setTimer() from worker thread

[ruslansennov]

I try to run this test several times.

@RunWith(VertxUnitRunner.class)
public class Khmmm extends VertxTestBase {

    @Test
    public void sometimesFails(TestContext tc) {
        Async async = tc.async(2);

        vertx.executeBlocking(fut -> {

            vertx.setTimer(10, l -> {
                System.out.println("timer1");
                async.countDown();
            });

            vertx.setTimer(10, l -> {
                System.out.println("timer2");
                async.countDown();
            });

            fut.complete();
        }, tc.asyncAssertSuccess());

        async.await(1000);
    }
}

Somethimes (but not every case) the very first (and only very first) execution fails:

Starting test: Khmmm#sometimesFails 
timer2

java.util.concurrent.TimeoutException: Timed out

    at io.vertx.ext.unit.impl.CompletionImpl.await(CompletionImpl.java:73)
    at ru.finam.vertx.sql.Khmmm.sometimesFails(Khmmm.java:29)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at io.vertx.ext.unit.junit.VertxUnitRunner.invokeTestMethod(VertxUnitRunner.java:95)
    at io.vertx.ext.unit.junit.VertxUnitRunner.lambda$invokeExplosively$0(VertxUnitRunner.java:114)
    at io.vertx.ext.unit.impl.TestContextImpl.run(TestContextImpl.java:90)
  ....

Starting test: Khmmm#sometimesFails 
timer1
timer2
Starting test: Khmmm#sometimesFails 
timer1
timer2

It havens when I do this in verticle context or in test context. It never happens if setTimer() executes from eventloop. Vertx version=3.7.1

What am I doing wrong?

[vietj]

can you reproduce this without vertx unit