001 /*
002 * Created on Jan 24, 2011
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
005 * the License. You may obtain a copy of the License at
006 *
007 * http://www.apache.org/licenses/LICENSE-2.0
008 *
009 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
010 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
011 * specific language governing permissions and limitations under the License.
012 *
013 * Copyright @2011 the original author or authors.
014 */
015 package org.fest.assertions.error;
016
017 import org.fest.assertions.data.Offset;
018
019 /**
020 * Creates an error message that indicates an assertion that verifies that two images are equal failed.
021 *
022 * @author Yvonne Wang
023 */
024 public class ShouldBeEqualImages extends BasicErrorMessageFactory {
025
026 /**
027 * Creates a new <code>{@link ShouldBeEqualImages}</code>.
028 * @param offset helps decide if the color of two pixels are similar: two pixels that are identical to the human eye
029 * may still have slightly different color values. For example, by using an offset of 1 we can indicate that a blue
030 * value of 60 is similar to a blue value of 61.
031 * @return the created {@code ErrorMessageFactory}.
032 */
033 public static ErrorMessageFactory shouldBeEqualImages(Offset<Integer> offset) {
034 return new ShouldBeEqualImages(offset);
035 }
036
037 private ShouldBeEqualImages(Offset<Integer> offset) {
038 super("expecting images to be equal within offset:<%s>", offset.value);
039 }
040 }