Wed, 24 Jun 2015 15:43:06 -0700
Merge
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /*
25 * @test
26 * @bug 8033581 8033798 8033726
27 * @summary Check whitespace in generated output
28 */
30 import java.io.*;
31 import java.util.*;
33 public class WhitespaceTest {
34 public static void main(String... args) throws Exception {
35 new WhitespaceTest().run();
36 }
38 void run() throws Exception {
39 test("-v", "java.lang.String");
40 test("-XDtab:1", "-v", "java.lang.String");
42 String testClasses = System.getProperty("test.classes");
43 for (int i = 10; i < 40; i++)
44 test("-XDtab:" + i, "-v", "-classpath", testClasses, "WhitespaceTest$HelloWorld");
46 if (errors > 0)
47 throw new Exception(errors + " errors found");
48 }
50 void test(String... args) throws Exception {
51 // need to avoid "//" appearing as a constant in the constant pool
52 String slash = "/";
53 String doubleSlash = slash + slash;
54 System.out.println("test: " + Arrays.asList(args));
55 String out = javap(args);
56 for (String line: out.split("[\r\n]+")) {
57 if (line.endsWith(" "))
58 error("line has trailing whitespace: " + line);
59 int comment = line.indexOf(doubleSlash);
60 if (comment > 0 && line.charAt(comment - 1) != ' ')
61 error("no space before comment: " + line);
62 if (line.matches(" +}"))
63 error("bad indentation: " + line);
64 }
65 }
67 String javap(String... args) throws Exception {
68 StringWriter sw = new StringWriter();
69 PrintWriter out = new PrintWriter(sw);
70 int rc = com.sun.tools.javap.Main.run(args, out);
71 out.close();
72 System.out.println(sw.toString());
73 if (rc < 0)
74 throw new Exception("javap exited, rc=" + rc);
75 return sw.toString();
76 }
78 void error(String msg) {
79 System.out.println("Error: " + msg);
80 errors++;
81 }
83 int errors;
85 // small class to test repeatedly with different tab values
86 static class HelloWorld {
87 public static void main(String... args) {
88 System.out.println("Hello World!");
89 }
90 }
91 }