jdk-24/test/jdk/javax/sound/sampled/LineEvent/LineInfoNPE.java

/*
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 * 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
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 * questions.
 */

import javax.sound.sampled.Control;
import javax.sound.sampled.Line;
import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineListener;

/**
 * @test
 * @bug 4672865
 * @summary LineEvent.toString() throws unexpected NullPointerException
 */
public class LineInfoNPE {

    static final int STATUS_PASSED = 0;
    static final int STATUS_FAILED = 2;
    static final int STATUS_TEMP = 95;

    public static void main(String argv[]) throws Exception {
        int testExitStatus = run(argv, System.out);
        if (testExitStatus != STATUS_PASSED) {
            throw new Exception("test FAILED!");
        }
    }

    public static int run(String argv[], java.io.PrintStream out) {
        int testResult = STATUS_PASSED;

        out.println("\n==> Test for LineEvent class:");

        Line testLine = new TestLine();
        Line nullLine = null;

        LineEvent.Type testLineEventType = LineEvent.Type.OPEN;
        LineEvent.Type nullLineEventType = null;

        LineEvent testedLineEvent = null;
        out.println("\n>> LineEvent constructor for Line = null: ");
        try {
            testedLineEvent =
                new LineEvent(nullLine,  // the source Line of this event
                                testLineEventType, // LineEvent.Type - the event type
                                (long) 1000 // position - the number processed of sample frames
                                );
            out.println(">  No any Exception was thrown!");
            out.println(">  testedLineEvent.getType():");
            try {
                Line producedLine = testedLineEvent.getLine();
                out.println(">   PASSED: producedLine = " + producedLine);
            } catch (Throwable thrown) {
                out.println("##  FAILED: unexpected Exception was thrown:");
                thrown.printStackTrace(out);
                testResult = STATUS_FAILED;
            }
            out.println(">  testedLineEvent.toString():");
            try {
                String producedString = testedLineEvent.toString();
                out.println(">   PASSED: producedString = " + producedString);
            } catch (Throwable thrown) {
                out.println("##  FAILED: unexpected Exception was thrown:");
                thrown.printStackTrace(out);
                testResult = STATUS_FAILED;
            }
        } catch (IllegalArgumentException illegArgExcept) {
            out.println(">   PASSED: expected IllegalArgumentException was thrown:");
            illegArgExcept.printStackTrace(out);
        } catch (NullPointerException nullPE) {
            out.println(">   PASSED: expected NullPointerException was thrown:");
            nullPE.printStackTrace(out);
        } catch (Throwable thrown) {
            out.println("##  FAILED: unexpected Exception was thrown:");
            thrown.printStackTrace(out);
            testResult = STATUS_FAILED;
        }

        out.println("\n>> LineEvent constructor for LineEvent.Type = null: ");
        try {
            testedLineEvent =
                new LineEvent(testLine,  // the source Line of this event
                                nullLineEventType, // LineEvent.Type - the event type
                                (long) 1000 // position - the number processed of sample frames
                                );
            out.println(">  No any Exception was thrown!");
            out.println(">  testedLineEvent.getType():");
            try {
                LineEvent.Type producedType = testedLineEvent.getType();
                out.println(">   PASSED: producedType = " + producedType);
            } catch (Throwable thrown) {
                out.println("##  FAILED: unexpected Exception was thrown:");
                thrown.printStackTrace(out);
                testResult = STATUS_FAILED;
            }
            out.println(">  testedLineEvent.toString():");
            try {
                String producedString = testedLineEvent.toString();
                out.println(">   PASSED: producedString = " + producedString);
            } catch (Throwable thrown) {
                out.println("##  FAILED: unexpected Exception was thrown:");
                thrown.printStackTrace(out);
                testResult = STATUS_FAILED;
            }
        } catch (IllegalArgumentException illegArgExcept) {
            out.println(">   PASSED: expected IllegalArgumentException was thrown:");
            illegArgExcept.printStackTrace(out);
        } catch (NullPointerException nullPE) {
            out.println(">   PASSED: expected NullPointerException was thrown:");
            nullPE.printStackTrace(out);
        } catch (Throwable thrown) {
            out.println("##  FAILED: unexpected Exception was thrown:");
            thrown.printStackTrace(out);
            testResult = STATUS_FAILED;
        }

        if ( testResult == STATUS_FAILED ) {
            out.println("\n==> test FAILED!");
        } else {
            out.println("\n==> test PASSED!");
        }
        return testResult;
    }
}    // end of test class

class TestLine implements Line {

    public void addLineListener(LineListener listener) {
    }

    public void close() {
    }

    public Control getControl(Control.Type control) {
        return null;
    }

    public Control[] getControls() {
        return new Control[0];
    }

    public Line.Info getLineInfo() {
        return null;
    }

    public boolean isOpen() {
        return false;
    }

    public boolean isControlSupported(Control.Type control) {
        return false;
    }

    public void open() {
    }

    public void removeLineListener(LineListener listener) {
    }
}