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// Copyright 2013 The Chromium 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 "base/logging.h"
#include "base/macros.h"
#include "gin/arguments.h"
#include "gin/handle.h"
#include "gin/object_template_builder.h"
#include "gin/per_isolate_data.h"
#include "gin/public/isolate_holder.h"
#include "gin/test/v8_test.h"
#include "gin/try_catch.h"
#include "gin/wrappable.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gin {
// This useless base class ensures that the value of a pointer to a MyObject
// (below) is not the same as the value of that pointer cast to the object's
// WrappableBase base.
class BaseClass {
public:
BaseClass() : value_(23) {}
virtual ~BaseClass() = default;
// So the compiler doesn't complain that |value_| is unused.
int value() const { return value_; }
private:
int value_;
DISALLOW_COPY_AND_ASSIGN(BaseClass);
};
class MyObject : public BaseClass,
public Wrappable<MyObject> {
public:
static WrapperInfo kWrapperInfo;
static gin::Handle<MyObject> Create(v8::Isolate* isolate) {
return CreateHandle(isolate, new MyObject());
}
int value() const { return value_; }
void set_value(int value) { value_ = value; }
protected:
MyObject() : value_(0) {}
ObjectTemplateBuilder GetObjectTemplateBuilder(v8::Isolate* isolate) final {
return Wrappable<MyObject>::GetObjectTemplateBuilder(isolate)
.SetProperty("value", &MyObject::value, &MyObject::set_value);
}
~MyObject() override = default;
private:
int value_;
};
class MyObject2 : public Wrappable<MyObject2> {
public:
static WrapperInfo kWrapperInfo;
};
WrapperInfo MyObject::kWrapperInfo = { kEmbedderNativeGin };
WrapperInfo MyObject2::kWrapperInfo = { kEmbedderNativeGin };
typedef V8Test WrappableTest;
TEST_F(WrappableTest, WrapAndUnwrap) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
Handle<MyObject> obj = MyObject::Create(isolate);
v8::Local<v8::Value> wrapper =
ConvertToV8(isolate, obj.get()).ToLocalChecked();
EXPECT_FALSE(wrapper.IsEmpty());
MyObject* unwrapped = NULL;
EXPECT_TRUE(ConvertFromV8(isolate, wrapper, &unwrapped));
EXPECT_EQ(obj.get(), unwrapped);
}
TEST_F(WrappableTest, UnwrapFailures) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
// Something that isn't an object.
v8::Local<v8::Value> thing = v8::Number::New(isolate, 42);
MyObject* unwrapped = NULL;
EXPECT_FALSE(ConvertFromV8(isolate, thing, &unwrapped));
EXPECT_FALSE(unwrapped);
// An object that's not wrapping anything.
thing = v8::Object::New(isolate);
EXPECT_FALSE(ConvertFromV8(isolate, thing, &unwrapped));
EXPECT_FALSE(unwrapped);
// An object that's wrapping a C++ object of the wrong type.
thing.Clear();
thing = ConvertToV8(isolate, new MyObject2()).ToLocalChecked();
EXPECT_FALSE(ConvertFromV8(isolate, thing, &unwrapped));
EXPECT_FALSE(unwrapped);
}
TEST_F(WrappableTest, GetAndSetProperty) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
gin::Handle<MyObject> obj = MyObject::Create(isolate);
obj->set_value(42);
EXPECT_EQ(42, obj->value());
v8::Local<v8::String> source = StringToV8(isolate,
"(function (obj) {"
" if (obj.value !== 42) throw 'FAIL';"
" else obj.value = 191; })");
EXPECT_FALSE(source.IsEmpty());
gin::TryCatch try_catch(isolate);
v8::Local<v8::Script> script =
v8::Script::Compile(context_.Get(isolate), source).ToLocalChecked();
v8::Local<v8::Value> val =
script->Run(context_.Get(isolate)).ToLocalChecked();
v8::Local<v8::Function> func;
EXPECT_TRUE(ConvertFromV8(isolate, val, &func));
v8::Local<v8::Value> argv[] = {
ConvertToV8(isolate, obj.get()).ToLocalChecked(),
};
func->Call(v8::Undefined(isolate), 1, argv);
EXPECT_FALSE(try_catch.HasCaught());
EXPECT_EQ("", try_catch.GetStackTrace());
EXPECT_EQ(191, obj->value());
}
} // namespace gin
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