void when_using_rescue()
{
Promise<string> promise = null;
string eventResult = null;
before = () => eventResult = null;
after = () => promise.Await();
it["rescues failed promise"] = () => {
promise = TestHelper.PromiseWithError<string>("error 42", delay).Rescue(error => "rescue");
promise.OnFulfilled += result => eventResult = result;
promise.Await();
promise.state.should_be(PromiseState.Fulfilled);
promise.progress.should_be(1f);
promise.result.should_be("rescue");
promise.error.should_be_null();
eventResult.should_be("rescue");
};
it["fulfills when no error"] = () => {
promise = TestHelper.PromiseWithResult("42", delay).Rescue(error => "rescue");
promise.OnFulfilled += result => eventResult = result;
promise.Await();
Thread.SpinWait(0);
promise.state.should_be(PromiseState.Fulfilled);
promise.progress.should_be(1f);
promise.result.should_be("42");
promise.error.should_be_null();
eventResult.should_be("42");
};
context["progress"] = () => {
Deferred<string> deferred = null;
var progressCalled = 0;
var eventProgress = 0f;
before = () => {
eventProgress = 0f;
progressCalled = 0;
deferred = new Deferred<string>();
deferred.Progress(0.1f);
promise = deferred.Rescue(error => "43");
promise.OnProgressed += progress => {
eventProgress = progress;
progressCalled++;
};
};
it["forwards progress"] = () => {
deferred.Progress(0.3f);
deferred.Progress(0.6f);
deferred.Fulfill("42");
eventProgress.should_be(1f);
promise.progress.should_be(1f);
progressCalled.should_be(3);
};
it["has initial progress"] = () => {
promise.progress.should_be(0.1f);
deferred.Fulfill("42");
};
};
it["calculates correct progress when concatenating with then"] = () => {
Func<string, string> p = result => {
Thread.Sleep(delay);
return "42";
};
Func<Exception, string> r = error => {
Thread.Sleep(delay);
return "error";
};
promise = TestHelper.PromiseWithResult("42", delay)
.Then(p)
.Then(p)
.Then(p).Rescue(r);
int eventCalled = 0;
var expectedProgresses = new [] { 0.25f, 0.5f, 0.75f, 1f };
promise.OnProgressed += progress => {
progress.should_be(expectedProgresses[eventCalled]);
eventCalled++;
};
promise.Await();
eventCalled.should_be(expectedProgresses.Length);
};
}
