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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_UNITTESTS_TEST_UTILS_H_
#define V8_UNITTESTS_TEST_UTILS_H_
#include <memory>
#include <vector>
#include "include/v8.h"
#include "src/api/api-inl.h"
#include "src/base/macros.h"
#include "src/base/utils/random-number-generator.h"
#include "src/handles/handles.h"
#include "src/objects/objects-inl.h"
#include "src/objects/objects.h"
#include "src/zone/accounting-allocator.h"
#include "src/zone/zone.h"
#include "testing/gtest-support.h"
namespace v8 {
class ArrayBufferAllocator;
using CounterMap = std::map<std::string, int>;
enum CountersMode { kNoCounters, kEnableCounters };
// When PointerCompressionMode is kEnforcePointerCompression, the Isolate is
// created with pointer compression force enabled. When it's
// kDefaultPointerCompression then the Isolate is created with the default
// pointer compression state for the current build.
enum PointerCompressionMode {
kDefaultPointerCompression,
kEnforcePointerCompression
};
// RAII-like Isolate instance wrapper.
class IsolateWrapper final {
public:
explicit IsolateWrapper(CountersMode counters_mode,
PointerCompressionMode pointer_compression_mode);
~IsolateWrapper();
v8::Isolate* isolate() const { return isolate_; }
private:
std::unique_ptr<v8::ArrayBuffer::Allocator> array_buffer_allocator_;
std::unique_ptr<CounterMap> counter_map_;
v8::Isolate* isolate_;
DISALLOW_COPY_AND_ASSIGN(IsolateWrapper);
};
//
// A set of mixins from which the test fixtures will be constructed.
//
template <typename TMixin, CountersMode kCountersMode = kNoCounters,
PointerCompressionMode kPointerCompressionMode =
kDefaultPointerCompression>
class WithIsolateMixin : public TMixin {
public:
WithIsolateMixin()
: isolate_wrapper_(kCountersMode, kPointerCompressionMode) {}
v8::Isolate* v8_isolate() const { return isolate_wrapper_.isolate(); }
private:
v8::IsolateWrapper isolate_wrapper_;
};
template <typename TMixin, CountersMode kCountersMode = kNoCounters>
using WithPointerCompressionIsolateMixin =
WithIsolateMixin<TMixin, kCountersMode, kEnforcePointerCompression>;
template <typename TMixin>
class WithIsolateScopeMixin : public TMixin {
public:
WithIsolateScopeMixin()
: isolate_scope_(this->v8_isolate()), handle_scope_(this->v8_isolate()) {}
v8::Isolate* isolate() const { return this->v8_isolate(); }
v8::internal::Isolate* i_isolate() const {
return reinterpret_cast<v8::internal::Isolate*>(this->v8_isolate());
}
private:
v8::Isolate::Scope isolate_scope_;
v8::HandleScope handle_scope_;
DISALLOW_COPY_AND_ASSIGN(WithIsolateScopeMixin);
};
template <typename TMixin>
class WithContextMixin : public TMixin {
public:
WithContextMixin()
: context_(Context::New(this->v8_isolate())), context_scope_(context_) {}
const Local<Context>& context() const { return v8_context(); }
const Local<Context>& v8_context() const { return context_; }
Local<Value> RunJS(const char* source) {
return RunJS(
v8::String::NewFromUtf8(this->v8_isolate(), source).ToLocalChecked());
}
Local<Value> RunJS(v8::String::ExternalOneByteStringResource* source) {
return RunJS(v8::String::NewExternalOneByte(this->v8_isolate(), source)
.ToLocalChecked());
}
v8::Local<v8::String> NewString(const char* string) {
return v8::String::NewFromUtf8(this->v8_isolate(), string).ToLocalChecked();
}
void SetGlobalProperty(const char* name, v8::Local<v8::Value> value) {
CHECK(v8_context()
->Global()
->Set(v8_context(), NewString(name), value)
.FromJust());
}
private:
Local<Value> RunJS(Local<String> source) {
auto context = this->v8_isolate()->GetCurrentContext();
Local<Script> script =
v8::Script::Compile(context, source).ToLocalChecked();
return script->Run(context).ToLocalChecked();
}
v8::Local<v8::Context> context_;
v8::Context::Scope context_scope_;
DISALLOW_COPY_AND_ASSIGN(WithContextMixin);
};
// Use v8::internal::TestWithIsolate if you are testing internals,
// aka. directly work with Handles.
using TestWithIsolate = //
WithIsolateScopeMixin< //
WithIsolateMixin< //
::testing::Test>>;
// Use v8::internal::TestWithNativeContext if you are testing internals,
// aka. directly work with Handles.
using TestWithContext = //
WithContextMixin< //
WithIsolateScopeMixin< //
WithIsolateMixin< //
::testing::Test>>>;
using TestWithIsolateAndPointerCompression = //
WithContextMixin< //
WithIsolateScopeMixin< //
WithPointerCompressionIsolateMixin< //
::testing::Test>>>;
namespace internal {
// Forward declarations.
class Factory;
template <typename TMixin>
class WithInternalIsolateMixin : public TMixin {
public:
WithInternalIsolateMixin() = default;
Factory* factory() const { return isolate()->factory(); }
Isolate* isolate() const { return TMixin::i_isolate(); }
Handle<NativeContext> native_context() const {
return isolate()->native_context();
}
template <typename T = Object>
Handle<T> RunJS(const char* source) {
return Handle<T>::cast(RunJSInternal(source));
}
Handle<Object> RunJSInternal(const char* source) {
return Utils::OpenHandle(*TMixin::RunJS(source));
}
template <typename T = Object>
Handle<T> RunJS(::v8::String::ExternalOneByteStringResource* source) {
return Handle<T>::cast(RunJSInternal(source));
}
Handle<Object> RunJSInternal(
::v8::String::ExternalOneByteStringResource* source) {
return Utils::OpenHandle(*TMixin::RunJS(source));
}
base::RandomNumberGenerator* random_number_generator() const {
return isolate()->random_number_generator();
}
private:
DISALLOW_COPY_AND_ASSIGN(WithInternalIsolateMixin);
};
template <typename TMixin>
class WithZoneMixin : public TMixin {
public:
WithZoneMixin() : zone_(&allocator_, ZONE_NAME) {}
Zone* zone() { return &zone_; }
private:
v8::internal::AccountingAllocator allocator_;
Zone zone_;
DISALLOW_COPY_AND_ASSIGN(WithZoneMixin);
};
using TestWithIsolate = //
WithInternalIsolateMixin< //
WithIsolateScopeMixin< //
WithIsolateMixin< //
::testing::Test>>>;
using TestWithZone = WithZoneMixin<::testing::Test>;
using TestWithIsolateAndZone = //
WithInternalIsolateMixin< //
WithIsolateScopeMixin< //
WithIsolateMixin< //
WithZoneMixin< //
::testing::Test>>>>;
using TestWithNativeContext = //
WithInternalIsolateMixin< //
WithContextMixin< //
WithIsolateScopeMixin< //
WithIsolateMixin< //
::testing::Test>>>>;
using TestWithNativeContextAndCounters = //
WithInternalIsolateMixin< //
WithContextMixin< //
WithIsolateScopeMixin< //
WithIsolateMixin< //
::testing::Test, kEnableCounters>>>>;
using TestWithNativeContextAndZone = //
WithZoneMixin< //
WithInternalIsolateMixin< //
WithContextMixin< //
WithIsolateScopeMixin< //
WithIsolateMixin< //
::testing::Test>>>>>;
class SaveFlags {
public:
SaveFlags();
~SaveFlags();
private:
#define FLAG_MODE_APPLY(ftype, ctype, nam, def, cmt) ctype SAVED_##nam;
#include "src/flags/flag-definitions.h" // NOLINT
#undef FLAG_MODE_APPLY
DISALLOW_COPY_AND_ASSIGN(SaveFlags);
};
// For GTest.
inline void PrintTo(Object o, ::std::ostream* os) {
*os << reinterpret_cast<void*>(o.ptr());
}
inline void PrintTo(Smi o, ::std::ostream* os) {
*os << reinterpret_cast<void*>(o.ptr());
}
} // namespace internal
} // namespace v8
#endif // V8_UNITTESTS_TEST_UTILS_H_
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