Examples with Vector javaslang.collection.Vector used on opensource projects

Example 1 with Vector

use of javaslang.collection.Vector in project javaslang by javaslang.

the class LazyTest method shouldBeConsistentFromMultipleThreads.

@Test
@SuppressWarnings({ "StatementWithEmptyBody", "rawtypes" })
public void shouldBeConsistentFromMultipleThreads() throws Exception {
    for (int i = 0; i < 100; i++) {
        final AtomicBoolean canProceed = new AtomicBoolean(false);
        final Vector<CompletableFuture<Void>> futures = Vector.range(0, 10).map(j -> {
            final AtomicBoolean isEvaluated = new AtomicBoolean(false);
            final Integer expected = ((j % 2) == 1) ? null : j;
            Lazy<Integer> lazy = Lazy.of(() -> {
                assertThat(isEvaluated.getAndSet(true)).isFalse();
                return expected;
            });
            return Tuple.of(lazy, expected);
        }).flatMap(t -> range(0, 5).map(j -> runAsync(() -> {
            while (!canProceed.get()) {
            }
            assertThat(t._1.get()).isEqualTo(t._2);
        })));
        final CompletableFuture all = CompletableFuture.allOf(futures.toJavaList().toArray(new CompletableFuture<?>[0]));
        canProceed.set(true);
        all.join();
    }
}