public void TestAverageTwoDimension()
 {
     CollectionAssert.AreEqual(new double[, ]
     {
         { 2, 4, 5 },
         { 5, 9, 6 },
         { 5, 6, 9 }
     }, MultiDimensionArray.AverageTwoDimension(new int[, , ] {
         { { 1, 2, 3 }, { 3, 4, 5 }, { 4, 5, 6 } },
         { { 10, 5, 0 }, { 10, 9, 8 }, { 10, 4, 4 } },
         { { 5, 5, 5 }, { 0, 9, 9 }, { 9, 9, 9 } }
     }), new Comparer(0.01));
 }