/*

 * Copyright (c) 2001, 2015, 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 4407397

 *  @summary Test the requesting of exception events

 *

 *  @author Robert Field

 *

 *  @modules jdk.jdi

 *  @run build TestScaffold VMConnection

 *  @run compile -g ExceptionEvents.java

 *

 *  @run driver ExceptionEvents N A StackOverflowCaughtTarg java.lang.Exception

 *  @run driver ExceptionEvents C A StackOverflowCaughtTarg null

 *  @run driver ExceptionEvents C A StackOverflowCaughtTarg java.lang.Error

 *  @run driver ExceptionEvents C A StackOverflowCaughtTarg java.lang.StackOverflowError

 *  @run driver ExceptionEvents N A StackOverflowCaughtTarg java.lang.NullPointerException

 *  @run driver ExceptionEvents N T StackOverflowCaughtTarg java.lang.Exception

 *  @run driver ExceptionEvents C T StackOverflowCaughtTarg null

 *  @run driver ExceptionEvents C T StackOverflowCaughtTarg java.lang.Error

 *  @run driver ExceptionEvents C T StackOverflowCaughtTarg java.lang.StackOverflowError

 *  @run driver ExceptionEvents N T StackOverflowCaughtTarg java.lang.NullPointerException

 *  @run driver ExceptionEvents N N StackOverflowCaughtTarg java.lang.Exception

 *  @run driver ExceptionEvents C N StackOverflowCaughtTarg null

 *  @run driver ExceptionEvents C N StackOverflowCaughtTarg java.lang.Error

 *  @run driver ExceptionEvents C N StackOverflowCaughtTarg java.lang.StackOverflowError

 *  @run driver ExceptionEvents N N StackOverflowCaughtTarg java.lang.NullPointerException

 *  @run driver ExceptionEvents N A StackOverflowUncaughtTarg java.lang.Exception

 *  @run driver ExceptionEvents U A StackOverflowUncaughtTarg null

 *  @run driver ExceptionEvents U A StackOverflowUncaughtTarg java.lang.Error

 *  @run driver ExceptionEvents U A StackOverflowUncaughtTarg java.lang.StackOverflowError

 *  @run driver ExceptionEvents N A StackOverflowUncaughtTarg java.lang.NullPointerException

 *  @run driver ExceptionEvents N T StackOverflowUncaughtTarg java.lang.NullPointerException

 *  @run driver ExceptionEvents N N StackOverflowUncaughtTarg java.lang.NullPointerException

 */

import com.sun.jdi.*;

import com.sun.jdi.event.*;

import com.sun.jdi.request.*;

import java.util.*;

class StackOverflowCaughtTarg {

    public static void main(String[] args) {

        try {

            throw new StackOverflowError();

        } catch (Throwable exc) {

            // ignore

        }

    }

}

class StackOverflowUncaughtTarg {

    public static void main(String[] args) {

        thrower();

    }

    static void thrower()  {

        throw new StackOverflowError();

    }

}

class StackOverflowIndirectTarg {

    public static void main(String[] args) {

        try {

            thrower();

        } catch (Throwable exc) {

            System.out.println("Got exception: " + exc);

        }

    }

    static void thrower()  {

        throw new StackOverflowError();

    }

}

public class ExceptionEvents extends TestScaffold {

    static int failureCount = 0;

    static StringBuffer tooManySummary = new StringBuffer();

    static StringBuffer notSentSummary = new StringBuffer();

    static StringBuffer unexpectedSummary = new StringBuffer();

    static int globalSuspendPolicy = -1;

    static String[] flags;

    final String target;

    final String exceptionName;

    final boolean caught;

    final boolean uncaught;

    final int suspendPolicy;

    int eventCount = 0;

    ExceptionRequest request;

    ExceptionEvents(String target,

                    String exceptionName,

                    boolean caught, boolean uncaught,

                    int suspendPolicy) {

        super(flags);

        this.target = target;

        this.exceptionName = exceptionName;

        this.caught = caught;

        this.uncaught = uncaught;

        this.suspendPolicy = suspendPolicy;

    }

    static void everything() throws Exception {

        goNeither("StackOverflowCaughtTarg", "java.lang.Exception");

        goCaught("StackOverflowCaughtTarg", null);

        goCaught("StackOverflowCaughtTarg", "java.lang.Error");

        goCaught("StackOverflowCaughtTarg", "java.lang.StackOverflowError");

        goNeither("StackOverflowCaughtTarg", "java.lang.NullPointerException");

        goNeither("StackOverflowUncaughtTarg", "java.lang.Exception");

        goUncaught("StackOverflowUncaughtTarg", null);

        goUncaught("StackOverflowUncaughtTarg", "java.lang.Error");

        goUncaught("StackOverflowUncaughtTarg", "java.lang.StackOverflowError");

        goNeither("StackOverflowUncaughtTarg", "java.lang.NullPointerException");

    }

    static void usage() throws Exception {

        System.err.println("Use either with no arguments or");

        System.err.println("  c|u|n a|t|n <TargetClass> <Exception>|null");

        System.err.println("or for verbose folk");

        System.err.println("  caught|uncaught|neither all|thread|none <TargetClass> <Exception>|null");

        throw new IllegalArgumentException("see usage");

    }

    public static void main(String[] args) throws Exception {

        StringBuffer testName = new StringBuffer("ExceptionEvents(");

        List flagList = new ArrayList();

        List argList = new ArrayList();

        for (int i = 0; i < args.length; ++i) {

            String arg = args[i];

            if (arg.startsWith("-")) {

                flagList.add(arg);

            } else {

                argList.add(arg);

            }

        }

        flags = (String[])flagList.toArray(new String[0]);

        args = (String[])argList.toArray(new String[0]);

        if (args.length == 0) {

            everything();

            testName.append("Full Test");

        } else if (args.length == 4) {

            switch (args[1].toLowerCase().charAt(0)) {

            case 'a':

                globalSuspendPolicy = EventRequest.SUSPEND_ALL;

                break;

            case 't':

                globalSuspendPolicy = EventRequest.SUSPEND_EVENT_THREAD;

                break;

            case 'n':

                globalSuspendPolicy = EventRequest.SUSPEND_NONE;

                break;

            default:

                usage();

            }

            String excString = args[3];

            if (excString.equals("null")) {

                excString = null;

            }

            switch (args[0].toLowerCase().charAt(0)) {

            case 'c':

                goCaught(args[2], excString);

                break;

            case 'u':

                goUncaught(args[2], excString);

                break;

            case 'n':

                goNeither(args[2], excString);

                break;

            default:

                usage();

            }

            testName.append(args[0]);

            testName.append(" ");

            testName.append(args[1]);

            testName.append(" ");

            testName.append(args[2]);

        } else {

            usage();

        }

        testName.append(")");

        summarize(testName.toString());

    }

    static void summarize(String testName) throws Exception {

        // final analyse

        if (tooManySummary.length() > 0) {

            System.out.println("\nSummary of tests with too many events:\n" +

                               tooManySummary.toString());

        }

        if (notSentSummary.length() > 0) {

            System.out.println("\nSummary of tests with expected events not sent:\n" +

                               notSentSummary.toString());

        }

        if (unexpectedSummary.length() > 0) {

            System.out.println("\nSummary of tests with events when none expected:\n" +

                               unexpectedSummary.toString());

        }

        if (failureCount > 0) {

            throw new Exception(testName + " FAILED " +

                                failureCount + " tests!");

        } else {

            System.out.println("\n" + testName + " test PASSED");

       }

    }

    /**

     * Target throws caught exception.

     * Events if caught enabled.

     */

    static void goCaught(String target,

                         String exceptionName) throws Exception {

        goSuspendPolicy(target, true, exceptionName,

                        true, true);

        goSuspendPolicy(target, true, exceptionName,

                        true, false);

        goSuspendPolicy(target, false, exceptionName,

                        false, true);

        goSuspendPolicy(target, false, exceptionName,

                        false, false);

    }

    /**

     * Target throws uncaught exception.

     * Events if uncaught enabled.

     */

    static void goUncaught(String target,

                           String exceptionName) throws Exception {

        goSuspendPolicy(target, true, exceptionName,

                        true, true);

        goSuspendPolicy(target, true, exceptionName,

                        false, true);

        goSuspendPolicy(target, false, exceptionName,

                        true, false);

        goSuspendPolicy(target, false, exceptionName,

                        false, false);

    }

    /**

     * Target doesn't throw named exception.  No events.

     */

    static void goNeither(String target,

                           String exceptionName) throws Exception {

        goSuspendPolicy(target, false, exceptionName,

                        true, true);

        goSuspendPolicy(target, false, exceptionName,

                        false, true);

        goSuspendPolicy(target, false, exceptionName,

                        true, false);

        goSuspendPolicy(target, false, exceptionName,

                        false, false);

    }

    /**

     * Suspend policy should make no difference.

     * Iterate over all of them.

     */

    static void goSuspendPolicy(String target,

                   boolean expectedEvent,

                   String exceptionName,

                   boolean caught, boolean uncaught) throws Exception {

        if (globalSuspendPolicy != -1) {

            go(target, expectedEvent, exceptionName,

               caught, uncaught, globalSuspendPolicy);

        } else {

            go(target, expectedEvent, exceptionName,

               caught, uncaught, EventRequest.SUSPEND_ALL);

            go(target, expectedEvent, exceptionName,

               caught, uncaught, EventRequest.SUSPEND_EVENT_THREAD);

            go(target, expectedEvent, exceptionName,

               caught, uncaught, EventRequest.SUSPEND_NONE);

        }

    }

    static void go(String target,

                   boolean expectedEvent,

                   String exceptionName,

                   boolean caught, boolean uncaught,

                   int suspendPolicy) throws Exception {

        String description = target + " with " +

                           exceptionName +

                           "/caught=" + caught +

                           "/uncaught=" + uncaught +

                           " suspend=";

        switch (suspendPolicy) {

        case EventRequest.SUSPEND_ALL:

            description += "All";

            break;

        case EventRequest.SUSPEND_EVENT_THREAD:

            description += "Thread";

            break;

        case EventRequest.SUSPEND_NONE:

            description += "None";

            break;

        default:

            throw new Exception("Test failure: bad suspend policy - " +

                                suspendPolicy);

        }

        description += "\n";

        System.out.print("\nTesting " + description);

        ExceptionEvents aRun = new ExceptionEvents(

                             target,

                             exceptionName, caught, uncaught,

                             suspendPolicy);

        aRun.startTests();

        aRun.analyse(expectedEvent, description);

    }

    void analyse(boolean expectedEvent, String description) {

        if (expectedEvent) {

            if (eventCount == 1) {

                println("pass: got expected event");

            } else if (eventCount > 1) {

                failure("FAILURE: expected only one event got: " +

                                   eventCount);

                tooManySummary.append(description);

                ++failureCount;

            } else {

                failure("FAILURE: expected event not sent");

                notSentSummary.append(description);

                ++failureCount;

            }

        } else {

            if (eventCount > 0) {

                failure("FAILURE: unexpected event sent");

                unexpectedSummary.append(description);

                ++failureCount;

            } else {

                println("pass: as expected no event sent");

            }

        }

    }

    /********** event handlers **********/

    public void exceptionThrown(ExceptionEvent event) {

        if (event.request() == request) {

            try {

                System.out.print("ExceptionEvent: ");

                System.out.print("" + event.exception().referenceType().name());

                Location loc = event.location();

                System.out.print(" @ " + loc.method().name());

                System.out.print(":" + loc.lineNumber());

            } catch (VMDisconnectedException exc) {

                System.out.print("Oops - " + exc.toString());

            }

            System.out.println();

            eventCount++;

        } else {

            System.out.print("alien exception: ");

            try {

                println(event.toString());

            } catch (VMDisconnectedException exc) {

                println("Oops - " + exc.toString());

            }

        }

    }

    /**

     * Turn off default Exception Handling

     */

    protected void createDefaultExceptionRequest() {

    }

    /********** test core **********/

    protected void runTests() throws Exception {

        /*

         * Get to the top of main()

         */

        startToMain(target);

        ReferenceType exceptionClass;

        if (exceptionName == null) {

            exceptionClass = null;

        } else {

            exceptionClass = findReferenceType(exceptionName);

            if (exceptionName == null) {

                throw new Exception("test failure - cannot find: " +

                                    exceptionName);

            }

        }

        request = eventRequestManager().createExceptionRequest(exceptionClass,

                                                               caught, uncaught);

        request.addClassExclusionFilter("java.*");

        request.addClassExclusionFilter("javax.*");

        request.addClassExclusionFilter("sun.*");

        request.addClassExclusionFilter("com.sun.*");

        request.addClassExclusionFilter("com.oracle.*");

        request.addClassExclusionFilter("oracle.*");

        request.addClassExclusionFilter("jdk.internal.*");

        request.setSuspendPolicy(suspendPolicy);

        request.enable();

        listenUntilVMDisconnect();

    }

}