Examples with Deferred org.osgi.util.promise.Deferred used on opensource projects

Example 11 with Deferred

use of org.osgi.util.promise.Deferred in project aries by apache.

the class ChainTest method testThenCallbackSuccess.

@Test
public void testThenCallbackSuccess() throws Exception {
    Deferred<String> def = new Deferred<String>();
    final AtomicBoolean run = new AtomicBoolean(false);
    Promise<String> chain = def.getPromise().then(new Callback() {

        @Override
        public void run() throws Exception {
            run.set(true);
        }
    });
    assertFalse("chain should not be resolved", chain.isDone());
    assertFalse("callback should not have been run", run.get());
    def.resolve("ok");
    assertTrue("chain resolved", chain.isDone());
    assertEquals("chain value matches", "ok", chain.getValue());
    assertTrue("callback should have been run", run.get());
}

Example 12 with Deferred

use of org.osgi.util.promise.Deferred in project aries by apache.

the class ChainTest method testThenCallbackThrowsExceptionSuccess.

@Test
public void testThenCallbackThrowsExceptionSuccess() throws Exception {
    Deferred<String> def = new Deferred<String>();
    final Exception failure = new Exception("bang!");
    Promise<String> chain = def.getPromise().then(new Callback() {

        @Override
        public void run() throws Exception {
            throw failure;
        }
    });
    assertFalse("chain should not be resolved", chain.isDone());
    def.resolve("ok");
    assertTrue("chain resolved", chain.isDone());
    assertSame("chain value matches", failure, chain.getFailure());
}

Example 13 with Deferred

use of org.osgi.util.promise.Deferred in project aries by apache.

the class ChainTest method testTimeoutSuccess.

@Test
public void testTimeoutSuccess() throws Exception {
    Deferred<String> def = new Deferred<String>();
    Promise<String> promise = def.getPromise();
    final CountDownLatch latch = new CountDownLatch(1);
    Promise<String> chain = promise.timeout(500).onResolve(new Runnable() {

        @Override
        public void run() {
            latch.countDown();
        }
    });
    assertFalse("promise should not be resolved", promise.isDone());
    assertFalse("chain should not be resolved", chain.isDone());
    def.resolve("ok");
    assertTrue("Did not eagerly complete!", latch.await(100, MILLISECONDS));
    assertTrue("promise should not be resolved", promise.isDone());
    assertTrue("chain should now be resolved", chain.isDone());
    assertEquals(promise.getValue(), chain.getValue());
}

Example 14 with Deferred

use of org.osgi.util.promise.Deferred in project aries by apache.

the class ChainTest method testTimeout.

@Test
public void testTimeout() throws Exception {
    Deferred<String> def = new Deferred<String>();
    Promise<String> promise = def.getPromise();
    long start = System.nanoTime();
    final CountDownLatch latch = new CountDownLatch(1);
    final AtomicLong finish = new AtomicLong();
    Promise<String> chain = promise.timeout(500).onResolve(new Runnable() {

        @Override
        public void run() {
            finish.set(System.nanoTime());
            latch.countDown();
        }
    });
    assertFalse("promise should not be resolved", promise.isDone());
    assertFalse("chain should not be resolved", chain.isDone());
    assertTrue("Did not time out!", latch.await(1, SECONDS));
    assertTrue("Finished too fast", NANOSECONDS.toMillis(finish.get() - start) > 450);
    assertFalse("promise should not be resolved", promise.isDone());
    assertTrue("chain should now be resolved", chain.isDone());
    assertTrue("Should fail with a timeout exception", chain.getFailure() instanceof TimeoutException);
}

Example 15 with Deferred

use of org.osgi.util.promise.Deferred in project aries by apache.

the class ChainTest method testThenCallbackFail.

@Test
public void testThenCallbackFail() throws Exception {
    Deferred<String> def = new Deferred<String>();
    final AtomicBoolean run = new AtomicBoolean(false);
    Promise<String> chain = def.getPromise().then(new Callback() {

        @Override
        public void run() throws Exception {
            run.set(true);
        }
    });
    Exception failure = new Exception("bang!");
    assertFalse("chain should not be resolved", chain.isDone());
    assertFalse("callback should not have been run", run.get());
    def.fail(failure);
    assertTrue("chain resolved", chain.isDone());
    assertSame("chain value matches", failure, chain.getFailure());
    assertTrue("callback should have been run", run.get());
}