1 /*
2 * $Id$
3 *
4 * Copyright (c) 1996, 2009, Oracle and/or its affiliates. All rights reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation. Oracle designates this
10 * particular file as subject to the "Classpath" exception as provided
11 * by Oracle in the LICENSE file that accompanied this code.
12 *
13 * This code is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 * version 2 for more details (a copy is included in the LICENSE file that
17 * accompanied this code).
18 *
19 * You should have received a copy of the GNU General Public License version
20 * 2 along with this work; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
22 *
23 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
24 * or visit www.oracle.com if you need additional information or have any
25 * questions.
26 */
27 package com.sun.javatest.finder;
28
29 import java.io.File;
30 import com.sun.javatest.TestDescription;
31 import com.sun.javatest.TestEnvironment;
32 import com.sun.javatest.TestFinder;
33 import com.sun.javatest.util.I18NResourceBundle;
34
35 /**
36 * A test finder that reads tests from a delegate, and returns the
37 * results in the reverse order. This is primarily for debugging
38 * and testing purposes.
39 */
40 public class ReverseTestFinder extends TestFinder
41 {
42
43 /**
44 * Default constructor
45 */
46 public ReverseTestFinder() {
47 }
48
49 /**
50 * Constructor to create ReverseTestFinder object when the
51 * original TestFinder instance is already created and initialized.
52 * Finders created with this constructor do not require the init() method
53 * to be invoked.
54 *
55 * @param delegate - the real test finder object.
56 */
57 public ReverseTestFinder(TestFinder delegate) {
58 this();
59 this.delegate = delegate;
60 }
61
62 /**
63 * Initialize the test finder.
64 * @param args The first entry in the array should be the name
65 * of the test finder to be used to actually read the tests;
66 * subsequent entries in the array will be passed through to
67 * the init method for that class.
68 * @param testSuiteRoot The root file of the test suite to be read.
69 * @param env An environment for the test finder to use if required.
70 * The ReverseTestFinder does not use this value directly;
71 * it just passes it on to the test finder to which it
72 * delegates the reading.
73 * @throws TestFinder.Fault if any problems occur during initialization.
74 */
75 public synchronized void init(String[] args, File testSuiteRoot,
76 TestEnvironment env) throws Fault {
77 String delegateClassName = args[0];
78 try {
79 Class<?> delegateClass = Class.forName(delegateClassName, true, ClassLoader.getSystemClassLoader());
80 delegate = (TestFinder)(delegateClass.newInstance());
81 args = shift(args, 1);
82 delegate.init(args, testSuiteRoot, env);
83 }
84 catch (Throwable t) {
85 throw new Fault(i18n, "reverse.cantInitDelegate", t);
86 }
87 }
88
89 public File getRoot() {
90 return delegate.getRoot();
91 }
92
93 public File getRootDir() {
94 return delegate.getRootDir();
95 }
96
97 public void read(File file) {
98 delegate.read(file);
99 }
100
101 public TestDescription[] getTests() {
102 TestDescription[] tds = delegate.getTests();
103 if (tds != null) {
104 int n = tds.length;
105 for (int i = 0; i < n/2; i++) {
106 TestDescription temp = tds[i];
107 tds[i] = tds[n - 1 - i];
108 tds[n - 1 - i] = temp;
109 }
110 }
111 return tds;
112 }
113
114 public File[] getFiles() {
115 File[] fs = delegate.getFiles();
116 if (fs != null) {
117 int n = fs.length;
118 for (int i = 0; i < n/2; i++) {
119 File temp = fs[i];
120 fs[i] = fs[n - 1 - i];
121 fs[n - 1 - i] = temp;
122 }
123 }
124 return fs;
125 }
126
127 protected void scan(File file) {
128 throw new Error("should not be called!");
129 }
130
131 private String[] shift(String[] args, int n) {
132 String[] result = new String[args.length - n];
133 System.arraycopy(args, n, result, 0, result.length);
134 return result;
135 }
136
137 private TestFinder delegate;
138
139 private static I18NResourceBundle i18n = I18NResourceBundle.getBundleForClass(TagTestFinder.class);
140
141 }