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TransferTest.java
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/*
* Copyright (C) 2013 Klaus Reimer <[email protected]>
* See LICENSE.md for licensing information.
*/
package org.usb4java;
import static org.usb4java.test.UsbAssume.assumeUsbTestsEnabled;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
import java.lang.reflect.Field;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.usb4java.Context;
import org.usb4java.DeviceHandle;
import org.usb4java.LibUsb;
import org.usb4java.Transfer;
/**
* Tests the {@link Transfer} class.
*
* @author Klaus Reimer ([email protected])
*/
public class TransferTest
{
/** The libusb context. */
private Context context;
/**
* Set up the test.
*/
@Before
public void setUp()
{
this.context = new Context();
try
{
LibUsb.init(this.context);
}
catch (final Throwable e)
{
this.context = null;
}
}
/**
* Tear down the test.
*/
@After
public void tearDown()
{
if (this.context != null)
{
LibUsb.exit(this.context);
}
}
/**
* Tests allocating and freeing a transfer object.
*/
@Test
public void testAllocAndFree()
{
assumeUsbTestsEnabled();
final Transfer transfer = LibUsb.allocTransfer(0);
assertNotNull(transfer);
LibUsb.freeTransfer(transfer);
try
{
LibUsb.freeTransfer(transfer);
fail("Double-free should throw IllegalStateException");
}
catch (final IllegalStateException e)
{
// Expected behavior
}
}
/**
* Sets the device handle pointer via reflection.
*
* @param handle
* The device handle pointer.
* @param pointer
* The pointer to set.
*/
private void setPointer(final DeviceHandle handle, final long pointer)
{
try
{
final Field field = DeviceHandle.class
.getDeclaredField("deviceHandlePointer");
field.setAccessible(true);
field.set(handle, pointer);
}
catch (final Exception e)
{
throw new RuntimeException(e.toString(), e);
}
}
/**
* Tests the {@link Transfer#setDevHandle(DeviceHandle)} and
* {@link Transfer#devHandle()} methods.
*/
@Test
public void testDevHandle()
{
assumeUsbTestsEnabled();
final Transfer transfer = LibUsb.allocTransfer(0);
final DeviceHandle handle = new DeviceHandle();
this.setPointer(handle, 1);
final DeviceHandle handle2 = new DeviceHandle();
this.setPointer(handle2, 2);
assertNull(transfer.devHandle());
transfer.setDevHandle(handle);
assertNotNull(transfer.devHandle());
assertNotSame(handle, transfer.devHandle());
assertNotEquals(handle2, transfer.devHandle());
assertEquals(handle, transfer.devHandle());
transfer.setDevHandle(null);
assertNull(transfer.devHandle());
LibUsb.freeTransfer(transfer);
}
/**
* Tests the {@link Transfer#setFlags(byte)} and {@link Transfer#flags()}
* methods.
*/
@Test
public void testFlags()
{
assumeUsbTestsEnabled();
final Transfer transfer = LibUsb.allocTransfer(0);
assertEquals(0, transfer.flags());
transfer.setFlags((byte) 1);
assertEquals(1, transfer.flags());
transfer.setFlags((byte) 0);
assertEquals(0, transfer.flags());
LibUsb.freeTransfer(transfer);
}
/**
* Tests the {@link Transfer#setEndpoint(byte)} and
* {@link Transfer#endpoint()} methods.
*/
@Test
public void testEndpoint()
{
assumeUsbTestsEnabled();
final Transfer transfer = LibUsb.allocTransfer(0);
assertEquals(0, transfer.endpoint());
transfer.setEndpoint((byte) 1);
assertEquals(1, transfer.endpoint());
transfer.setEndpoint((byte) 0);
assertEquals(0, transfer.endpoint());
LibUsb.freeTransfer(transfer);
}
/**
* Tests the {@link Transfer#setType(byte)} and {@link Transfer#type()}
* methods.
*/
@Test
public void testType()
{
assumeUsbTestsEnabled();
final Transfer transfer = LibUsb.allocTransfer(0);
assertEquals(0, transfer.type());
transfer.setType((byte) 1);
assertEquals(1, transfer.type());
transfer.setType((byte) 0);
assertEquals(0, transfer.type());
LibUsb.freeTransfer(transfer);
}
/**
* Tests the {@link Transfer#setTimeout(long)} and
* {@link Transfer#timeout()} methods.
*/
@Test
public void testTimeout()
{
assumeUsbTestsEnabled();
final Transfer transfer = LibUsb.allocTransfer(0);
assertEquals(0, transfer.timeout());
transfer.setTimeout(1);
assertEquals(1, transfer.timeout());
transfer.setTimeout(0);
assertEquals(0, transfer.timeout());
LibUsb.freeTransfer(transfer);
}
/**
* Tests the {@link Transfer#status()} methods.
*/
@Test
public void testGetStatus()
{
assumeUsbTestsEnabled();
final Transfer transfer = LibUsb.allocTransfer(0);
assertEquals(0, transfer.status());
LibUsb.freeTransfer(transfer);
}
}