RxJava hanging

RxJavaTest.java

import org.junit.Test;
import rx.schedulers.Schedulers;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by nithril on 06/04/14.
 */
public class RxJavaTest {


    @Test
    public void test1() throws InterruptedException {

        List<Integer> list = new ArrayList<>();
        for (int i = 0 ; i < 10_000_000 ; i++){
            list.add(i);
        }

        rx.Observable.from(list).observeOn(Schedulers.computation()).parallel(obs -> obs.map(
                val -> {
                    System.out.println(Thread.currentThread().getName() + " " + val);
                    return val;
                })).subscribe();

        while(true){

        }
    }


    @Test
    public void test2() throws InterruptedException {

        List<Integer> list = new ArrayList<>();
        for (int i = 0 ; i < 10_000_000 ; i++){
            list.add(i);
        }

        rx.Observable.from(list).parallel(obs -> obs.map(
                val -> {
                    System.out.println(Thread.currentThread().getName() + " " + val);
                    return val;
                })).subscribe();

        while(true){

        }
    }


    @Test
    public void test3() throws InterruptedException {

        List<Integer> list = new ArrayList<>();
        for (int i = 0 ; i < 10_000_000 ; i++){
            list.add(i);
        }

        rx.Observable.from(list).parallel(obs -> obs).subscribe(v -> System.out.println(v));

        while(true){

        }
    }
}