95 lines
3.0 KiB
Java
95 lines
3.0 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.util.Objects;
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import javax.sound.midi.MidiDevice;
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import javax.sound.midi.MidiSystem;
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import javax.sound.midi.spi.MidiDeviceProvider;
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import static java.util.ServiceLoader.load;
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/**
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* @test
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* @bug 8143909
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* @author Sergey Bylokhov
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*/
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public final class ExpectedNPEOnNull {
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public static void main(final String[] args) throws Exception {
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testMS();
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for (final MidiDeviceProvider mdp : load(MidiDeviceProvider.class)) {
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testMDP(mdp);
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}
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testMDP(customMDP);
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}
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/**
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* Tests the part of MidiSystem API, which implemented via
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* MidiDeviceProvider.
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*/
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private static void testMS() throws Exception {
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// MidiSystem#getMidiDevice(MidiDevice.Info)
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try {
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MidiSystem.getMidiDevice(null);
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throw new RuntimeException("NPE is expected");
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} catch (final NullPointerException ignored) {
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}
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}
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/**
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* Tests the MidiDeviceProvider API directly.
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*/
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private static void testMDP(final MidiDeviceProvider mdp) throws Exception {
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// MidiDeviceProvider#isDeviceSupported(Info)
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try {
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mdp.isDeviceSupported(null);
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throw new RuntimeException("NPE is expected");
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} catch (final NullPointerException ignored) {
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}
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// MidiDeviceProvider#getDevice(Info)
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try {
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mdp.getDevice(null);
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throw new RuntimeException("NPE is expected");
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} catch (final NullPointerException ignored) {
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}
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}
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/**
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* Tests some default implementation of MidiDeviceProvider API, using the
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* custom {@code MidiDeviceProvider}, which support nothing.
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*/
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static MidiDeviceProvider customMDP = new MidiDeviceProvider() {
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@Override
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public MidiDevice.Info[] getDeviceInfo() {
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return new MidiDevice.Info[0];
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}
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@Override
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public MidiDevice getDevice(MidiDevice.Info info) {
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Objects.requireNonNull(info);
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return null;
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}
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};
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}
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