@SuppressWarnings("unchecked")
static <T> void checkCompletedExceptionally(CompletableFuture<T> cf, boolean cancelled)
throws Exception {
try {
cf.join();
fail("Excepted exception to be thrown");
} catch (CompletionException x) {
if (cancelled) fail();
else pass();
} catch (CancellationException x) {
if (cancelled) pass();
else fail();
}
try {
cf.getNow(null);
fail("Excepted exception to be thrown");
} catch (CompletionException x) {
if (cancelled) fail();
else pass();
} catch (CancellationException x) {
if (cancelled) pass();
else fail();
}
try {
cf.get();
fail("Excepted exception to be thrown");
} catch (CancellationException x) {
if (cancelled) pass();
else fail();
} catch (ExecutionException x) {
if (cancelled) check(x.getCause() instanceof CancellationException);
else pass();
}
try {
cf.get(0L, SECONDS);
fail("Excepted exception to be thrown");
} catch (CancellationException x) {
if (cancelled) pass();
else fail();
} catch (ExecutionException x) {
if (cancelled) check(x.getCause() instanceof CancellationException);
else pass();
}
check(cf.isDone(), "Expected isDone to be true, got:" + cf);
check(
cf.isCancelled() == cancelled,
"Expected isCancelled: " + cancelled + ", got:" + cf.isCancelled());
check(
cf.cancel(true) == cancelled, "Expected cancel: " + cancelled + ", got:" + cf.cancel(true));
check(cf.toString().contains("[Completed exceptionally]")); // ## TODO: 'E'xceptionally
check(cf.complete((T) new Object()) == false, "Expected complete() to fail");
check(
cf.completeExceptionally(new Throwable()) == false,
"Expected completeExceptionally() to fail, already completed");
}
static void checkCompletedNormally(CompletableFuture<?> cf, Object[] values) {
try {
equalAnyOf(cf.join(), values);
} catch (Throwable x) {
unexpected(x);
}
try {
equalAnyOf(cf.getNow(null), values);
} catch (Throwable x) {
unexpected(x);
}
try {
equalAnyOf(cf.get(), values);
} catch (Throwable x) {
unexpected(x);
}
try {
equalAnyOf(cf.get(0L, SECONDS), values);
} catch (Throwable x) {
unexpected(x);
}
check(cf.isDone(), "Expected isDone to be true, got:" + cf);
check(!cf.isCancelled(), "Expected isCancelled to be false");
check(!cf.cancel(true), "Expected cancel to return false");
check(cf.toString().contains("[Completed normally]"));
check(cf.complete(null) == false, "Expected complete() to fail");
check(
cf.completeExceptionally(new Throwable()) == false,
"Expected completeExceptionally() to fail");
}