--- /dev/null	2017-11-08 15:40:12.000000000 -0800
+++ new/core/JemmyCore/test/org/jemmy/image/pixel/PixelImageComparatorTest.java	2017-11-08 15:40:12.000000000 -0800
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2007, 2017 Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.jemmy.image.pixel;
+
+import org.jemmy.env.Environment;
+import org.jemmy.image.Image;
+import org.jemmy.image.pixel.Raster.Component;
+import org.testng.Assert;
+import org.testng.AssertJUnit;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.BeforeMethod;
+import org.testng.annotations.Test;
+
+
+public class PixelImageComparatorTest {
+    
+    private static Component[] supportedComps;
+    
+    private PixelImageComparator comparator; 
+    
+    @BeforeClass
+    public static void setUpClass() throws Exception {
+         supportedComps = new Component[] {
+            Component.RED, Component.GREEN, Component.BLUE, Component.ALPHA
+        };
+    }
+    
+    @BeforeMethod
+    public void setUp() {
+         comparator = new PixelImageComparator(new Environment()) {
+            @Override
+            protected Image toImage(Raster image) {
+                throw new UnsupportedOperationException("Not supported yet.");
+            }
+
+            @Override
+            protected Raster toRaster(Image image) {
+                throw new UnsupportedOperationException("Not supported yet.");
+            }
+
+            @Override
+            protected WriteableRaster createDiffRaster(Raster r1, Raster r2) {
+                throw new UnsupportedOperationException("Not supported yet.");
+            }
+        };
+    }
+    
+    @Test
+    public void testGetComponentsValueFunction() {
+        //Translucent colors
+        final double alpha = 0.5;
+        double[] black = new double[] { 0.0, 0.0, 0.0, alpha };
+        double[] white = new double[] { 1.0, 1.0, 1.0, alpha };
+        double result;
+        
+        result = comparator.getComponentValue(supportedComps, black, Component.RED);
+        AssertJUnit.assertEquals(0.5, result, 0.001);
+        
+        result = comparator.getComponentValue(supportedComps, white, Component.RED);
+        AssertJUnit.assertEquals(1.0, result, 0.001);
+        
+        //Opaque colors
+        black =  new double[] { 0.0, 0.0, 0.0, 1.0 };
+        white = new double[] { 1.0, 1.0, 1.0, 1.0 };
+        
+        result = comparator.getComponentValue(supportedComps, black, Component.RED);
+        AssertJUnit.assertEquals(0.0, result, 0.001);
+        
+        result = comparator.getComponentValue(supportedComps, white, Component.RED);
+        AssertJUnit.assertEquals(1.0, result, 0.001);
+        
+        //Transparent colors
+        black =  new double[] { 0.0, 0.0, 0.0, 0.0 };
+        white = new double[] { 1.0, 1.0, 1.0, 0.0 };
+        
+        result = comparator.getComponentValue(supportedComps, black, Component.RED);
+        AssertJUnit.assertEquals(1.0, result, 0.001);
+        
+        result = comparator.getComponentValue(supportedComps, white, Component.RED);
+        AssertJUnit.assertEquals(1.0, result, 0.001);
+    }
+    
+    @Test(expectedExceptions = IllegalStateException.class)
+    public void testAlphaOutOfBounds() {
+        double[] colors = new double[] { 0.0, 0.0, 0.1, 1.1 };
+        comparator.getComponentValue(supportedComps, colors, Component.RED);
+    }
+    
+    @Test(expectedExceptions = IllegalStateException.class)
+    public void testColorComponentOutOfBounds() {
+        double[] colors = new double[] { 1.1, 1.1, 1.1, 1.0 };
+        comparator.getComponentValue(supportedComps, colors, Component.RED);
+    }
+}