Examples of org.usb4java.Context

org.usb4java.Context
Structure representing a libusb session. The concept of individual libusb sessions allows for your program to use two libraries (or dynamically load two modules) which both independently use libusb. This will prevent interference between the individual libusb users - for example {@link LibUsb#setDebug(Context,int)} will not affect the other user of thelibrary, and {@link LibUsb#exit(Context)} will not destroy resources that theother user is still using. Sessions are created by {@link LibUsb#init(Context)} and destroyed through{@link LibUsb#exit(Context)}. If your application is guaranteed to only ever include a single libusb user (i.e. you), you do not have to worry about contexts: pass NULL in every function call where a context is required. The default context will be used. @author Klaus Reimer (k@ailis.de)

     */
    @Test(expected = IllegalStateException.class)
    public void testSetPollfdNotifiersWithUninitializedContext()
    {
        assumeUsbTestsEnabled();
        final Context context = new Context();
        LibUsb.setPollfdNotifiersNative(context, context.getPointer());
    }

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     */
    @Test(expected = IllegalStateException.class)
    public void testUnsetPollfdNotifiersWithUninitializedContext()
    {
        assumeUsbTestsEnabled();
        final Context context = new Context();
        LibUsb.unsetPollfdNotifiersNative(context);
    }

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    @Test
    public void testPollFdNotifiers()
    {
        assumeUsbTestsEnabled();
        final PollfdListenerMock listener = new PollfdListenerMock();
        final Context context = new Context();
        LibUsb.init(context);
        LibUsb.setPollfdNotifiers(context, listener, "test");


        FileDescriptor fd = new FileDescriptor();
        LibUsb.triggerPollfdAdded(fd, 53, context.getPointer());
        assertEquals(53, listener.addedEvents);
        assertSame(fd, listener.addedFd);
        assertSame("test", listener.addedUserData);
        assertNull(listener.removedFd);
        assertNull(listener.removedUserData);


        listener.reset();


        fd = new FileDescriptor();
        LibUsb.triggerPollfdRemoved(fd, context.getPointer());
        assertEquals(0, listener.addedEvents);
        assertNull(listener.addedFd);
        assertNull(listener.addedUserData);
        assertSame(fd, listener.removedFd);
        assertSame("test", listener.removedUserData);


        LibUsb.setPollfdNotifiers(context, null, null);
        listener.reset();


        fd = new FileDescriptor();
        LibUsb.triggerPollfdAdded(fd, 53, context.getPointer());
        assertEquals(0, listener.addedEvents);
        assertNull(listener.addedFd);
        assertNull(listener.addedUserData);
        assertNull(listener.removedFd);
        assertNull(listener.removedUserData);


        listener.reset();


        fd = new FileDescriptor();
        LibUsb.triggerPollfdRemoved(fd, context.getPointer());
        assertEquals(0, listener.addedEvents);
        assertNull(listener.addedFd);
        assertNull(listener.addedUserData);
        assertNull(listener.removedFd);
        assertNull(listener.removedUserData);

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    @Before
    public void setUp()
    {
        if (isUsbTestsEnabled())
        {
            this.context = new Context();
            LibUsb.init(this.context);
            try
            {
                this.device = this.findTestDevice();
                if (this.device == null)

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     * Set up the test.
     */
    @Before
    public void setUp()
    {
        this.context = new Context();
        try
        {
            LibUsb.init(this.context);
        }
        catch (final Throwable e)

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     * Set up the test.
     */
    @Before
    public void setUp()
    {
        this.context = new Context();
        try
        {
            LibUsb.init(this.context);
        }
        catch (final Throwable e)

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Related Classes of org.usb4java.Context

org.usb4java.LibUsbDeviceTest

org.usb4java.LibUsbGlobalTest

org.usb4java.LibUsbTest

org.usb4java.TransferTest

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