001 /*
002 * Created on Jan 28, 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 static org.fest.util.Systems.LINE_SEPARATOR;
018
019 import java.io.File;
020 import java.io.InputStream;
021 import java.util.List;
022
023 /**
024 * Creates an error message indicating that an assertion that verifies that two files/inputStreams have equal content failed.
025 *
026 * @author Yvonne Wang
027 * @author Matthieu Baechler
028 */
029 public class ShouldHaveEqualContent extends BasicErrorMessageFactory {
030
031 /**
032 * Creates a new <code>{@link ShouldHaveEqualContent}</code>.
033 * @param actual the actual file in the failed assertion.
034 * @param expected the expected file in the failed assertion.
035 * @param diffs the differences between {@code actual} and {@code expected}.
036 * @return the created {@code ErrorMessageFactory}.
037 */
038 public static ErrorMessageFactory shouldHaveEqualContent(File actual, File expected, List<String> diffs) {
039 return new ShouldHaveEqualContent(actual, expected, diffsAsString(diffs));
040 }
041
042 /**
043 * Creates a new <code>{@link ShouldHaveEqualContent}</code>.
044 * @param actual the actual InputStream in the failed assertion.
045 * @param expected the expected Stream in the failed assertion.
046 * @param diffs the differences between {@code actual} and {@code expected}.
047 * @return the created {@code ErrorMessageFactory}.
048 */
049 public static ErrorMessageFactory shouldHaveEqualContent(InputStream actual, InputStream expected, List<String> diffs) {
050 return new ShouldHaveEqualContent(actual, expected, diffsAsString(diffs));
051 }
052
053 private static String diffsAsString(List<String> diffs) {
054 StringBuilder b = new StringBuilder();
055 for (String diff : diffs)
056 b.append(LINE_SEPARATOR).append(diff);
057 return b.toString();
058 }
059
060 private ShouldHaveEqualContent(File actual, File expected, String diffs) {
061 super("file:<%s> and file:<%s> do not have equal content:" + diffs, actual, expected);
062 }
063
064 private ShouldHaveEqualContent(InputStream actual, InputStream expected, String diffs) {
065 super("InputStreams do not have equal content:" + diffs, actual, expected);
066 }
067 }