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Java example source code file (Arrrghs.java)

This example Java source code file (Arrrghs.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, arrrghs, c\:\\\\test, could, error, file, foo, ioexception, main, mia, regex, runtimeexception, string, testresult, util, x\\\\y\\\\z

The Arrrghs.java Java example source code

/*
 * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 5030233 6214916 6356475 6571029 6684582 6742159 4459600 6758881 6753938
 *      6894719 6968053 7151434 7146424 8007333
 * @summary Argument parsing validation.
 * @compile -XDignore.symbol.file Arrrghs.java
 * @run main/othervm Arrrghs
 */

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Arrrghs extends TestHelper {
    private Arrrghs(){}
    /**
     * This class provides various tests for arguments processing.
     * A group of tests to ensure that arguments are passed correctly to
     * a child java process upon a re-exec, this typically happens when
     * a version other than the one being executed is requested by the user.
     *
     * History: these set of tests  were part of Arrrghs.sh. The MKS shell
     * implementations were notoriously buggy. Implementing these tests purely
     * in Java is not only portable but also robust.
     *
     */

    // The version string to force a re-exec
    final static String VersionStr = "-version:1.1+";

    // The Cookie or the pattern we match in the debug output.
    final static String Cookie = "ReExec Args: ";

    /*
     * SIGH, On Windows all strings are quoted, we need to unwrap it
     */
    private static String removeExtraQuotes(String in) {
        if (isWindows) {
            // Trim the string and remove the enclosed quotes if any.
            in = in.trim();
            if (in.startsWith("\"") && in.endsWith("\"")) {
                return in.substring(1, in.length()-1);
            }
        }
        return in;
    }

    /*
     * This method detects the cookie in the output stream of the process.
     */
    private boolean detectCookie(InputStream istream,
            String expectedArguments) throws IOException {
        BufferedReader rd = new BufferedReader(new InputStreamReader(istream));
        boolean retval = false;

        String in = rd.readLine();
        while (in != null) {
            if (debug) System.out.println(in);
            if (in.startsWith(Cookie)) {
                String detectedArgument = removeExtraQuotes(in.substring(Cookie.length()));
                if (expectedArguments.equals(detectedArgument)) {
                    retval = true;
                } else {
                    System.out.println("Error: Expected Arguments\t:'" +
                            expectedArguments + "'");
                    System.out.println(" Detected Arguments\t:'" +
                            detectedArgument + "'");
                }
                // Return the value asap if not in debug mode.
                if (!debug) {
                    rd.close();
                    istream.close();
                    return retval;
                }
            }
            in = rd.readLine();
        }
        return retval;
    }

    private boolean doReExecTest0(ProcessBuilder pb, String expectedArguments) {
        boolean retval = false;
        try {
            pb.redirectErrorStream(true);
            Process p = pb.start();
            retval = detectCookie(p.getInputStream(), expectedArguments);
            p.waitFor();
            p.destroy();
        } catch (Exception ex) {
            ex.printStackTrace();
            throw new RuntimeException(ex.getMessage());
        }
        return retval;
    }

    /**
     * This method returns true  if the expected and detected arguments are the same.
     * Quoting could cause dissimilar testArguments and expected arguments.
     */
    int doReExecTest(String testArguments, String expectedPattern) {
        ProcessBuilder pb = new ProcessBuilder(javaCmd,
                VersionStr, testArguments);

        Map<String, String> env = pb.environment();
        env.put(JLDEBUG_KEY, "true");
        return doReExecTest0(pb, testArguments) ? 0 : 1;
    }

    /**
     * A convenience method for identical test pattern and expected arguments
     */
    int doReExecTest(String testPattern) {
        return doReExecTest(testPattern, testPattern);
    }

    @Test
    void testQuoteParsingThroughReExec() {
        /*
         * Tests for 6214916
         * These tests require that a JVM (any JVM) be installed in the system registry.
         * If none is installed, skip this test.
         */
        TestResult tr = doExec(javaCmd, VersionStr, "-version");
        if (!tr.isOK()) {
            System.err.println("Warning:Argument Passing Tests were skipped, " +
                    "no java found in system registry.");
            return;
        }

        // Basic test
        testExitValue += doReExecTest("-a -b -c -d");

        // Basic test with many spaces
        testExitValue += doReExecTest("-a    -b      -c       -d");

        // Quoted whitespace does matter ?
        testExitValue += doReExecTest("-a \"\"-b      -c\"\" -d");


        // Escaped quotes outside of quotes as literals
        testExitValue += doReExecTest("-a \\\"-b -c\\\" -d");

        // Check for escaped quotes inside of quotes as literal
        testExitValue += doReExecTest("-a \"-b \\\"stuff\\\"\" -c -d");

        // A quote preceeded by an odd number of slashes is a literal quote
        testExitValue += doReExecTest("-a -b\\\\\\\" -c -d");

        // A quote preceeded by an even number of slashes is a literal quote
        // see 6214916.
        testExitValue += doReExecTest("-a -b\\\\\\\\\" -c -d");

        // Make sure that whitespace doesn't interfere with the removal of the
        // appropriate tokens. (space-tab-space preceeds -jre-restict-search).
        testExitValue += doReExecTest("-a -b  \t -jre-restrict-search -c -d", "-a -b -c -d");

        // Make sure that the mJRE tokens being stripped, aren't stripped if
        // they happen to appear as arguments to the main class.
        testExitValue += doReExecTest("foo -version:1.1+");

        System.out.println("Completed arguments quoting tests with "
                + testExitValue + " errors");
    }
    // the pattern we hope to see in the output
    static final Pattern ArgPattern = Pattern.compile("\\s*argv\\[[0-9]*\\].*=.*");

    void checkArgumentParsing(String inArgs, String... expArgs) throws IOException {
        List<String> scratchpad = new ArrayList<>();
        scratchpad.add("set " + JLDEBUG_KEY + "=true");
        // GAK, -version needs to be added so that windows can flush its stderr
        // exiting the process prematurely can terminate the stderr.
        scratchpad.add(javaCmd + " -version " + inArgs);
        File batFile = new File("atest.bat");
        createAFile(batFile, scratchpad);

        TestResult tr = doExec(batFile.getName());

        ArrayList<String> expList = new ArrayList<>();
        expList.add(javaCmd);
        expList.add("-version");
        expList.addAll(Arrays.asList(expArgs));

        List<String> gotList = new ArrayList<>();
        for (String x : tr.testOutput) {
            Matcher m = ArgPattern.matcher(x);
            if (m.matches()) {
                String a[] = x.split("=");
                gotList.add(a[a.length - 1].trim());
            }
        }
        if (!gotList.equals(expList)) {
            System.out.println(tr);
            System.out.println("Expected args:");
            System.out.println(expList);
            System.out.println("Obtained args:");
            System.out.println(gotList);
            throw new RuntimeException("Error: args do not match");
        }
        System.out.println("\'" + inArgs + "\'" + " - Test passed");
    }

    /*
     * This tests general quoting and are specific to Windows, *nixes
     * need not worry about this, these have been tested with Windows
     * implementation and those that are known to work are used against
     * the java implementation. Note that the ProcessBuilder gets in the
     * way when testing some of these arguments, therefore we need to
     * create and execute a .bat file containing the arguments.
     */
    @Test
    void testArgumentParsing() throws IOException {
        if (!isWindows)
            return;
        // no quotes
        checkArgumentParsing("a b c d", "a", "b", "c", "d");

        // single quotes
        checkArgumentParsing("\"a b c d\"", "a b c d");

        //double quotes
        checkArgumentParsing("\"\"a b c d\"\"", "a", "b", "c", "d");

        // triple quotes
        checkArgumentParsing("\"\"\"a b c d\"\"\"", "\"a b c d\"");

        // a literal within single quotes
        checkArgumentParsing("\"a\"b c d\"e\"", "ab", "c", "de");

        // a literal within double quotes
        checkArgumentParsing("\"\"a\"b c d\"e\"\"", "ab c de");

        // a literal quote
        checkArgumentParsing("a\\\"b", "a\"b");

        // double back-slash
        checkArgumentParsing("\"a b c d\\\\\"", "a b c d\\");

        // triple back-slash
        checkArgumentParsing("a\\\\\\\"b", "a\\\"b");

        // dangling quote
        checkArgumentParsing("\"a b c\"\"", "a b c\"");

        // expansions of white space separators
        checkArgumentParsing("a b", "a", "b");
        checkArgumentParsing("a\tb", "a", "b");
        checkArgumentParsing("a \t b", "a", "b");

        checkArgumentParsing("\"C:\\TEST A\\\\\"", "C:\\TEST A\\");
        checkArgumentParsing("\"\"C:\\TEST A\\\\\"\"", "C:\\TEST", "A\\");

        // MS Windows tests
        // triple back-slash
        checkArgumentParsing("a\\\\\\d", "a\\\\\\d");

        // triple back-slash in quotes
        checkArgumentParsing("\"a\\\\\\d\"", "a\\\\\\d");

        // slashes separating characters
        checkArgumentParsing("X\\Y\\Z", "X\\Y\\Z");
        checkArgumentParsing("\\X\\Y\\Z", "\\X\\Y\\Z");

        // literals within dangling quotes, etc.
        checkArgumentParsing("\"a b c\" d e", "a b c", "d", "e");
        checkArgumentParsing("\"ab\\\"c\"  \"\\\\\"  d", "ab\"c", "\\", "d");
        checkArgumentParsing("a\\\\\\c d\"e f\"g h", "a\\\\\\c", "de fg", "h");
        checkArgumentParsing("a\\\\\\\"b c d", "a\\\"b", "c", "d");
        checkArgumentParsing("a\\\\\\\\\"g c\" d e", "a\\\\g c", "d", "e");

        // treatment of back-slashes
        checkArgumentParsing("*\\", "*\\");
        checkArgumentParsing("*/", "*/");
        checkArgumentParsing(".\\*", ".\\*");
        checkArgumentParsing("./*", "./*");
        checkArgumentParsing("..\\..\\*", "..\\..\\*");
        checkArgumentParsing("../../*", "../../*");
        checkArgumentParsing("..\\..\\", "..\\..\\");
        checkArgumentParsing("../../", "../../");
        checkArgumentParsing("a b\\ c", "a", "b\\", "c");
        // 2 back-slashes
        checkArgumentParsing("\\\\?", "\\\\?");
        // 3 back-slashes
        checkArgumentParsing("\\\\\\?", "\\\\\\?");
        // 4 back-slashes
        checkArgumentParsing("\\\\\\\\?", "\\\\\\\\?");
        // 5 back-slashes
        checkArgumentParsing("\\\\\\\\\\?", "\\\\\\\\\\?");
        // 6 back-slashes
        checkArgumentParsing("\\\\\\\\\\\\?", "\\\\\\\\\\\\?");

        // more treatment of  mixed slashes
        checkArgumentParsing("f1/ f3\\ f4/", "f1/", "f3\\", "f4/");
        checkArgumentParsing("f1/ f2\' ' f3/ f4/", "f1/", "f2\'", "'", "f3/", "f4/");
    }

    private void initEmptyDir(File emptyDir) throws IOException {
        if (emptyDir.exists()) {
            recursiveDelete(emptyDir);
        }
        emptyDir.mkdir();
    }

    private void initDirWithJavaFiles(File libDir) throws IOException {

        if (libDir.exists()) {
            recursiveDelete(libDir);
        }
        libDir.mkdirs();
        ArrayList<String> scratchpad = new ArrayList<>();
        scratchpad.add("package lib;");
        scratchpad.add("public class Fbo {");
        scratchpad.add("public static void main(String... args){Foo.f();}");
        scratchpad.add("public static void f(){}");
        scratchpad.add("}");
        createFile(new File(libDir, "Fbo.java"), scratchpad);

        scratchpad.clear();
        scratchpad.add("package lib;");
        scratchpad.add("public class Foo {");
        scratchpad.add("public static void main(String... args){");
        scratchpad.add("for (String x : args) {");
        scratchpad.add("System.out.println(x);");
        scratchpad.add("}");
        scratchpad.add("Fbo.f();");
        scratchpad.add("}");
        scratchpad.add("public static void f(){}");
        scratchpad.add("}");
        createFile(new File(libDir, "Foo.java"), scratchpad);
    }

    void checkArgumentWildcard(String inArgs, String... expArgs) throws IOException {
        String[] in = {inArgs};
        checkArgumentWildcard(in, expArgs);

        // now add arbitrary arguments before and after
        String[] outInArgs = { "-Q", inArgs, "-R"};

        String[] outExpArgs = new String[expArgs.length + 2];
        outExpArgs[0] = "-Q";
        System.arraycopy(expArgs, 0, outExpArgs, 1, expArgs.length);
        outExpArgs[expArgs.length + 1] = "-R";
        checkArgumentWildcard(outInArgs, outExpArgs);
    }

    void checkArgumentWildcard(String[] inArgs, String[] expArgs) throws IOException {
        ArrayList<String> argList = new ArrayList<>();
        argList.add(javaCmd);
        argList.add("-cp");
        argList.add("lib" + File.separator + "*");
        argList.add("lib.Foo");
        argList.addAll(Arrays.asList(inArgs));
        String[] cmds = new String[argList.size()];
        argList.toArray(cmds);
        TestResult tr = doExec(cmds);
        if (!tr.isOK()) {
            System.out.println(tr);
            throw new RuntimeException("Error: classpath single entry wildcard entry");
        }

        ArrayList<String> expList = new ArrayList<>();
        expList.addAll(Arrays.asList(expArgs));

        List<String> gotList = new ArrayList<>();
        for (String x : tr.testOutput) {
            gotList.add(x.trim());
        }
        if (!gotList.equals(expList)) {
            System.out.println(tr);
            System.out.println("Expected args:");
            System.out.println(expList);
            System.out.println("Obtained args:");
            System.out.println(gotList);
            throw new RuntimeException("Error: args do not match");
        }
        System.out.print("\'");
        for (String x : inArgs) {
            System.out.print(x + " ");
        }
        System.out.println("\'" + " - Test passed");
    }

    /*
     * These tests are not expected to work on *nixes, and are ignored.
     */
    @Test
    void testWildCardArgumentProcessing() throws IOException {
        if (!isWindows)
            return;
        File cwd = new File(".");
        File libDir = new File(cwd, "lib");
        initDirWithJavaFiles(libDir);
        initEmptyDir(new File(cwd, "empty"));

        // test if javac (the command) can compile *.java
        TestResult tr = doExec(javacCmd, libDir.getName() + File.separator + "*.java");
        if (!tr.isOK()) {
            System.out.println(tr);
            throw new RuntimeException("Error: compiling java wildcards");
        }

        // use the jar cmd to create jars using the ? wildcard
        File jarFoo = new File(libDir, "Foo.jar");
        tr = doExec(jarCmd, "cvf", jarFoo.getAbsolutePath(), "lib" + File.separator + "F?o.class");
        if (!tr.isOK()) {
            System.out.println(tr);
            throw new RuntimeException("Error: creating jar with wildcards");
        }

        // now the litmus test!, this should work
        checkArgumentWildcard("a", "a");

        // test for basic expansion
        checkArgumentWildcard("lib\\F*java", "lib\\Fbo.java", "lib\\Foo.java");

        // basic expansion in quotes
        checkArgumentWildcard("\"lib\\F*java\"", "lib\\F*java");

        checkArgumentWildcard("lib\\**", "lib\\Fbo.class", "lib\\Fbo.java",
                              "lib\\Foo.class", "lib\\Foo.jar", "lib\\Foo.java");

        checkArgumentWildcard("lib\\*?", "lib\\Fbo.class", "lib\\Fbo.java",
                              "lib\\Foo.class", "lib\\Foo.jar", "lib\\Foo.java");

        checkArgumentWildcard("lib\\?*", "lib\\Fbo.class", "lib\\Fbo.java",
                "lib\\Foo.class", "lib\\Foo.jar", "lib\\Foo.java");

        checkArgumentWildcard("lib\\?", "lib\\?");

        // test for basic expansion
        checkArgumentWildcard("lib\\*java", "lib\\Fbo.java", "lib\\Foo.java");

        // basic expansion in quotes
        checkArgumentWildcard("\"lib\\*.java\"", "lib\\*.java");

        // suffix expansion
        checkArgumentWildcard("lib\\*.class", "lib\\Fbo.class", "lib\\Foo.class");

        // suffix expansion in quotes
        checkArgumentWildcard("\"lib\\*.class\"", "lib\\*.class");

        // check for ? expansion now
        checkArgumentWildcard("lib\\F?o.java", "lib\\Fbo.java", "lib\\Foo.java");

        // check ? in quotes
        checkArgumentWildcard("\"lib\\F?o.java\"", "lib\\F?o.java");

        // check ? as suffixes
        checkArgumentWildcard("lib\\F?o.????", "lib\\Fbo.java", "lib\\Foo.java");

        // check ? in a leading role
        checkArgumentWildcard("lib\\???.java", "lib\\Fbo.java", "lib\\Foo.java");
        checkArgumentWildcard("\"lib\\???.java\"", "lib\\???.java");

        // check ? prefixed with -
        checkArgumentWildcard("-?", "-?");

        // check * prefixed with -
        checkArgumentWildcard("-*", "-*");

        // check on empty directory
        checkArgumentWildcard("empty\\*", "empty\\*");
        checkArgumentWildcard("empty\\**", "empty\\**");
        checkArgumentWildcard("empty\\?", "empty\\?");
        checkArgumentWildcard("empty\\??", "empty\\??");
        checkArgumentWildcard("empty\\*?", "empty\\*?");
        checkArgumentWildcard("empty\\?*", "empty\\?*");

    }

    void doArgumentCheck(String inArgs, String... expArgs) {
        Map<String, String> env = new HashMap<>();
        env.put(JLDEBUG_KEY, "true");
        TestResult tr = doExec(env, javaCmd, inArgs);
        System.out.println(tr);
        int sindex = tr.testOutput.indexOf("Command line args:");
        if (sindex < 0) {
            System.out.println(tr);
            throw new RuntimeException("Error: no output");
        }
        sindex++; // skip over the tag
        List<String> gotList = new ArrayList<>();
        for (String x : tr.testOutput.subList(sindex, sindex + expArgs.length)) {
            String a[] = x.split("=");
            gotList.add(a[a.length - 1].trim());
        }
        List<String> expList = Arrays.asList(expArgs);
        if (!gotList.equals(expList)) {
            System.out.println(tr);
            System.out.println("Expected args:");
            System.out.println(expList);
            System.out.println("Obtained args:");
            System.out.println(gotList);
            throw new RuntimeException("Error: args do not match");
        }
    }


    /*
     * These tests are usually run on non-existent targets to check error results
     */
    @Test
    void testBasicErrorMessages() {
        // Tests for 5030233
        TestResult tr = doExec(javaCmd, "-cp");
        tr.checkNegative();
        tr.isNotZeroOutput();
        if (!tr.testStatus)
            System.out.println(tr);

        tr = doExec(javaCmd, "-classpath");
        tr.checkNegative();
        tr.isNotZeroOutput();
        if (!tr.testStatus)
            System.out.println(tr);

        tr = doExec(javaCmd, "-jar");
        tr.checkNegative();
        tr.isNotZeroOutput();
        if (!tr.testStatus)
            System.out.println(tr);

        tr = doExec(javacCmd, "-cp");
        tr.checkNegative();
        tr.isNotZeroOutput();
        if (!tr.testStatus)
            System.out.println(tr);

        // Test for 6356475 "REGRESSION:"java -X" from cmdline fails"
        tr = doExec(javaCmd, "-X");
        tr.checkPositive();
        tr.isNotZeroOutput();
        if (!tr.testStatus)
            System.out.println(tr);

        tr = doExec(javaCmd, "-help");
        tr.checkPositive();
        tr.isNotZeroOutput();
        if (!tr.testStatus)
            System.out.println(tr);

        // 6753938, test for non-negative exit value for an incorrectly formed
        // command line,  '% java'
        tr = doExec(javaCmd);
        tr.checkNegative();
        tr.isNotZeroOutput();
        if (!tr.testStatus)
            System.out.println(tr);

        // 6753938, test for non-negative exit value for an incorrectly formed
        // command line,  '% java -Xcomp'
        tr = doExec(javaCmd, "-Xcomp");
        tr.checkNegative();
        tr.isNotZeroOutput();
        if (!tr.testStatus)
            System.out.println(tr);

        // 7151434, test for non-negative exit value for an incorrectly formed
        // command line, '% java -jar -W', note the bogus -W
        tr = doExec(javaCmd, "-jar", "-W");
        tr.checkNegative();
        tr.contains("Unrecognized option: -W");
        if (!tr.testStatus)
            System.out.println(tr);
    }

    /*
     * Tests various dispositions of the main method, these tests are limited
     * to English locales as they check for error messages that are localized.
     */
    @Test
    void testMainMethod() throws FileNotFoundException {
        if (!isEnglishLocale()) {
            return;
        }

        TestResult tr = null;

        // a missing class
        createJar("MIA", new File("some.jar"), new File("Foo"),
                (String[])null);
        tr = doExec(javaCmd, "-jar", "some.jar");
        tr.contains("Error: Could not find or load main class MIA");
        if (!tr.testStatus)
            System.out.println(tr);
        // use classpath to check
        tr = doExec(javaCmd, "-cp", "some.jar", "MIA");
        tr.contains("Error: Could not find or load main class MIA");
        if (!tr.testStatus)
            System.out.println(tr);

        // incorrect method access
        createJar(new File("some.jar"), new File("Foo"),
                "private static void main(String[] args){}");
        tr = doExec(javaCmd, "-jar", "some.jar");
        tr.contains("Error: Main method not found in class Foo");
        if (!tr.testStatus)
            System.out.println(tr);
        // use classpath to check
        tr = doExec(javaCmd, "-cp", "some.jar", "Foo");
        tr.contains("Error: Main method not found in class Foo");
        if (!tr.testStatus)
            System.out.println(tr);

        // incorrect return type
        createJar(new File("some.jar"), new File("Foo"),
                "public static int main(String[] args){return 1;}");
        tr = doExec(javaCmd, "-jar", "some.jar");
        tr.contains("Error: Main method must return a value of type void in class Foo");
        if (!tr.testStatus)
            System.out.println(tr);
        // use classpath to check
        tr = doExec(javaCmd, "-cp", "some.jar", "Foo");
        tr.contains("Error: Main method must return a value of type void in class Foo");
        if (!tr.testStatus)
            System.out.println(tr);

        // incorrect parameter type
        createJar(new File("some.jar"), new File("Foo"),
                "public static void main(Object[] args){}");
        tr = doExec(javaCmd, "-jar", "some.jar");
        tr.contains("Error: Main method not found in class Foo");
        if (!tr.testStatus)
            System.out.println(tr);
        // use classpath to check
        tr = doExec(javaCmd, "-cp", "some.jar", "Foo");
        tr.contains("Error: Main method not found in class Foo");
        if (!tr.testStatus)
            System.out.println(tr);

        // incorrect method type - non-static
         createJar(new File("some.jar"), new File("Foo"),
                "public void main(String[] args){}");
        tr = doExec(javaCmd, "-jar", "some.jar");
        tr.contains("Error: Main method is not static in class Foo");
        if (!tr.testStatus)
            System.out.println(tr);
        // use classpath to check
        tr = doExec(javaCmd, "-cp", "some.jar", "Foo");
        tr.contains("Error: Main method is not static in class Foo");
        if (!tr.testStatus)
            System.out.println(tr);

        // amongst a potpourri of kindred main methods, is the right one chosen ?
        createJar(new File("some.jar"), new File("Foo"),
            "void main(Object[] args){}",
            "int  main(Float[] args){return 1;}",
            "private void main() {}",
            "private static void main(int x) {}",
            "public int main(int argc, String[] argv) {return 1;}",
            "public static void main(String[] args) {System.out.println(\"THE_CHOSEN_ONE\");}");
        tr = doExec(javaCmd, "-jar", "some.jar");
        tr.contains("THE_CHOSEN_ONE");
        if (!tr.testStatus)
            System.out.println(tr);
        // use classpath to check
        tr = doExec(javaCmd, "-cp", "some.jar", "Foo");
        tr.contains("THE_CHOSEN_ONE");
        if (!tr.testStatus)
            System.out.println(tr);

        // test for extraneous whitespace in the Main-Class attribute
        createJar(" Foo ", new File("some.jar"), new File("Foo"),
                "public static void main(String... args){}");
        tr = doExec(javaCmd, "-jar", "some.jar");
        tr.checkPositive();
        if (!tr.testStatus)
            System.out.println(tr);
    }
    /*
     * tests 6968053, ie. we turn on the -Xdiag (for now) flag and check if
     * the suppressed stack traces are exposed, ignore these tests for localized
     * locales, limiting to English only.
     */
    @Test
    void testDiagOptions() throws FileNotFoundException {
        if (!isEnglishLocale()) { // only english version
            return;
        }
        TestResult tr = null;
        // a missing class
        createJar("MIA", new File("some.jar"), new File("Foo"),
                (String[])null);
        tr = doExec(javaCmd, "-Xdiag", "-jar", "some.jar");
        tr.contains("Error: Could not find or load main class MIA");
        tr.contains("java.lang.ClassNotFoundException: MIA");
        if (!tr.testStatus)
            System.out.println(tr);

        // use classpath to check
        tr = doExec(javaCmd,  "-Xdiag", "-cp", "some.jar", "MIA");
        tr.contains("Error: Could not find or load main class MIA");
        tr.contains("java.lang.ClassNotFoundException: MIA");
        if (!tr.testStatus)
            System.out.println(tr);

        // a missing class on the classpath
        tr = doExec(javaCmd, "-Xdiag", "NonExistentClass");
        tr.contains("Error: Could not find or load main class NonExistentClass");
        tr.contains("java.lang.ClassNotFoundException: NonExistentClass");
        if (!tr.testStatus)
            System.out.println(tr);
    }

    @Test
    static void testJreRestrictSearchFlag() {
        // test both arguments to ensure they exist
        TestResult tr = null;
        tr = doExec(javaCmd,
                "-no-jre-restrict-search", "-version");
        tr.checkPositive();
        if (!tr.testStatus)
            System.out.println(tr);

        tr = doExec(javaCmd,
                "-jre-restrict-search", "-version");
        tr.checkPositive();
        if (!tr.testStatus)
            System.out.println(tr);
    }

    /**
     * @param args the command line arguments
     * @throws java.io.FileNotFoundException
     */
    public static void main(String[] args) throws Exception {
        if (debug) {
            System.out.println("Starting Arrrghs tests");
        }
        Arrrghs a = new Arrrghs();
        a.run(args);
        if (testExitValue > 0) {
            System.out.println("Total of " + testExitValue + " failed");
            System.exit(1);
        } else {
            System.out.println("All tests pass");
        }
    }
}

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