1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javap/WhitespaceTest.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,91 @@
1.4 +/*
1.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 8033581 8033798 8033726
1.30 + * @summary Check whitespace in generated output
1.31 + */
1.32 +
1.33 +import java.io.*;
1.34 +import java.util.*;
1.35 +
1.36 +public class WhitespaceTest {
1.37 + public static void main(String... args) throws Exception {
1.38 + new WhitespaceTest().run();
1.39 + }
1.40 +
1.41 + void run() throws Exception {
1.42 + test("-v", "java.lang.String");
1.43 + test("-XDtab:1", "-v", "java.lang.String");
1.44 +
1.45 + String testClasses = System.getProperty("test.classes");
1.46 + for (int i = 10; i < 40; i++)
1.47 + test("-XDtab:" + i, "-v", "-classpath", testClasses, "WhitespaceTest$HelloWorld");
1.48 +
1.49 + if (errors > 0)
1.50 + throw new Exception(errors + " errors found");
1.51 + }
1.52 +
1.53 + void test(String... args) throws Exception {
1.54 + // need to avoid "//" appearing as a constant in the constant pool
1.55 + String slash = "/";
1.56 + String doubleSlash = slash + slash;
1.57 + System.out.println("test: " + Arrays.asList(args));
1.58 + String out = javap(args);
1.59 + for (String line: out.split("[\r\n]+")) {
1.60 + if (line.endsWith(" "))
1.61 + error("line has trailing whitespace: " + line);
1.62 + int comment = line.indexOf(doubleSlash);
1.63 + if (comment > 0 && line.charAt(comment - 1) != ' ')
1.64 + error("no space before comment: " + line);
1.65 + if (line.matches(" +}"))
1.66 + error("bad indentation: " + line);
1.67 + }
1.68 + }
1.69 +
1.70 + String javap(String... args) throws Exception {
1.71 + StringWriter sw = new StringWriter();
1.72 + PrintWriter out = new PrintWriter(sw);
1.73 + int rc = com.sun.tools.javap.Main.run(args, out);
1.74 + out.close();
1.75 + System.out.println(sw.toString());
1.76 + if (rc < 0)
1.77 + throw new Exception("javap exited, rc=" + rc);
1.78 + return sw.toString();
1.79 + }
1.80 +
1.81 + void error(String msg) {
1.82 + System.out.println("Error: " + msg);
1.83 + errors++;
1.84 + }
1.85 +
1.86 + int errors;
1.87 +
1.88 + // small class to test repeatedly with different tab values
1.89 + static class HelloWorld {
1.90 + public static void main(String... args) {
1.91 + System.out.println("Hello World!");
1.92 + }
1.93 + }
1.94 +}
