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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/objects/microtask-queue-inl.h"
#include "test/unittests/test-utils.h"
namespace v8 {
namespace internal {
void NoopCallback(void*) {}
class MicrotaskQueueTest : public TestWithIsolate {
public:
Handle<Microtask> NewMicrotask() {
MicrotaskCallback callback = &NoopCallback;
void* data = nullptr;
return factory()->NewCallbackTask(
factory()->NewForeign(reinterpret_cast<Address>(callback)),
factory()->NewForeign(reinterpret_cast<Address>(data)));
}
};
TEST_F(MicrotaskQueueTest, EnqueueMicrotask) {
Handle<MicrotaskQueue> microtask_queue = factory()->NewMicrotaskQueue();
Handle<Microtask> microtask = NewMicrotask();
EXPECT_EQ(0, microtask_queue->pending_microtask_count());
MicrotaskQueue::EnqueueMicrotask(isolate(), microtask_queue, microtask);
EXPECT_EQ(1, microtask_queue->pending_microtask_count());
ASSERT_LE(1, microtask_queue->queue()->length());
EXPECT_EQ(*microtask, microtask_queue->queue()->get(0));
std::vector<Handle<Microtask>> microtasks;
microtasks.push_back(microtask);
// Queue microtasks until the reallocation happens.
int queue_capacity = microtask_queue->queue()->length();
for (int i = 0; i < queue_capacity; ++i) {
microtask = NewMicrotask();
MicrotaskQueue::EnqueueMicrotask(isolate(), microtask_queue, microtask);
microtasks.push_back(microtask);
}
int num_tasks = static_cast<int>(microtasks.size());
EXPECT_EQ(num_tasks, microtask_queue->pending_microtask_count());
ASSERT_LE(num_tasks, microtask_queue->queue()->length());
for (int i = 0; i < num_tasks; ++i) {
EXPECT_EQ(*microtasks[i], microtask_queue->queue()->get(i));
}
}
} // namespace internal
} // namespace v8
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