 
   describe 'transp() function', ->
 
-    it 'transposes a matrix to a new one', ->
+    it 'transposes a matrix to a new matrix', ->
       B = A.clone()
       C = B.transp() # tested function
       expect(C).toEqual M [ 1, 2

      expect(C).not.toBe B # not in place?
      expect(B).toEqual A # source unchanged ?

  describe 'toString() function', ->

    it 'should return the matrix as string', ->

      expect(B).toEqual A2_A # source unchanged ?
      expect(B2).toEqual A

    it 'adds two matrices to the second matrix', ->
      B = A2_A.clone()
      B2 = A.clone()
      C = B.add(B2, B2) # tested function
