diff --git a/test/unit.js b/test/unit.js
index 91b1512..d008508 100755
--- a/test/unit.js
+++ b/test/unit.js
@@ -190,7 +190,32 @@ vows.describe('Smoke Tests OpenCV').addBatch({
       }
     }
 
-    
+    , ".absDiff" : function(cv){
+      var mat1 = new cv.Matrix(1,1);
+      mat1.set(0,0, 0);
+
+      var mat2 = new cv.Matrix(1,1);
+      mat2.set(0,0, 1);
+
+      var diff = new cv.Matrix(1,1);
+      diff.absDiff(mat1, mat2);
+
+      assert.equal(diff.get(0,0), 1);
+    }
+
+    , ".bitwiseXor" : function(cv) {
+      var mat1 = new cv.Matrix(1,1);
+      mat1.set(0,0, 1);
+
+      var mat2 = new cv.Matrix(1,1);
+      mat2.set(0,0, 1);
+
+      var xored = new cv.Matrix(1,1);
+      xored.bitwiseXor(mat1, mat2);
+
+      assert.equal(xored.get(0,0), 0);
+    }
+
   }