def test_reduce(self):
"""Test reduce"""
fer_op = FermionicOp("N") + FermionicOp("E") + FermionicOp("N")
reduced_op = fer_op.reduce()
self.assertSetEqual(frozenset(reduced_op.to_list()),
frozenset([("N", 2), ("E", 1)]))
fer_op = FermionicOp(("+", 1)) + FermionicOp(("-", 1j)) + FermionicOp(
("+", 1j))
reduced_op = fer_op.reduce()
self.assertSetEqual(frozenset(reduced_op.to_list()),
frozenset([("+", 1 + 1j), ("-", 1j)]))
def test_reduce(self):
"""Test reduce"""
with self.subTest("reduce integer"):
fer_op = FermionicOp("N") + FermionicOp("E") + FermionicOp("N")
reduced_op = fer_op.reduce()
targ = FermionicOp([("N", 2), ("E", 1)])
self.assertFermionEqual(reduced_op, targ)
with self.subTest("reduce complex"):
fer_op = FermionicOp(
"+") + 1j * FermionicOp("-") + 1j * FermionicOp("+")
reduced_op = fer_op.reduce()
targ = FermionicOp([("+", 1 + 1j), ("-", 1j)])
self.assertFermionEqual(reduced_op, targ)
