code: def testNegatives(self):
      value, index = MinMax()([3, 7, -45, 2, -1, 0])
      self.assertEqual(value, -45.0)
      self.assertEqual(index, 2)
  
file_path: essentia/test/src/unittests/stats/test_minmax.py
imports: from essentia.standard import MinMax
  from essentia_test import TestCase, TextTestRunner, allTests
label_desc: Use image node_id 7 for calling the TestMinMax obj's underlying member method code with example usage: obj.testNegatives() without return types