/*
* Copyright (c) 2003, 2016, 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
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*/
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.sound.midi.InvalidMidiDataException;
import javax.sound.midi.MidiDevice;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.Sequence;
import javax.sound.midi.Sequencer;
/**
* @test
* @bug 4913027
* @summary several Sequencer methods should specify behaviour on closed Sequencer
*/
public class SequencerState {
private static boolean hasSequencer() {
try {
Sequencer seq = MidiSystem.getSequencer();
if (seq != null) {
seq.open();
seq.close();
return true;
}
} catch (Exception e) {}
System.out.println("No sequencer available! Cannot execute test.");
return false;
}
public static void main(String[] args) throws Exception {
out("4913027: several Sequencer methods should should specify behaviour on closed Sequencer");
if (hasSequencer()) {
boolean passed = testAll();
if (passed) {
out("Test PASSED.");
} else {
throw new Exception("Test FAILED.");
}
}
}
/**
* Execute the test on all available Sequencers.
*
* @return true if the test passed for all Sequencers, false otherwise
*/
private static boolean testAll() throws Exception {
boolean result = true;
MidiDevice.Info[] devices = MidiSystem.getMidiDeviceInfo();
for (int i = 0; i < devices.length; i++) {
MidiDevice device = MidiSystem.getMidiDevice(devices[i]);
if (device instanceof Sequencer) {
result &= testSequencer((Sequencer) device);
}
}
return result;
}
/**
* Execute the test on the passed Sequencer.
*
* @return true if the test is passed this Sequencer, false otherwise
*/
private static boolean testSequencer(Sequencer seq) throws Exception {
boolean result = true;
out("testing: " + seq);
/* test calls in closed state.
*/
if (seq.isOpen()) {
out("Sequencer is already open, cannot test!");
return result;
}
try {
seq.start();
out("closed state: start() does not throw IllegalStateException!");
result = false;
} catch (IllegalStateException e) {
}
try {
seq.stop();
out("closed state: stop() does not throw IllegalStateException!");
result = false;
} catch (IllegalStateException e) {
}
try {
seq.startRecording();
out("closed state: startRecording() does not throw IllegalStateException!");
result = false;
} catch (IllegalStateException e) {
}
try {
seq.stopRecording();
out("closed state: stopRecording() does not throw IllegalStateException!");
result = false;
} catch (IllegalStateException e) {
}
Sequence sequence = createSequence();
if (sequence == null) {
out("created Sequence is null, cannot test!");
return result;
}
try {
seq.setSequence(sequence);
} catch (IllegalStateException e) {
out("closed state: setSequence(Sequence) throws IllegalStateException!");
result = false;
}
InputStream inputStream = createSequenceInputStream();
if (inputStream == null) {
out("created InputStream is null, cannot test!");
return result;
}
try {
seq.setSequence(inputStream);
} catch (IllegalStateException e) {
out("closed state: setSequence(InputStream) throws IllegalStateException!");
result = false;
}
try {
seq.getSequence();
} catch (IllegalStateException e) {
out("closed state: getSequence() throws IllegalStateException!");
result = false;
}
/* test calls in open state.
*/
seq.open();
if (! seq.isOpen()) {
out("Sequencer is not open, cannot test!");
return result;
}
try {
seq.start();
} catch (IllegalStateException e) {
out("open state: start() throws IllegalStateException!");
result = false;
}
try {
seq.stop();
} catch (IllegalStateException e) {
out("open state: stop() throws IllegalStateException!");
result = false;
}
try {
seq.startRecording();
} catch (IllegalStateException e) {
out("open state: startRecording() throws IllegalStateException!");
result = false;
}
try {
seq.stopRecording();
} catch (IllegalStateException e) {
out("open state: stopRecording() throws IllegalStateException!");
result = false;
}
sequence = createSequence();
if (sequence == null) {
out("created Sequence is null, cannot test!");
return result;
}
try {
seq.setSequence(sequence);
} catch (IllegalStateException e) {
out("open state: setSequence(Sequence) throws IllegalStateException!");
result = false;
}
inputStream = createSequenceInputStream();
if (inputStream == null) {
out("created InputStream is null, cannot test!");
return result;
}
try {
seq.setSequence(inputStream);
} catch (IllegalStateException e) {
out("open state: setSequence(InputStream) throws IllegalStateException!");
result = false;
}
try {
seq.getSequence();
} catch (IllegalStateException e) {
out("open state: getSequence() throws IllegalStateException!");
result = false;
}
seq.close();
return result;
}
/**
* Create a new Sequence for testing.
*
* @return a dummy Sequence, or null, if a problem occured while creating
* the Sequence
*/
private static Sequence createSequence() {
Sequence sequence = null;
try {
sequence = new Sequence(Sequence.PPQ, 480, 1);
} catch (InvalidMidiDataException e) {
// DO NOTHING
}
return sequence;
}
/**
* Create a new InputStream containing a Sequence for testing.
*
* @return an InputStream containing a dummy Sequence, or null, if a problem
* occured while creating the InputStream
*/
private static InputStream createSequenceInputStream() {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Sequence sequence = createSequence();
if (sequence == null) {
return null;
}
try {
MidiSystem.write(sequence, 0, baos);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
return bais;
} catch (IOException e) {
return null;
}
}
private static void out(String message) {
System.out.println(message);
}
}