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separate_test.py
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separate_test.py
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# Copyright 2018 The Cirq Developers
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import cirq
from cirq.contrib.paulistring import convert_and_separate_circuit
def test_toffoli_separate():
q0, q1, q2 = cirq.LineQubit.range(3)
circuit = cirq.testing.nonoptimal_toffoli_circuit(q0, q1, q2)
c_left, c_right = convert_and_separate_circuit(circuit)
cirq.testing.assert_allclose_up_to_global_phase(
circuit.unitary(), (c_left + c_right).unitary(), atol=1e-7
)
assert all(isinstance(op, cirq.PauliStringPhasor) for op in c_left.all_operations())
assert all(
isinstance(op, cirq.GateOperation)
and isinstance(op.gate, (cirq.SingleQubitCliffordGate, cirq.CZPowGate))
for op in c_right.all_operations()
)