1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.jexl3.examples;
19
20 import org.junit.Assert;
21
22 /**
23 * Abstracts using a test within Junit or through a main method.
24 */
25 public abstract class Output {
26 /**
27 * Creates an output using System.out.
28 */
29 private Output() {
30 // nothing to do
31 }
32
33 /**
34 * Outputs the actual and value or checks the actual equals the expected value.
35 * @param expr the message to output
36 * @param actual the actual value to output
37 * @param expected the expected value
38 */
39 public abstract void print(String expr, Object actual, Object expected);
40
41 /**
42 * The output instance for Junit TestCase calling assertEquals.
43 */
44 public static final Output JUNIT = new Output() {
45 @Override
46 public void print(final String expr, final Object actual, final Object expected) {
47 Assert.assertEquals(expr, expected, actual);
48 }
49 };
50
51
52 /**
53 * The output instance for the general outputing to System.out.
54 */
55 public static final Output SYSTEM = new Output() {
56 @Override
57 public void print(final String expr, final Object actual, final Object expected) {
58 System.out.print(expr);
59 System.out.println(actual);
60 }
61 };
62 }