code: def testRealArray2DPoolSimple(self):
      expectedMat = array([[1, 2], [3, 4]])
  
      p = Pool()
      p.add("foo.bar", expectedMat)
  
      self.assertEqualMatrix(p["foo.bar"], [expectedMat])
  
imports: from essentia_test import *
label_desc: Use image node_id 25 for calling the TestPool obj's underlying member method code with example usage: obj.testRealArray2DPoolSimple() without return types