Visual regression testing

diylc/diylc-swing/test/com/github/romankh3/image/comparison/ImageComparison.java

@@ -107,11 +107,6 @@ public class ImageComparison {
      */
     private boolean drawExcludedRectangles = false;
 
-    /**
-     * The difference in percent between two images.
-     */
-    private float differencePercent;
-
     /**
      * Flag for filling comparison difference rectangles.
      */

diylc/diylc-swing/test/com/github/romankh3/image/comparison/exception/ImageComparisonException.java

@@ -5,6 +5,8 @@ package com.github.romankh3.image.comparison.exception;
  */
 public final class ImageComparisonException extends RuntimeException {
 
+  private static final long serialVersionUID = 1L;
+
     /**
      * Constructs a new {@link ImageComparisonException} with the specified detail message.
      * The cause is not initialized, and may subsequently be initialized by a call to

diylc/diylc-swing/test/com/github/romankh3/image/comparison/exception/ImageNotFoundException.java

@@ -5,6 +5,8 @@ package com.github.romankh3.image.comparison.exception;
  */
 public class ImageNotFoundException extends RuntimeException {
 
+  private static final long serialVersionUID = 1L;
+
     /**
      * Constructs a new {@link ImageNotFoundException} with the specified detail message.
      * The cause is not initialized, and may subsequently be initialized by a call to