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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this sink code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/streams/writable_stream.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_testing.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_extras_test_utils.h"
#include "third_party/blink/renderer/core/messaging/message_channel.h"
#include "third_party/blink/renderer/core/streams/writable_stream_default_writer.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
#include "v8/include/v8.h"
namespace blink {
namespace {
TEST(WritableStreamTest, CreateWithoutArguments) {
V8TestingScope scope;
WritableStream* stream =
WritableStream::Create(scope.GetScriptState(), scope.GetExceptionState());
ASSERT_TRUE(stream);
ASSERT_FALSE(scope.GetExceptionState().HadException());
}
// Testing getWriter, locked and IsLocked.
TEST(WritableStreamTest, GetWriter) {
V8TestingScope scope;
ScriptState* script_state = scope.GetScriptState();
WritableStream* stream =
WritableStream::Create(script_state, ASSERT_NO_EXCEPTION);
ASSERT_TRUE(stream);
EXPECT_FALSE(stream->locked());
stream->getWriter(script_state, ASSERT_NO_EXCEPTION);
EXPECT_TRUE(stream->locked());
}
TEST(WritableStreamTest, Serialize) {
V8TestingScope scope;
auto* script_state = scope.GetScriptState();
const char underlying_sink_script[] =
R"JS(
const underlying_sink = {
write(chunk) {
result = chunk;
}
};
underlying_sink)JS";
ScriptValue underlying_sink =
EvalWithPrintingError(&scope, underlying_sink_script);
ASSERT_FALSE(underlying_sink.IsEmpty());
auto* stream = WritableStream::Create(script_state, underlying_sink,
ASSERT_NO_EXCEPTION);
ASSERT_TRUE(stream);
auto* channel =
MakeGarbageCollected<MessageChannel>(scope.GetExecutionContext());
stream->Serialize(script_state, channel->port1(), ASSERT_NO_EXCEPTION);
EXPECT_TRUE(stream->locked());
auto* transferred = WritableStream::Deserialize(
script_state, channel->port2(), ASSERT_NO_EXCEPTION);
ASSERT_TRUE(transferred);
WritableStreamDefaultWriter* writer =
transferred->getWriter(script_state, ASSERT_NO_EXCEPTION);
auto* isolate = script_state->GetIsolate();
writer->write(script_state, ScriptValue(isolate, V8String(isolate, "a")),
ASSERT_NO_EXCEPTION);
// Run the message loop to allow messages to be delivered.
test::RunPendingTasks();
// Allow Promises to resolve.
v8::MicrotasksScope::PerformCheckpoint(isolate);
v8::Local<v8::Value> result;
auto context = script_state->GetContext();
ASSERT_TRUE(context->Global()
->Get(context, V8String(isolate, "result"))
.ToLocal(&result));
ASSERT_TRUE(result->IsString());
EXPECT_EQ(ToCoreString(result.As<v8::String>()), "a");
}
} // namespace
} // namespace blink
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