def METHOD_NAME(self):
    # remove the last element because it causes an overflow because it is
    # too large
    self.assertAlmostEqualVector(
            UnaryOperator(type="db2lin")(self.testInput[:-1]),
            [1.25892544, 1.58489323, 1.99526227, 2.51188636, 2.18776178, 0.3161695],
            2e-7)