TEST(LoopTest, Async)
{
Queue<int> queue;
Promise<int> promise1;
Promise<string> promise2;
Future<string> future = loop(
[&]() {
return queue.get();
},
[&](int i) {
promise1.set(i);
return promise2.future()
.then([](const string& s) -> ControlFlow<string> {
return Break(s);
});
});
EXPECT_TRUE(future.isPending());
queue.put(1);
AWAIT_EQ(1, promise1.future());
EXPECT_TRUE(future.isPending());
string s = "Hello world!";
promise2.set(s);
AWAIT_EQ(s, future);
}
TEST(LoopTest, DiscardIterate)
{
Promise<int> promise;
promise.future().onDiscard([&]() { promise.discard(); });
Future<Nothing> future = loop(
[&]() {
return promise.future();
},
[&](int i) -> ControlFlow<Nothing> {
return Break();
});
EXPECT_TRUE(future.isPending());
future.discard();
AWAIT_DISCARDED(future);
EXPECT_TRUE(promise.future().hasDiscard());
}
TEST(LoopTest, Sync)
{
std::atomic_int value = ATOMIC_VAR_INIT(1);
Future<Nothing> future = loop(
[&]() {
return value.load();
},
[](int i) -> ControlFlow<Nothing> {
if (i != 0) {
return Continue();
}
return Break();
});
EXPECT_TRUE(future.isPending());
value.store(0);
AWAIT_READY(future);
}