@Test
public void testFailedThrowsCorrectException() throws InterruptedException {
IOException e = new IOException();
CompletableFuture<Void> f = CompletableFutures.failed(e);
try {
f.get();
fail("expected exception");
} catch (ExecutionException ex) {
assertSame(e, ex.getCause());
}
}
@Test
public void testFutureGetThrowsUnwrappedException()
throws InterruptedException, ExecutionException {
IOException cause = new IOException();
Future<Void> f = CompletableFutures.failed(cause);
ThrowingSupplier<?, ?> s = CompletableFutures.get(f);
try {
s.get();
fail("expected exception");
} catch (Throwable ex) {
assertSame(cause, ex);
}
}