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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gin/converter.h"
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include <array>
#include <string>
#include "base/compiler_specific.h"
#include "base/strings/utf_string_conversions.h"
#include "gin/function_template.h"
#include "gin/handle.h"
#include "gin/public/isolate_holder.h"
#include "gin/test/v8_test.h"
#include "gin/wrappable.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "v8/include/v8-container.h"
#include "v8/include/v8-forward.h"
#include "v8/include/v8-function.h"
#include "v8/include/v8-isolate.h"
#include "v8/include/v8-primitive.h"
#include "v8/include/v8-template.h"
namespace gin {
using v8::Array;
using v8::Boolean;
using v8::HandleScope;
using v8::Integer;
using v8::Local;
using v8::Null;
using v8::Number;
using v8::Object;
using v8::String;
using v8::Undefined;
using v8::Value;
typedef V8Test ConverterTest;
TEST_F(ConverterTest, Bool) {
HandleScope handle_scope(instance_->isolate());
EXPECT_TRUE(Converter<bool>::ToV8(instance_->isolate(), true)->StrictEquals(
Boolean::New(instance_->isolate(), true)));
EXPECT_TRUE(Converter<bool>::ToV8(instance_->isolate(), false)->StrictEquals(
Boolean::New(instance_->isolate(), false)));
struct TestData {
Local<Value> input;
bool expected;
};
auto test_data = std::to_array<TestData>({
{Boolean::New(instance_->isolate(), false).As<Value>(), false},
{Boolean::New(instance_->isolate(), true).As<Value>(), true},
{Number::New(instance_->isolate(), 0).As<Value>(), false},
{Number::New(instance_->isolate(), 1).As<Value>(), true},
{Number::New(instance_->isolate(), -1).As<Value>(), true},
{Number::New(instance_->isolate(), 0.1).As<Value>(), true},
{String::NewFromUtf8(instance_->isolate(), "", v8::NewStringType::kNormal)
.ToLocalChecked()
.As<Value>(),
false},
{String::NewFromUtf8(instance_->isolate(), "foo",
v8::NewStringType::kNormal)
.ToLocalChecked()
.As<Value>(),
true},
{Object::New(instance_->isolate()).As<Value>(), true},
{Null(instance_->isolate()).As<Value>(), false},
{Undefined(instance_->isolate()).As<Value>(), false},
});
for (size_t i = 0; i < std::size(test_data); ++i) {
bool result = false;
EXPECT_TRUE(Converter<bool>::FromV8(instance_->isolate(),
test_data[i].input, &result));
EXPECT_EQ(test_data[i].expected, result);
result = true;
EXPECT_TRUE(Converter<bool>::FromV8(instance_->isolate(),
test_data[i].input, &result));
EXPECT_EQ(test_data[i].expected, result);
}
}
TEST_F(ConverterTest, String16) {
v8::Isolate* isolate = instance_->isolate();
HandleScope handle_scope(isolate);
EXPECT_TRUE(Converter<std::u16string>::ToV8(isolate, u"")
->StrictEquals(StringToV8(isolate, "")));
EXPECT_TRUE(Converter<std::u16string>::ToV8(isolate, u"hello")
->StrictEquals(StringToV8(isolate, "hello")));
std::u16string result;
ASSERT_FALSE(
Converter<std::u16string>::FromV8(isolate, v8::False(isolate), &result));
ASSERT_FALSE(
Converter<std::u16string>::FromV8(isolate, v8::True(isolate), &result));
ASSERT_TRUE(Converter<std::u16string>::FromV8(
isolate, v8::String::Empty(isolate), &result));
EXPECT_EQ(result, std::u16string());
ASSERT_TRUE(Converter<std::u16string>::FromV8(
isolate, StringToV8(isolate, "hello"), &result));
EXPECT_EQ(result, u"hello");
}
TEST_F(ConverterTest, Int32) {
HandleScope handle_scope(instance_->isolate());
auto test_data_to = std::to_array<int>({-1, 0, 1});
for (size_t i = 0; i < std::size(test_data_to); ++i) {
EXPECT_TRUE(Converter<int32_t>::ToV8(instance_->isolate(), test_data_to[i])
->StrictEquals(
Integer::New(instance_->isolate(), test_data_to[i])));
}
struct TestDataFrom {
v8::Local<v8::Value> input;
bool expect_success;
int expected_result;
};
auto test_data_from = std::to_array<TestDataFrom>({
{Boolean::New(instance_->isolate(), false).As<Value>(), false, 0},
{Boolean::New(instance_->isolate(), true).As<Value>(), false, 0},
{Integer::New(instance_->isolate(), -1).As<Value>(), true, -1},
{Integer::New(instance_->isolate(), 0).As<Value>(), true, 0},
{Integer::New(instance_->isolate(), 1).As<Value>(), true, 1},
{Number::New(instance_->isolate(), -1).As<Value>(), true, -1},
{Number::New(instance_->isolate(), 1.1).As<Value>(), false, 0},
{String::NewFromUtf8(instance_->isolate(), "42",
v8::NewStringType::kNormal)
.ToLocalChecked()
.As<Value>(),
false, 0},
{String::NewFromUtf8(instance_->isolate(), "foo",
v8::NewStringType::kNormal)
.ToLocalChecked()
.As<Value>(),
false, 0},
{Object::New(instance_->isolate()).As<Value>(), false, 0},
{Array::New(instance_->isolate()).As<Value>(), false, 0},
{v8::Null(instance_->isolate()).As<Value>(), false, 0},
{v8::Undefined(instance_->isolate()).As<Value>(), false, 0},
});
for (size_t i = 0; i < std::size(test_data_from); ++i) {
int32_t result = std::numeric_limits<int32_t>::min();
bool success = Converter<int32_t>::FromV8(instance_->isolate(),
test_data_from[i].input, &result);
EXPECT_EQ(test_data_from[i].expect_success, success) << i;
if (success)
EXPECT_EQ(test_data_from[i].expected_result, result) << i;
}
}
TEST_F(ConverterTest, Vector) {
HandleScope handle_scope(instance_->isolate());
std::vector<int> expected;
expected.push_back(-1);
expected.push_back(0);
expected.push_back(1);
auto js_array =
Converter<std::vector<int>>::ToV8(instance_->isolate(), expected)
.As<Array>();
EXPECT_EQ(3u, js_array->Length());
v8::Local<v8::Context> context = instance_->isolate()->GetCurrentContext();
for (size_t i = 0; i < expected.size(); ++i) {
EXPECT_TRUE(
Integer::New(instance_->isolate(), expected[i])
->StrictEquals(
js_array->Get(context, static_cast<int>(i)).ToLocalChecked()));
}
}
TEST_F(ConverterTest, VectorOfVectors) {
HandleScope handle_scope(instance_->isolate());
std::vector<std::vector<int>> vector_of_vectors = {
{1, 2, 3}, {4, 5, 6},
};
v8::Local<v8::Value> v8_value =
ConvertToV8(instance_->isolate(), vector_of_vectors);
std::vector<std::vector<int>> out_value;
ASSERT_TRUE(ConvertFromV8(instance_->isolate(), v8_value, &out_value));
EXPECT_THAT(out_value, testing::ContainerEq(vector_of_vectors));
}
namespace {
class MyObject : public Wrappable<MyObject> {
public:
static WrapperInfo kWrapperInfo;
static gin::Handle<MyObject> Create(v8::Isolate* isolate) {
return CreateHandle(isolate, new MyObject());
}
};
WrapperInfo MyObject::kWrapperInfo = {kEmbedderNativeGin};
} // namespace
TEST_F(ConverterTest, VectorOfWrappables) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
Handle<MyObject> obj = MyObject::Create(isolate);
std::vector<MyObject*> vector = {obj.get()};
v8::MaybeLocal<v8::Value> maybe = ConvertToV8(isolate, vector);
v8::Local<v8::Value> array;
ASSERT_TRUE(maybe.ToLocal(&array));
v8::Local<v8::Value> array2;
ASSERT_TRUE(TryConvertToV8(isolate, vector, &array2));
std::vector<MyObject*> out_value;
ASSERT_TRUE(ConvertFromV8(isolate, array, &out_value));
EXPECT_THAT(out_value, testing::ContainerEq(vector));
std::vector<MyObject*> out_value2;
ASSERT_TRUE(ConvertFromV8(isolate, array2, &out_value2));
EXPECT_THAT(out_value2, testing::ContainerEq(vector));
}
namespace {
class MoveOnlyObject {
public:
MoveOnlyObject() = default;
MoveOnlyObject(const MoveOnlyObject&) = delete;
MoveOnlyObject& operator=(const MoveOnlyObject&) = delete;
MoveOnlyObject(MoveOnlyObject&&) noexcept = default;
MoveOnlyObject& operator=(MoveOnlyObject&&) noexcept = default;
};
} // namespace
template <>
struct Converter<MoveOnlyObject> {
static v8::Local<v8::Value> ToV8(v8::Isolate* isolate, MoveOnlyObject in) {
return v8::Undefined(isolate);
}
static bool FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
MoveOnlyObject* out) {
*out = MoveOnlyObject();
return true;
}
};
TEST_F(ConverterTest, MoveOnlyParameters) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
auto receives_move_only_obj = [](MoveOnlyObject obj) {};
auto func_templ = gin::CreateFunctionTemplate(
isolate, base::BindRepeating(receives_move_only_obj));
v8::Local<v8::Context> context = instance_->isolate()->GetCurrentContext();
auto func = func_templ->GetFunction(context).ToLocalChecked();
v8::Local<v8::Value> argv[] = {v8::Undefined(isolate)};
func->Call(context, v8::Undefined(isolate), 1, argv).ToLocalChecked();
}
TEST_F(ConverterTest, VectorOfMoveOnly) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Value> v8_value = v8::Array::New(instance_->isolate(), 1);
std::vector<MoveOnlyObject> out_value;
ASSERT_TRUE(ConvertFromV8(instance_->isolate(), v8_value, &out_value));
EXPECT_EQ(out_value.size(), 1u);
}
} // namespace gin
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