TEST_F(ReadableStreamTest, BackpressureOnEnqueueing)
{
ScriptState::Scope scope(scriptState());
ExceptionState exceptionState(ExceptionState::ConstructionContext, "property", "interface", scriptState()->context()->Global(), isolate());
auto strategy = MockStrategy::create();
Checkpoint checkpoint;
StringStream* stream = construct(strategy);
EXPECT_EQ(ReadableStream::Readable, stream->stateInternal());
{
InSequence s;
EXPECT_CALL(checkpoint, Call(0));
EXPECT_CALL(*strategy, size(String("hello"), stream)).WillOnce(Return(1));
EXPECT_CALL(*strategy, shouldApplyBackpressure(1, stream)).WillOnce(Return(false));
EXPECT_CALL(checkpoint, Call(1));
EXPECT_CALL(checkpoint, Call(2));
EXPECT_CALL(*strategy, size(String("world"), stream)).WillOnce(Return(2));
EXPECT_CALL(*strategy, shouldApplyBackpressure(3, stream)).WillOnce(Return(true));
EXPECT_CALL(checkpoint, Call(3));
}
checkpoint.Call(0);
bool result = stream->enqueue("hello");
checkpoint.Call(1);
EXPECT_TRUE(result);
checkpoint.Call(2);
result = stream->enqueue("world");
checkpoint.Call(3);
EXPECT_FALSE(result);
stream->error(DOMException::create(AbortError, "done"));
}
TEST_F(ReadableStreamTest, CloseWhenReadable)
{
ScriptState::Scope scope(scriptState());
ExceptionState exceptionState(ExceptionState::ConstructionContext, "property", "interface", scriptState()->context()->Global(), isolate());
StringStream* stream = construct();
EXPECT_TRUE(stream->enqueue("hello"));
EXPECT_TRUE(stream->enqueue("bye"));
stream->close();
EXPECT_FALSE(stream->enqueue("should be ignored"));
EXPECT_EQ(ReadableStream::Readable, stream->stateInternal());
EXPECT_FALSE(stream->isPulling());
EXPECT_TRUE(stream->isDraining());
stream->read(scriptState());
isolate()->RunMicrotasks();
EXPECT_EQ(ReadableStream::Readable, stream->stateInternal());
EXPECT_FALSE(stream->isPulling());
EXPECT_TRUE(stream->isDraining());
stream->read(scriptState());
EXPECT_EQ(ReadableStream::Closed, stream->stateInternal());
EXPECT_FALSE(stream->isPulling());
EXPECT_TRUE(stream->isDraining());
}
TEST_F(ReadableStreamTest, ReadQueue)
{
ScriptState::Scope scope(scriptState());
ExceptionState exceptionState(ExceptionState::ConstructionContext, "property", "interface", scriptState()->context()->Global(), isolate());
StringStream* stream = construct();
Checkpoint checkpoint;
{
InSequence s;
EXPECT_CALL(checkpoint, Call(0));
EXPECT_CALL(*m_underlyingSource, pullSource()).Times(1);
EXPECT_CALL(checkpoint, Call(1));
}
Deque<std::pair<String, size_t>> queue;
EXPECT_TRUE(stream->enqueue("hello"));
EXPECT_TRUE(stream->enqueue("bye"));
EXPECT_EQ(ReadableStream::Readable, stream->stateInternal());
EXPECT_FALSE(stream->isPulling());
checkpoint.Call(0);
EXPECT_FALSE(stream->isDisturbed());
stream->readInternal(queue);
EXPECT_TRUE(stream->isDisturbed());
checkpoint.Call(1);
ASSERT_EQ(2u, queue.size());
EXPECT_EQ(std::make_pair(String("hello"), static_cast<size_t>(5)), queue[0]);
EXPECT_EQ(std::make_pair(String("bye"), static_cast<size_t>(3)), queue[1]);
EXPECT_EQ(ReadableStream::Readable, stream->stateInternal());
EXPECT_TRUE(stream->isPulling());
EXPECT_FALSE(stream->isDraining());
}
TEST_F(ReadableStreamTest, StrictStrategy)
{
ScriptState::Scope scope(scriptState());
ExceptionState exceptionState(ExceptionState::ConstructionContext, "property", "interface", scriptState()->context()->Global(), isolate());
Checkpoint checkpoint;
{
InSequence s;
EXPECT_CALL(checkpoint, Call(0));
EXPECT_CALL(checkpoint, Call(1));
EXPECT_CALL(*m_underlyingSource, pullSource());
EXPECT_CALL(checkpoint, Call(2));
EXPECT_CALL(checkpoint, Call(3));
EXPECT_CALL(*m_underlyingSource, pullSource());
EXPECT_CALL(checkpoint, Call(4));
EXPECT_CALL(checkpoint, Call(5));
EXPECT_CALL(checkpoint, Call(6));
EXPECT_CALL(checkpoint, Call(7));
EXPECT_CALL(checkpoint, Call(8));
EXPECT_CALL(checkpoint, Call(9));
EXPECT_CALL(*m_underlyingSource, pullSource());
}
StringStream* stream = new StringStream(m_underlyingSource, new StringStream::StrictStrategy);
ReadableStreamReader* reader = stream->getReader(scriptState()->executionContext(), exceptionState);
checkpoint.Call(0);
stream->didSourceStart();
checkpoint.Call(1);
EXPECT_FALSE(stream->isPulling());
reader->read(scriptState());
EXPECT_TRUE(stream->isPulling());
checkpoint.Call(2);
stream->enqueue("hello");
EXPECT_FALSE(stream->isPulling());
checkpoint.Call(3);
reader->read(scriptState());
EXPECT_TRUE(stream->isPulling());
checkpoint.Call(4);
reader->read(scriptState());
EXPECT_TRUE(stream->isPulling());
checkpoint.Call(5);
stream->enqueue("hello");
EXPECT_FALSE(stream->isPulling());
checkpoint.Call(6);
stream->enqueue("hello");
EXPECT_FALSE(stream->isPulling());
checkpoint.Call(7);
stream->enqueue("hello");
EXPECT_FALSE(stream->isPulling());
checkpoint.Call(8);
reader->read(scriptState());
EXPECT_FALSE(stream->isPulling());
checkpoint.Call(9);
reader->read(scriptState());
EXPECT_TRUE(stream->isPulling());
stream->error(DOMException::create(AbortError, "done"));
}
TEST_F(ReadableStreamTest, BackpressureOnReading)
{
ScriptState::Scope scope(scriptState());
ExceptionState exceptionState(ExceptionState::ConstructionContext, "property", "interface", scriptState()->context()->Global(), isolate());
auto strategy = MockStrategy::create();
Checkpoint checkpoint;
StringStream* stream = construct(strategy);
EXPECT_EQ(ReadableStream::Readable, stream->stateInternal());
{
InSequence s;
EXPECT_CALL(*strategy, size(String("hello"), stream)).WillOnce(Return(2));
EXPECT_CALL(*strategy, shouldApplyBackpressure(2, stream)).WillOnce(Return(false));
EXPECT_CALL(*strategy, size(String("world"), stream)).WillOnce(Return(3));
EXPECT_CALL(*strategy, shouldApplyBackpressure(5, stream)).WillOnce(Return(false));
EXPECT_CALL(checkpoint, Call(0));
EXPECT_CALL(*strategy, shouldApplyBackpressure(3, stream)).WillOnce(Return(false));
EXPECT_CALL(*m_underlyingSource, pullSource()).Times(1);
EXPECT_CALL(checkpoint, Call(1));
// shouldApplyBackpressure and pullSource are not called because the
// stream is pulling.
EXPECT_CALL(checkpoint, Call(2));
EXPECT_CALL(*strategy, size(String("foo"), stream)).WillOnce(Return(4));
EXPECT_CALL(*strategy, shouldApplyBackpressure(4, stream)).WillOnce(Return(true));
EXPECT_CALL(*strategy, size(String("bar"), stream)).WillOnce(Return(5));
EXPECT_CALL(*strategy, shouldApplyBackpressure(9, stream)).WillOnce(Return(true));
EXPECT_CALL(checkpoint, Call(3));
EXPECT_CALL(*strategy, shouldApplyBackpressure(5, stream)).WillOnce(Return(true));
EXPECT_CALL(checkpoint, Call(4));
}
stream->enqueue("hello");
stream->enqueue("world");
checkpoint.Call(0);
stream->read(scriptState());
checkpoint.Call(1);
stream->read(scriptState());
checkpoint.Call(2);
stream->enqueue("foo");
stream->enqueue("bar");
checkpoint.Call(3);
stream->read(scriptState());
checkpoint.Call(4);
stream->error(DOMException::create(AbortError, "done"));
}
TEST_F(ReadableStreamTest, CancelWhenReadable)
{
ScriptState::Scope scope(scriptState());
ExceptionState exceptionState(ExceptionState::ConstructionContext, "property", "interface", scriptState()->context()->Global(), isolate());
StringStream* stream = construct();
String onFulfilled, onRejected;
String onCancelFulfilled, onCancelRejected;
ScriptValue reason(scriptState(), v8String(scriptState()->isolate(), "reason"));
ScriptPromise promise = ScriptPromise::cast(scriptState(), v8String(scriptState()->isolate(), "hello"));
{
InSequence s;
EXPECT_CALL(*m_underlyingSource, cancelSource(scriptState(), reason)).WillOnce(ReturnPointee(&promise));
}
stream->enqueue("hello");
EXPECT_EQ(ReadableStream::Readable, stream->stateInternal());
EXPECT_FALSE(stream->isDisturbed());
ScriptPromise cancelResult = stream->cancel(scriptState(), reason);
EXPECT_TRUE(stream->isDisturbed());
cancelResult.then(createCaptor(&onCancelFulfilled), createCaptor(&onCancelRejected));
EXPECT_NE(promise, cancelResult);
EXPECT_EQ(ReadableStream::Closed, stream->stateInternal());
EXPECT_TRUE(onCancelFulfilled.isNull());
EXPECT_TRUE(onCancelRejected.isNull());
isolate()->RunMicrotasks();
EXPECT_EQ("undefined", onCancelFulfilled);
EXPECT_TRUE(onCancelRejected.isNull());
}
TEST_F(ReadableStreamTest, CloseAndEnqueue)
{
ScriptState::Scope scope(scriptState());
ExceptionState exceptionState(ExceptionState::ConstructionContext, "property", "interface", scriptState()->context()->Global(), isolate());
StringStream* stream = construct();
stream->close();
EXPECT_EQ(ReadableStream::Closed, stream->stateInternal());
bool result = stream->enqueue("hello");
EXPECT_FALSE(result);
EXPECT_EQ(ReadableStream::Closed, stream->stateInternal());
}