def test_equals_2(self):
     self.assertEqual(dominator([1, 2, 3, 4, 5]), -1)
 def test_equals_5(self):
     self.assertEqual(dominator([]), -1)
 def test_equals(self):
     self.assertEqual(dominator([3, 4, 3, 2, 3, 1, 3, 3]), 3)
 def test_equals_4(self):
     self.assertEqual(dominator([1, 1, 1, 2, 2, 2, 2]), 2)