jdk/test/javax/sound/midi/Sequencer/SequencerState.java
changeset 41905 e8e5df013c6e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/sound/midi/Sequencer/SequencerState.java	Mon Oct 31 14:50:09 2016 +0300
@@ -0,0 +1,272 @@
+/*
+ * 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
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+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);
+    }
+}