def test_is_normal_ordered_multiorder(self):
op = QuadOperator('p4 p3 p2 p1') + QuadOperator('p3 p2')
self.assertTrue(op.is_normal_ordered())
def test_is_gaussian_QuadOperator(self):
op = QuadOperator()
self.assertTrue(op.is_gaussian())
op = QuadOperator('')
self.assertTrue(op.is_gaussian())
op1 = QuadOperator('q0')
self.assertTrue(op1.is_gaussian())
op2 = QuadOperator('q0 q0')
self.assertTrue(op2.is_gaussian())
op3 = QuadOperator('p0')
self.assertTrue(op3.is_gaussian())
op4 = QuadOperator('p0 p0')
self.assertTrue(op4.is_gaussian())
op5 = QuadOperator('q0 p0')
self.assertTrue(op5.is_gaussian())
op6 = QuadOperator('q0 q0 q0')
self.assertFalse(op6.is_gaussian())
op = op1 + op2 + op3 + op4 + op5
self.assertTrue(op.is_gaussian())
op += op6
self.assertFalse(op.is_gaussian())
def test_is_normal_ordered_different_indices(self):
self.assertTrue(QuadOperator('p0 q5 q3 q2 q1').is_normal_ordered())
def test_is_normal_ordered_p(self):
self.assertTrue(QuadOperator('p0').is_normal_ordered())
def test_is_normal_ordered_reversed(self):
self.assertFalse(QuadOperator('p2 q2').is_normal_ordered())
def test_is_normal_ordered_number(self):
op = QuadOperator('q2 p2') * -1j
self.assertTrue(op.is_normal_ordered())
def test_is_normal_ordered_empty(self):
op = QuadOperator() * 2
self.assertTrue(op.is_normal_ordered())
