_qiskit(qiskit_circuit)
qbit = cirq.LineQubit(0)
correct = cirq.Circuit(cirq.ops.H.on(qbit) for _ in range(num_ops))
assert _equal(cirq_circuit, correct)