code: def test_order_of_magnitude(self):
      assert predicates.orderOfMagnitude(10) == {"1"}
      assert predicates.orderOfMagnitude(9) == {"1"}
      assert predicates.orderOfMagnitude(2) == {"0"}
      assert predicates.orderOfMagnitude(-2) == set()
  
imports: import unittest
  from dedupe import predicates
label_desc: Use image node_id 1 for calling the TestNumericPredicates obj's underlying member method code with example usage: obj.test_order_of_magnitude() without return types