Future.fromCompletableFuture should not block.

[danieldietrich]

Instead the wrapping Vavr Future needs to be completed using

• Promise (for v0.9.2)
• Future.join (for v1.0.0)

[danieldietrich]

This test already works as expected with Vavr 0.9.2:

public class Xyz {

    public static void main(String[] args) throws Exception {

        final CompletableFuture<Integer> javaFuture = CompletableFuture.supplyAsync(() -> {
            try {
                Thread.sleep(3000);
                return 1;
            } catch (InterruptedException e) {
                return 0;
            }
        });

        final Future<String> vavrFuture = Future.fromCompletableFuture(javaFuture).map(String::valueOf);

        System.out.println(vavrFuture);

        vavrFuture.forEach(System.out::println);

        Thread.sleep(5000);

        System.exit(0);

    }
}

Console output:

Future(?)
1