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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "VideoUtils.h"
#include "base/message_loop.h"
#include "gtest/gtest.h"
#include "mozilla/MozPromise.h"
#include "mozilla/SharedThreadPool.h"
#include "mozilla/TaskQueue.h"
#include "mozilla/Unused.h"
#include "nsISupportsImpl.h"
using namespace mozilla;
typedef MozPromise<int, double, false> TestPromise;
typedef MozPromise<int, double, true /* exclusive */> TestPromiseExcl;
typedef TestPromise::ResolveOrRejectValue RRValue;
class MOZ_STACK_CLASS AutoTaskQueue {
public:
AutoTaskQueue()
: mTaskQueue(
TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
"TestMozPromise AutoTaskQueue")) {}
~AutoTaskQueue() { mTaskQueue->AwaitShutdownAndIdle(); }
TaskQueue* Queue() { return mTaskQueue; }
private:
RefPtr<TaskQueue> mTaskQueue;
};
class DelayedResolveOrReject : public Runnable {
public:
DelayedResolveOrReject(TaskQueue* aTaskQueue, TestPromise::Private* aPromise,
const TestPromise::ResolveOrRejectValue& aValue,
int aIterations)
: mozilla::Runnable("DelayedResolveOrReject"),
mTaskQueue(aTaskQueue),
mPromise(aPromise),
mValue(aValue),
mIterations(aIterations) {}
NS_IMETHOD Run() override {
MOZ_RELEASE_ASSERT(mTaskQueue->IsCurrentThreadIn());
if (!mPromise) {
// Canceled.
return NS_OK;
}
if (--mIterations == 0) {
mPromise->ResolveOrReject(mValue, __func__);
return NS_OK;
}
nsCOMPtr<nsIRunnable> r = this;
return mTaskQueue->Dispatch(r.forget());
}
void Cancel() { mPromise = nullptr; }
protected:
~DelayedResolveOrReject() = default;
private:
RefPtr<TaskQueue> mTaskQueue;
RefPtr<TestPromise::Private> mPromise;
TestPromise::ResolveOrRejectValue mValue;
int mIterations;
};
template <typename FunctionType>
void RunOnTaskQueue(TaskQueue* aQueue, FunctionType aFun) {
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction("RunOnTaskQueue", aFun);
Unused << aQueue->Dispatch(r.forget());
}
// std::function can't come soon enough. :-(
#define DO_FAIL \
[]() { \
EXPECT_TRUE(false); \
return TestPromise::CreateAndReject(0, __func__); \
}
TEST(MozPromise, BasicResolve)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
TestPromise::CreateAndResolve(42, __func__)
->Then(
queue, __func__,
[queue](int aResolveValue) -> void {
EXPECT_EQ(aResolveValue, 42);
queue->BeginShutdown();
},
DO_FAIL);
});
}
TEST(MozPromise, BasicReject)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
TestPromise::CreateAndReject(42.0, __func__)
->Then(queue, __func__, DO_FAIL, [queue](int aRejectValue) -> void {
EXPECT_EQ(aRejectValue, 42.0);
queue->BeginShutdown();
});
});
}
TEST(MozPromise, BasicResolveOrRejectResolved)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
TestPromise::CreateAndResolve(42, __func__)
->Then(
queue, __func__,
[queue](const TestPromise::ResolveOrRejectValue& aValue) -> void {
EXPECT_TRUE(aValue.IsResolve());
EXPECT_FALSE(aValue.IsReject());
EXPECT_FALSE(aValue.IsNothing());
EXPECT_EQ(aValue.ResolveValue(), 42);
queue->BeginShutdown();
});
});
}
TEST(MozPromise, BasicResolveOrRejectRejected)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
TestPromise::CreateAndReject(42.0, __func__)
->Then(
queue, __func__,
[queue](const TestPromise::ResolveOrRejectValue& aValue) -> void {
EXPECT_TRUE(aValue.IsReject());
EXPECT_FALSE(aValue.IsResolve());
EXPECT_FALSE(aValue.IsNothing());
EXPECT_EQ(aValue.RejectValue(), 42.0);
queue->BeginShutdown();
});
});
}
TEST(MozPromise, AsyncResolve)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
RefPtr<TestPromise::Private> p = new TestPromise::Private(__func__);
// Kick off three racing tasks, and make sure we get the one that finishes
// earliest.
RefPtr<DelayedResolveOrReject> a =
new DelayedResolveOrReject(queue, p, RRValue::MakeResolve(32), 10);
RefPtr<DelayedResolveOrReject> b =
new DelayedResolveOrReject(queue, p, RRValue::MakeResolve(42), 5);
RefPtr<DelayedResolveOrReject> c =
new DelayedResolveOrReject(queue, p, RRValue::MakeReject(32.0), 7);
nsCOMPtr<nsIRunnable> ref = a.get();
Unused << queue->Dispatch(ref.forget());
ref = b.get();
Unused << queue->Dispatch(ref.forget());
ref = c.get();
Unused << queue->Dispatch(ref.forget());
p->Then(
queue, __func__,
[queue, a, b, c](int aResolveValue) -> void {
EXPECT_EQ(aResolveValue, 42);
a->Cancel();
b->Cancel();
c->Cancel();
queue->BeginShutdown();
},
DO_FAIL);
});
}
TEST(MozPromise, CompletionPromises)
{
bool invokedPass = false;
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue, &invokedPass]() -> void {
TestPromise::CreateAndResolve(40, __func__)
->Then(
queue, __func__,
[](int aVal) -> RefPtr<TestPromise> {
return TestPromise::CreateAndResolve(aVal + 10, __func__);
},
DO_FAIL)
->Then(
queue, __func__,
[&invokedPass](int aVal) {
invokedPass = true;
return TestPromise::CreateAndResolve(aVal, __func__);
},
DO_FAIL)
->Then(
queue, __func__,
[queue](int aVal) -> RefPtr<TestPromise> {
RefPtr<TestPromise::Private> p =
new TestPromise::Private(__func__);
nsCOMPtr<nsIRunnable> resolver = new DelayedResolveOrReject(
queue, p, RRValue::MakeResolve(aVal - 8), 10);
Unused << queue->Dispatch(resolver.forget());
return RefPtr<TestPromise>(p);
},
DO_FAIL)
->Then(
queue, __func__,
[](int aVal) -> RefPtr<TestPromise> {
return TestPromise::CreateAndReject(double(aVal - 42) + 42.0,
__func__);
},
DO_FAIL)
->Then(queue, __func__, DO_FAIL,
[queue, &invokedPass](double aVal) -> void {
EXPECT_EQ(aVal, 42.0);
EXPECT_TRUE(invokedPass);
queue->BeginShutdown();
});
});
}
TEST(MozPromise, PromiseAllResolve)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
nsTArray<RefPtr<TestPromise>> promises;
promises.AppendElement(TestPromise::CreateAndResolve(22, __func__));
promises.AppendElement(TestPromise::CreateAndResolve(32, __func__));
promises.AppendElement(TestPromise::CreateAndResolve(42, __func__));
TestPromise::All(queue, promises)
->Then(
queue, __func__,
[queue](const CopyableTArray<int>& aResolveValues) -> void {
EXPECT_EQ(aResolveValues.Length(), 3UL);
EXPECT_EQ(aResolveValues[0], 22);
EXPECT_EQ(aResolveValues[1], 32);
EXPECT_EQ(aResolveValues[2], 42);
queue->BeginShutdown();
},
[]() { EXPECT_TRUE(false); });
});
}
TEST(MozPromise, PromiseAllResolveAsync)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
nsTArray<RefPtr<TestPromise>> promises;
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndResolve(22, __func__);
}));
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndResolve(32, __func__);
}));
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndResolve(42, __func__);
}));
TestPromise::All(queue, promises)
->Then(
queue, __func__,
[queue](const CopyableTArray<int>& aResolveValues) -> void {
EXPECT_EQ(aResolveValues.Length(), 3UL);
EXPECT_EQ(aResolveValues[0], 22);
EXPECT_EQ(aResolveValues[1], 32);
EXPECT_EQ(aResolveValues[2], 42);
queue->BeginShutdown();
},
[]() { EXPECT_TRUE(false); });
});
}
TEST(MozPromise, PromiseAllReject)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
nsTArray<RefPtr<TestPromise>> promises;
promises.AppendElement(TestPromise::CreateAndResolve(22, __func__));
promises.AppendElement(TestPromise::CreateAndReject(32.0, __func__));
promises.AppendElement(TestPromise::CreateAndResolve(42, __func__));
// Ensure that more than one rejection doesn't cause a crash (bug #1207312)
promises.AppendElement(TestPromise::CreateAndReject(52.0, __func__));
TestPromise::All(queue, promises)
->Then(
queue, __func__, []() { EXPECT_TRUE(false); },
[queue](float aRejectValue) -> void {
EXPECT_EQ(aRejectValue, 32.0);
queue->BeginShutdown();
});
});
}
TEST(MozPromise, PromiseAllRejectAsync)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
nsTArray<RefPtr<TestPromise>> promises;
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndResolve(22, __func__);
}));
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndReject(32.0, __func__);
}));
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndResolve(42, __func__);
}));
// Ensure that more than one rejection doesn't cause a crash (bug #1207312)
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndReject(52.0, __func__);
}));
TestPromise::All(queue, promises)
->Then(
queue, __func__, []() { EXPECT_TRUE(false); },
[queue](float aRejectValue) -> void {
EXPECT_EQ(aRejectValue, 32.0);
queue->BeginShutdown();
});
});
}
TEST(MozPromise, PromiseAllSettled)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
nsTArray<RefPtr<TestPromise>> promises;
promises.AppendElement(TestPromise::CreateAndResolve(22, __func__));
promises.AppendElement(TestPromise::CreateAndReject(32.0, __func__));
promises.AppendElement(TestPromise::CreateAndResolve(42, __func__));
promises.AppendElement(TestPromise::CreateAndReject(52.0, __func__));
TestPromise::AllSettled(queue, promises)
->Then(
queue, __func__,
[queue](const TestPromise::AllSettledPromiseType::ResolveValueType&
aResolveValues) -> void {
EXPECT_EQ(aResolveValues.Length(), 4UL);
EXPECT_TRUE(aResolveValues[0].IsResolve());
EXPECT_EQ(aResolveValues[0].ResolveValue(), 22);
EXPECT_FALSE(aResolveValues[1].IsResolve());
EXPECT_EQ(aResolveValues[1].RejectValue(), 32.0);
EXPECT_TRUE(aResolveValues[2].IsResolve());
EXPECT_EQ(aResolveValues[2].ResolveValue(), 42);
EXPECT_FALSE(aResolveValues[3].IsResolve());
EXPECT_EQ(aResolveValues[3].RejectValue(), 52.0);
queue->BeginShutdown();
},
[]() { EXPECT_TRUE(false); });
});
}
TEST(MozPromise, PromiseAllSettledAsync)
{
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue]() -> void {
nsTArray<RefPtr<TestPromise>> promises;
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndResolve(22, __func__);
}));
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndReject(32.0, __func__);
}));
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndResolve(42, __func__);
}));
promises.AppendElement(InvokeAsync(queue, __func__, []() {
return TestPromise::CreateAndReject(52.0, __func__);
}));
TestPromise::AllSettled(queue, promises)
->Then(
queue, __func__,
[queue](const TestPromise::AllSettledPromiseType::ResolveValueType&
aResolveValues) -> void {
EXPECT_EQ(aResolveValues.Length(), 4UL);
EXPECT_TRUE(aResolveValues[0].IsResolve());
EXPECT_EQ(aResolveValues[0].ResolveValue(), 22);
EXPECT_FALSE(aResolveValues[1].IsResolve());
EXPECT_EQ(aResolveValues[1].RejectValue(), 32.0);
EXPECT_TRUE(aResolveValues[2].IsResolve());
EXPECT_EQ(aResolveValues[2].ResolveValue(), 42);
EXPECT_FALSE(aResolveValues[3].IsResolve());
EXPECT_EQ(aResolveValues[3].RejectValue(), 52.0);
queue->BeginShutdown();
},
[]() { EXPECT_TRUE(false); });
});
}
// Test we don't hit the assertions in MozPromise when exercising promise
// chaining upon task queue shutdown.
TEST(MozPromise, Chaining)
{
// We declare this variable before |atq| to ensure
// the destructor is run after |holder.Disconnect()|.
MozPromiseRequestHolder<TestPromise> holder;
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue, &holder]() {
auto p = TestPromise::CreateAndResolve(42, __func__);
const size_t kIterations = 100;
for (size_t i = 0; i < kIterations; ++i) {
p = p->Then(
queue, __func__,
[](int aVal) {
EXPECT_EQ(aVal, 42);
return TestPromise::CreateAndResolve(aVal, __func__);
},
[](double aVal) {
return TestPromise::CreateAndReject(aVal, __func__);
});
if (i == kIterations / 2) {
p->Then(
queue, __func__,
[queue, &holder]() {
holder.Disconnect();
queue->BeginShutdown();
},
DO_FAIL);
}
}
// We will hit the assertion if we don't disconnect the leaf Request
// in the promise chain.
p->Then(
queue, __func__, []() {}, []() {})
->Track(holder);
});
}
TEST(MozPromise, ResolveOrRejectValue)
{
using MyPromise = MozPromise<UniquePtr<int>, bool, false>;
using RRValue = MyPromise::ResolveOrRejectValue;
RRValue val;
EXPECT_TRUE(val.IsNothing());
EXPECT_FALSE(val.IsResolve());
EXPECT_FALSE(val.IsReject());
val.SetResolve(MakeUnique<int>(87));
EXPECT_FALSE(val.IsNothing());
EXPECT_TRUE(val.IsResolve());
EXPECT_FALSE(val.IsReject());
EXPECT_EQ(87, *val.ResolveValue());
// IsResolve() should remain true after std::move().
UniquePtr<int> i = std::move(val.ResolveValue());
EXPECT_EQ(87, *i);
EXPECT_TRUE(val.IsResolve());
EXPECT_EQ(val.ResolveValue().get(), nullptr);
}
TEST(MozPromise, MoveOnlyType)
{
using MyPromise = MozPromise<UniquePtr<int>, bool, true>;
using RRValue = MyPromise::ResolveOrRejectValue;
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
MyPromise::CreateAndResolve(MakeUnique<int>(87), __func__)
->Then(
queue, __func__, [](UniquePtr<int> aVal) { EXPECT_EQ(87, *aVal); },
[]() { EXPECT_TRUE(false); });
MyPromise::CreateAndResolve(MakeUnique<int>(87), __func__)
->Then(queue, __func__, [queue](RRValue&& aVal) {
EXPECT_FALSE(aVal.IsNothing());
EXPECT_TRUE(aVal.IsResolve());
EXPECT_FALSE(aVal.IsReject());
EXPECT_EQ(87, *aVal.ResolveValue());
// std::move() shouldn't change the resolve/reject state of aVal.
RRValue val = std::move(aVal);
EXPECT_TRUE(aVal.IsResolve());
EXPECT_EQ(nullptr, aVal.ResolveValue().get());
EXPECT_EQ(87, *val.ResolveValue());
queue->BeginShutdown();
});
}
TEST(MozPromise, HeterogeneousChaining)
{
using Promise1 = MozPromise<UniquePtr<char>, bool, true>;
using Promise2 = MozPromise<UniquePtr<int>, bool, true>;
using RRValue1 = Promise1::ResolveOrRejectValue;
using RRValue2 = Promise2::ResolveOrRejectValue;
MozPromiseRequestHolder<Promise2> holder;
AutoTaskQueue atq;
RefPtr<TaskQueue> queue = atq.Queue();
RunOnTaskQueue(queue, [queue, &holder]() {
Promise1::CreateAndResolve(MakeUnique<char>(0), __func__)
->Then(queue, __func__,
[&holder]() {
holder.Disconnect();
return Promise2::CreateAndResolve(MakeUnique<int>(0),
__func__);
})
->Then(queue, __func__,
[]() {
// Shouldn't be called for we've disconnected the request.
EXPECT_FALSE(true);
})
->Track(holder);
});
Promise1::CreateAndResolve(MakeUnique<char>(87), __func__)
->Then(
queue, __func__,
[](UniquePtr<char> aVal) {
EXPECT_EQ(87, *aVal);
return Promise2::CreateAndResolve(MakeUnique<int>(94), __func__);
},
[]() {
return Promise2::CreateAndResolve(MakeUnique<int>(95), __func__);
})
->Then(
queue, __func__, [](UniquePtr<int> aVal) { EXPECT_EQ(94, *aVal); },
[]() { EXPECT_FALSE(true); });
Promise1::CreateAndResolve(MakeUnique<char>(87), __func__)
->Then(queue, __func__,
[](RRValue1&& aVal) {
EXPECT_EQ(87, *aVal.ResolveValue());
return Promise2::CreateAndResolve(MakeUnique<int>(94), __func__);
})
->Then(queue, __func__, [queue](RRValue2&& aVal) {
EXPECT_EQ(94, *aVal.ResolveValue());
queue->BeginShutdown();
});
}
TEST(MozPromise, XPCOMEventTarget)
{
TestPromise::CreateAndResolve(42, __func__)
->Then(
GetCurrentSerialEventTarget(), __func__,
[](int aResolveValue) -> void { EXPECT_EQ(aResolveValue, 42); },
DO_FAIL);
// Spin the event loop.
NS_ProcessPendingEvents(nullptr);
}
TEST(MozPromise, MessageLoopEventTarget)
{
TestPromise::CreateAndResolve(42, __func__)
->Then(
MessageLoop::current()->SerialEventTarget(), __func__,
[](int aResolveValue) -> void { EXPECT_EQ(aResolveValue, 42); },
DO_FAIL);
// Spin the event loop.
NS_ProcessPendingEvents(nullptr);
}
TEST(MozPromise, ChainTo)
{
RefPtr<TestPromise> promise1 = TestPromise::CreateAndResolve(42, __func__);
RefPtr<TestPromise::Private> promise2 = new TestPromise::Private(__func__);
promise2->Then(
GetCurrentSerialEventTarget(), __func__,
[&](int aResolveValue) -> void { EXPECT_EQ(aResolveValue, 42); },
DO_FAIL);
promise1->ChainTo(promise2.forget(), __func__);
// Spin the event loop.
NS_ProcessPendingEvents(nullptr);
}
TEST(MozPromise, SynchronousTaskDispatch1)
{
bool value = false;
RefPtr<TestPromiseExcl::Private> promise =
new TestPromiseExcl::Private(__func__);
promise->UseSynchronousTaskDispatch(__func__);
promise->Resolve(42, __func__);
EXPECT_EQ(value, false);
promise->Then(
GetCurrentSerialEventTarget(), __func__,
[&](int aResolveValue) -> void {
EXPECT_EQ(aResolveValue, 42);
value = true;
},
DO_FAIL);
EXPECT_EQ(value, true);
}
TEST(MozPromise, SynchronousTaskDispatch2)
{
bool value = false;
RefPtr<TestPromiseExcl::Private> promise =
new TestPromiseExcl::Private(__func__);
promise->UseSynchronousTaskDispatch(__func__);
promise->Then(
GetCurrentSerialEventTarget(), __func__,
[&](int aResolveValue) -> void {
EXPECT_EQ(aResolveValue, 42);
value = true;
},
DO_FAIL);
EXPECT_EQ(value, false);
promise->Resolve(42, __func__);
EXPECT_EQ(value, true);
}
TEST(MozPromise, DirectTaskDispatch)
{
bool value1 = false;
bool value2 = false;
// For direct task dispatch to be working, we must be within a
// nested event loop. So the test itself must be dispatched within
// a task.
GetCurrentSerialEventTarget()->Dispatch(NS_NewRunnableFunction("test", [&]() {
GetCurrentSerialEventTarget()->Dispatch(
NS_NewRunnableFunction("test", [&]() {
EXPECT_EQ(value1, true);
value2 = true;
}));
RefPtr<TestPromise::Private> promise = new TestPromise::Private(__func__);
promise->UseDirectTaskDispatch(__func__);
promise->Resolve(42, __func__);
EXPECT_EQ(value1, false);
promise->Then(
GetCurrentSerialEventTarget(), __func__,
[&](int aResolveValue) -> void {
EXPECT_EQ(aResolveValue, 42);
EXPECT_EQ(value2, false);
value1 = true;
},
DO_FAIL);
EXPECT_EQ(value1, false);
}));
// Spin the event loop.
NS_ProcessPendingEvents(nullptr);
}
TEST(MozPromise, ChainedDirectTaskDispatch)
{
bool value1 = false;
bool value2 = false;
// For direct task dispatch to be working, we must be within a
// nested event loop. So the test itself must be dispatched within
// a task.
GetCurrentSerialEventTarget()->Dispatch(NS_NewRunnableFunction("test", [&]() {
GetCurrentSerialEventTarget()->Dispatch(
NS_NewRunnableFunction("test", [&]() {
EXPECT_EQ(value1, true);
value2 = true;
}));
RefPtr<TestPromise::Private> promise1 = new TestPromise::Private(__func__);
promise1->UseDirectTaskDispatch(__func__);
promise1->Resolve(42, __func__);
EXPECT_EQ(value1, false);
promise1
->Then(
GetCurrentSerialEventTarget(), __func__,
[&](int aResolveValue) -> RefPtr<TestPromise> {
EXPECT_EQ(aResolveValue, 42);
EXPECT_EQ(value2, false);
RefPtr<TestPromise::Private> promise2 =
new TestPromise::Private(__func__);
promise2->UseDirectTaskDispatch(__func__);
promise2->Resolve(43, __func__);
return promise2;
},
DO_FAIL)
->Then(
GetCurrentSerialEventTarget(), __func__,
[&](int aResolveValue) -> void {
EXPECT_EQ(aResolveValue, 43);
EXPECT_EQ(value2, false);
value1 = true;
},
DO_FAIL);
EXPECT_EQ(value1, false);
}));
// Spin the event loop.
NS_ProcessPendingEvents(nullptr);
}
TEST(MozPromise, ChainToDirectTaskDispatch)
{
bool value1 = false;
bool value2 = false;
// For direct task dispatch to be working, we must be within a
// nested event loop. So the test itself must be dispatched within
// a task.
GetCurrentSerialEventTarget()->Dispatch(NS_NewRunnableFunction("test", [&]() {
GetCurrentSerialEventTarget()->Dispatch(
NS_NewRunnableFunction("test", [&]() {
EXPECT_EQ(value1, true);
value2 = true;
}));
RefPtr<TestPromise::Private> promise1 = new TestPromise::Private(__func__);
promise1->UseDirectTaskDispatch(__func__);
RefPtr<TestPromise::Private> promise2 = new TestPromise::Private(__func__);
promise2->Then(
GetCurrentSerialEventTarget(), __func__,
[&](int aResolveValue) -> void {
EXPECT_EQ(aResolveValue, 42);
EXPECT_EQ(value2, false);
value1 = true;
},
DO_FAIL);
promise1->ChainTo(promise2.forget(), __func__);
EXPECT_EQ(value1, false);
promise1->Resolve(42, __func__);
}));
// Spin the event loop.
NS_ProcessPendingEvents(nullptr);
}
TEST(MozPromise, Map)
{
int value = 0;
bool ran_err = false;
InvokeAsync(GetCurrentSerialEventTarget(), "test",
[&]() { return TestPromise::CreateAndResolve(18, "test"); })
->Map(GetCurrentSerialEventTarget(), "test",
[](int val) { return val + 0x18; })
->MapErr(GetCurrentSerialEventTarget(), "test",
[&](double val) {
ran_err = true;
return Ok{};
})
->Map(GetCurrentSerialEventTarget(), "test", [&](int val) {
value = val;
return Ok{};
});
NS_ProcessPendingEvents(nullptr);
EXPECT_EQ(value, 42);
EXPECT_EQ(ran_err, false);
}
TEST(MozPromise, MapErr)
{
bool ran_ok = false;
double result = 0.0;
InvokeAsync(GetCurrentSerialEventTarget(), "test",
[&]() { return TestPromise::CreateAndReject(1.0, "test"); })
->Map(GetCurrentSerialEventTarget(), "test",
[&](int val) {
ran_ok = true;
return 1;
})
->MapErr(GetCurrentSerialEventTarget(), "test",
[](double val) { return val * 2; })
->MapErr(GetCurrentSerialEventTarget(), "test", [&](double val) {
result = val;
return Ok{};
});
NS_ProcessPendingEvents(nullptr);
EXPECT_EQ(result, 2.0);
EXPECT_EQ(ran_ok, false);
}
#undef DO_FAIL