JarCastingserial-executor-service
Test utility implementation of ScheduledExecutorService
Allows for testing of code such as the following:
class Foo
{
private int count = 0;
public Foo(ScheduledExecutorService service, Bar bar)
{
service.scheduleAtFixedRate(new Runnable()
{
@Override
public void run()
{
count++;
bar.doWhatever();
}
}, 5, 10, TimeUnit.SECONDS);
}
public int getCount()
{
return count;
}
}
Without the capabilities of this utility, testing the above would require doing something like the following:
@Test
public void testFoo()
{
Bar bar = new Bar();
Foo foo = new Foo(Executors.newSingleThreadExecutor(), bar);
Thread.sleep(5*1000);
assertEquals(foo.getCount(), 1);
assertTrue(bar.whateverGotDone());
}
Using this test class, the sleep is no longer required:
@Test
public void testFoo()
{
SerialScheduledExecutorService executor = new SerialScheduledExecutorService();
Bar bar = new Bar();
Foo foo = new Foo(executor, bar);
executor.elapseTime(5, TimeUnit.SECONDS);
assertEquals(foo.getCount(), 1);
assertTrue(bar.whateverGotDone());
}
For more examples, see the unit tests provided.