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// Copyright (c) 2012 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 "chrome/test/base/module_system_test.h"
#include "base/callback.h"
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "base/lazy_instance.h"
#include "base/memory/scoped_ptr.h"
#include "base/path_service.h"
#include "base/stl_util.h"
#include "base/strings/string_piece.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/renderer/extensions/chrome_v8_context.h"
#include "chrome/renderer/extensions/logging_native_handler.h"
#include "chrome/renderer/extensions/object_backed_native_handler.h"
#include "chrome/renderer/extensions/safe_builtins.h"
#include "ui/base/resource/resource_bundle.h"
#include <map>
#include <string>
using extensions::ModuleSystem;
using extensions::NativeHandler;
using extensions::ObjectBackedNativeHandler;
namespace {
class FailsOnException : public ModuleSystem::ExceptionHandler {
public:
virtual void HandleUncaughtException(const v8::TryCatch& try_catch) OVERRIDE {
FAIL() << "Uncaught exception: " << CreateExceptionString(try_catch);
}
};
class V8ExtensionConfigurator {
public:
V8ExtensionConfigurator()
: safe_builtins_(extensions::SafeBuiltins::CreateV8Extension()),
names_(1, safe_builtins_->name()),
configuration_(new v8::ExtensionConfiguration(
names_.size(), vector_as_array(&names_))) {
v8::RegisterExtension(safe_builtins_.get());
}
v8::ExtensionConfiguration* GetConfiguration() {
return configuration_.get();
}
private:
scoped_ptr<v8::Extension> safe_builtins_;
std::vector<const char*> names_;
scoped_ptr<v8::ExtensionConfiguration> configuration_;
};
base::LazyInstance<V8ExtensionConfigurator>::Leaky g_v8_extension_configurator =
LAZY_INSTANCE_INITIALIZER;
} // namespace
// Native JS functions for doing asserts.
class ModuleSystemTest::AssertNatives : public ObjectBackedNativeHandler {
public:
explicit AssertNatives(extensions::ChromeV8Context* context)
: ObjectBackedNativeHandler(context),
assertion_made_(false),
failed_(false) {
RouteFunction("AssertTrue", base::Bind(&AssertNatives::AssertTrue,
base::Unretained(this)));
RouteFunction("AssertFalse", base::Bind(&AssertNatives::AssertFalse,
base::Unretained(this)));
}
bool assertion_made() { return assertion_made_; }
bool failed() { return failed_; }
void AssertTrue(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK_EQ(1, args.Length());
assertion_made_ = true;
failed_ = failed_ || !args[0]->ToBoolean()->Value();
}
void AssertFalse(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK_EQ(1, args.Length());
assertion_made_ = true;
failed_ = failed_ || args[0]->ToBoolean()->Value();
}
private:
bool assertion_made_;
bool failed_;
};
// Source map that operates on std::strings.
class ModuleSystemTest::StringSourceMap : public ModuleSystem::SourceMap {
public:
StringSourceMap() {}
virtual ~StringSourceMap() {}
virtual v8::Handle<v8::Value> GetSource(const std::string& name) OVERRIDE {
if (source_map_.count(name) == 0)
return v8::Undefined();
return v8::String::New(source_map_[name].c_str());
}
virtual bool Contains(const std::string& name) OVERRIDE {
return source_map_.count(name);
}
void RegisterModule(const std::string& name, const std::string& source) {
CHECK_EQ(0u, source_map_.count(name)) << "Module " << name << " not found";
source_map_[name] = source;
}
private:
std::map<std::string, std::string> source_map_;
};
ModuleSystemTest::ModuleSystemTest()
: isolate_(v8::Isolate::GetCurrent()),
handle_scope_(isolate_),
context_(
new extensions::ChromeV8Context(
v8::Context::New(
isolate_,
g_v8_extension_configurator.Get().GetConfiguration()),
NULL, // WebFrame
NULL, // Extension
extensions::Feature::UNSPECIFIED_CONTEXT)),
source_map_(new StringSourceMap()),
should_assertions_be_made_(true) {
context_->v8_context()->Enter();
assert_natives_ = new AssertNatives(context_.get());
module_system_.reset(new ModuleSystem(context_.get(), source_map_.get()));
module_system_->RegisterNativeHandler("assert", scoped_ptr<NativeHandler>(
assert_natives_));
module_system_->RegisterNativeHandler("logging", scoped_ptr<NativeHandler>(
new extensions::LoggingNativeHandler(context_.get())));
module_system_->SetExceptionHandlerForTest(
scoped_ptr<ModuleSystem::ExceptionHandler>(new FailsOnException));
}
ModuleSystemTest::~ModuleSystemTest() {
module_system_.reset();
context_->v8_context()->Exit();
}
void ModuleSystemTest::RegisterModule(const std::string& name,
const std::string& code) {
source_map_->RegisterModule(name, code);
}
void ModuleSystemTest::RegisterModule(const std::string& name,
int resource_id) {
const std::string& code = ResourceBundle::GetSharedInstance().
GetRawDataResource(resource_id).as_string();
source_map_->RegisterModule(name, code);
}
void ModuleSystemTest::OverrideNativeHandler(const std::string& name,
const std::string& code) {
RegisterModule(name, code);
module_system_->OverrideNativeHandlerForTest(name);
}
void ModuleSystemTest::RegisterTestFile(const std::string& module_name,
const std::string& file_name) {
base::FilePath test_js_file_path;
ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_js_file_path));
test_js_file_path = test_js_file_path.AppendASCII("extensions")
.AppendASCII(file_name);
std::string test_js;
ASSERT_TRUE(file_util::ReadFileToString(test_js_file_path, &test_js));
source_map_->RegisterModule(module_name, test_js);
}
void ModuleSystemTest::TearDown() {
// All tests must assert at least once unless otherwise specified.
EXPECT_EQ(should_assertions_be_made_,
assert_natives_->assertion_made());
EXPECT_FALSE(assert_natives_->failed());
}
void ModuleSystemTest::ExpectNoAssertionsMade() {
should_assertions_be_made_ = false;
}
v8::Handle<v8::Object> ModuleSystemTest::CreateGlobal(const std::string& name) {
v8::HandleScope handle_scope;
v8::Handle<v8::Object> object = v8::Object::New();
v8::Context::GetCurrent()->Global()->Set(v8::String::New(name.c_str()),
object);
return handle_scope.Close(object);
}
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