UnsupportedInfo.java

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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import javax.sound.midi.MidiDevice;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.spi.MidiDeviceProvider;

import static java.util.ServiceLoader.load;

/**
 * @test
 * @bug 8058115
 * @summary MidiDeviceProvider shouldn't returns incorrect results in case of
 *          unsupported MidiDevice.Info
 * @author Sergey Bylokhov
 */
public final class UnsupportedInfo {

    public static void main(final String[] args) {
        final MidiDevice.Info[] infos = MidiSystem.getMidiDeviceInfo();
        for (final MidiDeviceProvider mdp : load(MidiDeviceProvider.class)) {
            for (final MidiDevice.Info info : infos) {
                if (mdp.isDeviceSupported(info)) {
                    if (mdp.getDevice(info) == null) {
                        throw new RuntimeException("MidiDevice is null");
                    }
                } else {
                    try {
                        mdp.getDevice(info);
                        throw new RuntimeException(
                                "IllegalArgumentException expected");
                    } catch (final IllegalArgumentException ignored) {
                        // expected
                    }
                }
            }
        }
    }
}