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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/websockets/websocket_error.h"
#include <optional>
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_testing.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_websocket_close_info.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_websocket_error.h"
#include "third_party/blink/renderer/modules/websockets/websocket_channel.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
#include "third_party/blink/renderer/platform/testing/task_environment.h"
#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
namespace blink {
namespace {
class WebSocketErrorTest : public ::testing::Test {
public:
// Creates a WebSocketError API from a WebSocketCloseInfo object, optionally
// with "closeCode" and "reason" attributes set.
static WebSocketError* CreateError(
std::optional<uint16_t> close_code = std::nullopt,
String reason = String(),
ExceptionState& exception_state = ASSERT_NO_EXCEPTION) {
auto* close_info = WebSocketCloseInfo::Create();
if (close_code) {
close_info->setCloseCode(close_code.value());
}
if (!reason.IsNull()) {
close_info->setReason(reason);
}
return WebSocketError::Create("", close_info, exception_state);
}
private:
test::TaskEnvironment task_environment_;
};
TEST_F(WebSocketErrorTest, DefaultConstruct) {
auto* error = WebSocketError::Create("", WebSocketCloseInfo::Create(),
ASSERT_NO_EXCEPTION);
ASSERT_TRUE(error);
EXPECT_EQ(error->message(), "");
EXPECT_EQ(error->code(), 0);
EXPECT_EQ(error->closeCode(), std::nullopt);
EXPECT_EQ(error->reason(), "");
}
TEST_F(WebSocketErrorTest, ConstructWithMessage) {
auto* error = WebSocketError::Create("hello", WebSocketCloseInfo::Create(),
ASSERT_NO_EXCEPTION);
ASSERT_TRUE(error);
EXPECT_EQ(error->message(), "hello");
EXPECT_EQ(error->code(), 0);
EXPECT_EQ(error->closeCode(), std::nullopt);
EXPECT_EQ(error->reason(), "");
}
TEST_F(WebSocketErrorTest, ConstructWithCloseCode) {
auto* error = CreateError(4011);
ASSERT_TRUE(error);
EXPECT_EQ(error->closeCode(), 4011);
EXPECT_EQ(error->reason(), "");
}
TEST_F(WebSocketErrorTest, ConstructWithReason) {
auto* error = CreateError(std::nullopt, "wow");
ASSERT_TRUE(error);
EXPECT_EQ(error->closeCode(), WebSocketChannel::kCloseEventCodeNormalClosure);
EXPECT_EQ(error->reason(), "wow");
}
TEST_F(WebSocketErrorTest, ConstructWithEmptyReason) {
auto* error = CreateError(std::nullopt, "");
ASSERT_TRUE(error);
EXPECT_EQ(error->closeCode(), std::nullopt);
EXPECT_EQ(error->reason(), "");
}
TEST_F(WebSocketErrorTest, ConstructWithInvalidCloseCode) {
V8TestingScope scope;
DummyExceptionStateForTesting& exception_state = scope.GetExceptionState();
auto* error = CreateError(1005, String(), exception_state);
EXPECT_FALSE(error);
ASSERT_TRUE(exception_state.HadException());
EXPECT_EQ(
"The close code must be either 1000, or between 3000 and 4999. 1005 is "
"neither.",
exception_state.Message());
EXPECT_EQ(DOMExceptionCode::kInvalidAccessError,
DOMExceptionCode{exception_state.Code()});
}
TEST_F(WebSocketErrorTest, ConstructWithOverlongReason) {
V8TestingScope scope;
DummyExceptionStateForTesting& exception_state = scope.GetExceptionState();
StringBuilder builder;
for (int i = 0; i < 32; ++i) {
// Sparkling Heart emoji. Takes 4 bytes when encoded as unicode.
builder.Append(UChar32{0x1F496});
}
auto* error =
CreateError(std::nullopt, builder.ReleaseString(), exception_state);
EXPECT_FALSE(error);
ASSERT_TRUE(exception_state.HadException());
EXPECT_EQ("The close reason must not be greater than 123 UTF-8 bytes.",
exception_state.Message());
EXPECT_EQ(DOMExceptionCode::kSyntaxError,
DOMExceptionCode{exception_state.Code()});
}
TEST_F(WebSocketErrorTest, InternalCreate) {
V8TestingScope scope;
auto* isolate = scope.GetIsolate();
auto context = scope.GetContext();
auto v8value = WebSocketError::Create(isolate, "message", 1000, "reason");
ASSERT_FALSE(v8value.IsEmpty());
ASSERT_TRUE(v8value->IsObject());
v8::Local<v8::Value> stack;
ASSERT_TRUE(v8value.As<v8::Object>()
->Get(context, V8String(isolate, "stack"))
.ToLocal(&stack));
// Maybe "stack" will return some kind of structured object someday?
// Explicitly convert it to a string just in case.
v8::Local<v8::String> stack_as_v8string;
ASSERT_TRUE(stack->ToString(context).ToLocal(&stack_as_v8string));
String stack_string = ToCoreString(isolate, stack_as_v8string);
EXPECT_TRUE(stack_string.Contains("message"));
WebSocketError* error = V8WebSocketError::ToWrappable(isolate, v8value);
ASSERT_TRUE(error);
EXPECT_EQ(error->code(), 0);
EXPECT_EQ(error->closeCode(), 1000u);
EXPECT_EQ(error->message(), "message");
EXPECT_EQ(error->reason(), "reason");
}
} // namespace
} // namespace blink
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