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/*
* Copyright (c) 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.
*/
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.spi.MixerProvider;
import static java.util.ServiceLoader.load;
/**
* @test
* @bug 8135100
* @author Sergey Bylokhov
*/
public final class ExpectedNPEOnNull {
public static void main(final String[] args) throws Exception {
testAS();
for (final MixerProvider mp : load(MixerProvider.class)) {
testMP(mp);
}
testMP(customMP);
}
/**
* Tests the part of AudioSystem API, which implemented via MixerProvider.
*/
private static void testAS() {
try {
AudioSystem.getMixer(null); // null should be accepted
} catch (final SecurityException | IllegalArgumentException ignored) {
// skip the specified exceptions only
}
}
/**
* Tests the MixerProvider API directly.
*/
private static void testMP(MixerProvider mp) {
try {
mp.isMixerSupported(null);
throw new RuntimeException("NPE is expected: " + mp);
} catch (final NullPointerException ignored) {
}
try {
mp.getMixer(null); // null should be accepted
} catch (SecurityException | IllegalArgumentException e) {
// skip the specified exceptions only
}
}
/**
* Tests some default implementation of MixerProvider API, using the
* custom {@code MixerProvider}, which support nothing.
*/
static final MixerProvider customMP = new MixerProvider() {
@Override
public Mixer.Info[] getMixerInfo() {
return new Mixer.Info[0];
}
@Override
public Mixer getMixer(Mixer.Info info) {
return null;
}
};
}
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