public void shouldCompleteFutureOnCancel() throws Throwable {
Waiter waiter = new Waiter();
FailsafeFuture<String> future =
Failsafe.with(new RetryPolicy())
.with(executor)
.onComplete(
(r, f) -> {
waiter.assertNull(r);
waiter.assertTrue(f instanceof CancellationException);
waiter.resume();
})
.get(
() -> {
Thread.sleep(5000);
return "test";
});
Testing.sleep(300);
future.cancel(true);
waiter.await(1000);
assertTrue(future.isCancelled());
assertTrue(future.isDone());
Asserts.assertThrows(() -> future.get(), CancellationException.class);
}
@Test(expectedExceptions = TimeoutException.class)
public void shouldGetWithTimeout() throws Throwable {
Failsafe.with(new RetryPolicy())
.with(executor)
.run(
() -> {
Thread.sleep(1000);
})
.get(100, TimeUnit.MILLISECONDS);
Thread.sleep(1000);
}
/**
* Asserts that completion handlers are not called again if a completed execution is cancelled.
*/
public void shouldNotCancelCompletedExecution() throws Throwable {
Waiter waiter = new Waiter();
FailsafeFuture<String> future =
Failsafe.with(new RetryPolicy())
.with(executor)
.onComplete(
(r, f) -> {
waiter.assertEquals("test", r);
waiter.assertNull(f);
waiter.resume();
Thread.sleep(100);
})
.get(() -> "test");
waiter.await(1000);
assertFalse(future.cancel(true));
assertFalse(future.isCancelled());
assertTrue(future.isDone());
assertEquals(future.get(), "test");
}