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 }