test-api.cc

Google浏览器V8内核代码

// Copyright 2007-2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include <map>
#include <string>

#include "v8.h"

#include "api.h"
#include "snapshot.h"
#include "platform.h"
#include "top.h"
#include "cctest.h"

static bool IsNaN(double x) {
#ifdef WIN32
  return _isnan(x);
#else
  return isnan(x);
#endif
}

using ::v8::ObjectTemplate;
using ::v8::Value;
using ::v8::Context;
using ::v8::Local;
using ::v8::String;
using ::v8::Script;
using ::v8::Function;
using ::v8::AccessorInfo;
using ::v8::Extension;

namespace i = ::v8::internal;

static Local<Value> v8_num(double x) {
  return v8::Number::New(x);
}


static Local<String> v8_str(const char* x) {
  return String::New(x);
}


static Local<Script> v8_compile(const char* x) {
  return Script::Compile(v8_str(x));
}


// A LocalContext holds a reference to a v8::Context.
class LocalContext {
 public:
  LocalContext(v8::ExtensionConfiguration* extensions = 0,
               v8::Handle<ObjectTemplate> global_template =
                   v8::Handle<ObjectTemplate>(),
               v8::Handle<Value> global_object = v8::Handle<Value>())
    : context_(Context::New(extensions, global_template, global_object)) {
    context_->Enter();
  }

  virtual ~LocalContext() {
    context_->Exit();
    context_.Dispose();
  }

  Context* operator->() { return *context_; }
  Context* operator*() { return *context_; }
  Local<Context> local() { return Local<Context>::New(context_); }
  bool IsReady() { return !context_.IsEmpty(); }

 private:
  v8::Persistent<Context> context_;
};


// Switches between all the Api tests using the threading support.
// In order to get a surprising but repeatable pattern of thread
// switching it has extra semaphores to control the order in which
// the tests alternate, not relying solely on the big V8 lock.
//
// A test is augmented with calls to ApiTestFuzzer::Fuzz() in its
// callbacks.  This will have no effect when we are not running the
// thread fuzzing test.  In the thread fuzzing test it will
// pseudorandomly select a successor thread and switch execution
// to that thread, suspending the current test.
class ApiTestFuzzer: public v8::internal::Thread {
 public:
  void CallTest();
  explicit ApiTestFuzzer(int num)
      : test_number_(num),
        gate_(v8::internal::OS::CreateSemaphore(0)),
        active_(true) {
  }

  // The ApiTestFuzzer is also a Thread, so it has a Run method.
  virtual void Run();

  enum PartOfTest { FIRST_PART, SECOND_PART };

  static void Setup(PartOfTest part);
  static void RunAllTests();
  static void TearDown();
  // This method switches threads if we are running the Threading test.
  // Otherwise it does nothing.
  static void Fuzz();
 private:
  static bool fuzzing_;
  static int tests_being_run_;
  static int current_;
  static int active_tests_;
  static bool NextThread();
  int test_number_;
  v8::internal::Semaphore* gate_;
  bool active_;
  void ContextSwitch();
  static int GetNextTestNumber();
  static v8::internal::Semaphore* all_tests_done_;
};


#define THREADED_TEST(Name)                                          \
  static void Test##Name();                                          \
  RegisterThreadedTest register_##Name(Test##Name);                  \
  /* */ TEST(Name)


class RegisterThreadedTest {
 public:
  explicit RegisterThreadedTest(CcTest::TestFunction* callback)
      : callback_(callback) {
    prev_ = first_;
    first_ = this;
    count_++;
  }
  static int count() { return count_; }
  static RegisterThreadedTest* nth(int i) {
    ASSERT(i < count());
    RegisterThreadedTest* current = first_;
    while (i > 0) {
      i--;
      current = current->prev_;
    }
    return current;
  }
  CcTest::TestFunction* callback() { return callback_; }
  ApiTestFuzzer* fuzzer_;

 private:
  static RegisterThreadedTest* first_;
  static int count_;
  CcTest::TestFunction* callback_;
  RegisterThreadedTest* prev_;
};


RegisterThreadedTest *RegisterThreadedTest::first_ = NULL;
int RegisterThreadedTest::count_ = 0;


static int signature_callback_count;
static v8::Handle<Value> IncrementingSignatureCallback(
    const v8::Arguments& args) {
  ApiTestFuzzer::Fuzz();
  signature_callback_count++;
  v8::Handle<v8::Array> result = v8::Array::New(args.Length());
  for (int i = 0; i < args.Length(); i++)
    result->Set(v8::Integer::New(i), args[i]);
  return result;
}


static v8::Handle<Value> SignatureCallback(const v8::Arguments& args) {
  ApiTestFuzzer::Fuzz();
  v8::Handle<v8::Array> result = v8::Array::New(args.Length());
  for (int i = 0; i < args.Length(); i++) {
    result->Set(v8::Integer::New(i), args[i]);
  }
  return result;
}


THREADED_TEST(Handles) {
  v8::HandleScope scope;
  Local<Context> local_env;
  {
    LocalContext env;
    local_env = env.local();
  }

  // Local context should still be live.
  CHECK(!local_env.IsEmpty());
  local_env->Enter();

  v8::Handle<v8::Primitive> undef = v8::Undefined();
  CHECK(!undef.IsEmpty());
  CHECK(undef->IsUndefined());

  const char* c_source = "1 + 2 + 3";
  Local<String> source = String::New(c_source);
  Local<Script> script = Script::Compile(source);
  CHECK_EQ(6, script->Run()->Int32Value());

  local_env->Exit();
}


// Helper function that compiles and runs the source.
static Local<Value> CompileRun(const char* source) {
  return Script::Compile(String::New(source))->Run();
}

THREADED_TEST(ReceiverSignature) {
  v8::HandleScope scope;
  LocalContext env;
  v8::Handle<v8::FunctionTemplate> fun = v8::FunctionTemplate::New();
  v8::Handle<v8::Signature> sig = v8::Signature::New(fun);
  fun->PrototypeTemplate()->Set(
      v8_str("m"),
      v8::FunctionTemplate::New(IncrementingSignatureCallback,
                                v8::Handle<Value>(),
                                sig));
  env->Global()->Set(v8_str("Fun"), fun->GetFunction());
  signature_callback_count = 0;
  CompileRun(
      "var o = new Fun();"
      "o.m();");
  CHECK_EQ(1, signature_callback_count);
  v8::Handle<v8::FunctionTemplate> sub_fun = v8::FunctionTemplate::New();
  sub_fun->Inherit(fun);
  env->Global()->Set(v8_str("SubFun"), sub_fun->GetFunction());
  CompileRun(
      "var o = new SubFun();"
      "o.m();");
  CHECK_EQ(2, signature_callback_count);

  v8::TryCatch try_catch;
  CompileRun(
      "var o = { };"
      "o.m = Fun.prototype.m;"
      "o.m();");
  CHECK_EQ(2, signature_callback_count);
  CHECK(try_catch.HasCaught());
  try_catch.Reset();
  v8::Handle<v8::FunctionTemplate> unrel_fun = v8::FunctionTemplate::New();
  sub_fun->Inherit(fun);
  env->Global()->Set(v8_str("UnrelFun"), unrel_fun->GetFunction());
  CompileRun(
      "var o = new UnrelFun();"
      "o.m = Fun.prototype.m;"
      "o.m();");
  CHECK_EQ(2, signature_callback_count);
  CHECK(try_catch.HasCaught());
}




THREADED_TEST(ArgumentSignature) {
  v8::HandleScope scope;
  LocalContext env;
  v8::Handle<v8::FunctionTemplate> cons = v8::FunctionTemplate::New();
  cons->SetClassName(v8_str("Cons"));
  v8::Handle<v8::Signature> sig =
      v8::Signature::New(v8::Handle<v8::FunctionTemplate>(), 1, &cons);
  v8::Handle<v8::FunctionTemplate> fun =
      v8::FunctionTemplate::New(SignatureCallback, v8::Handle<Value>(), sig);
  env->Global()->Set(v8_str("Cons"), cons->GetFunction());
  env->Global()->Set(v8_str("Fun1"), fun->GetFunction());

  v8::Handle<Value> value1 = CompileRun("Fun1(4) == '';");
  ASSERT(value1->IsTrue());

  v8::Handle<Value> value2 = CompileRun("Fun1(new Cons()) == '[object Cons]';");
  ASSERT(value2->IsTrue());

  v8::Handle<Value> value3 = CompileRun("Fun1() == '';");
  ASSERT(value3->IsTrue());

  v8::Handle<v8::FunctionTemplate> cons1 = v8::FunctionTemplate::New();
  cons1->SetClassName(v8_str("Cons1"));
  v8::Handle<v8::FunctionTemplate> cons2 = v8::FunctionTemplate::New();
  cons2->SetClassName(v8_str("Cons2"));
  v8::Handle<v8::FunctionTemplate> cons3 = v8::FunctionTemplate::New();
  cons3->SetClassName(v8_str("Cons3"));

  v8::Handle<v8::FunctionTemplate> args[3] = { cons1, cons2, cons3 };
  v8::Handle<v8::Signature> wsig =
      v8::Signature::New(v8::Handle<v8::FunctionTemplate>(), 3, args);
  v8::Handle<v8::FunctionTemplate> fun2 =
      v8::FunctionTemplate::New(SignatureCallback, v8::Handle<Value>(), wsig);

  env->Global()->Set(v8_str("Cons1"), cons1->GetFunction());
  env->Global()->Set(v8_str("Cons2"), cons2->GetFunction());
  env->Global()->Set(v8_str("Cons3"), cons3->GetFunction());
  env->Global()->Set(v8_str("Fun2"), fun2->GetFunction());
  v8::Handle<Value> value4 = CompileRun(
      "Fun2(new Cons1(), new Cons2(), new Cons3()) =="
      "'[object Cons1],[object Cons2],[object Cons3]'");
  ASSERT(value4->IsTrue());

  v8::Handle<Value> value5 = CompileRun(
      "Fun2(new Cons1(), new Cons2(), 5) == '[object Cons1],[object Cons2],'");
  ASSERT(value5->IsTrue());

  v8::Handle<Value> value6 = CompileRun(
      "Fun2(new Cons3(), new Cons2(), new Cons1()) == ',[object Cons2],'");
  ASSERT(value6->IsTrue());

  v8::Handle<Value> value7 = CompileRun(
      "Fun2(new Cons1(), new Cons2(), new Cons3(), 'd') == "
      "'[object Cons1],[object Cons2],[object Cons3],d';");
  ASSERT(value7->IsTrue());

  v8::Handle<Value> value8 = CompileRun(
      "Fun2(new Cons1(), new Cons2()) == '[object Cons1],[object Cons2]'");
  ASSERT(value8->IsTrue());
}


THREADED_TEST(HulIgennem) {
  v8::HandleScope scope;
  LocalContext env;
  v8::Handle<v8::Primitive> undef = v8::Undefined();
  Local<String> undef_str = undef->ToString();
  char* value = i::NewArray<char>(undef_str->Length() + 1);
  undef_str->WriteAscii(value);
  CHECK_EQ(0, strcmp(value, "undefined"));
  i::DeleteArray(value);
}


THREADED_TEST(Access) {
  v8::HandleScope scope;
  LocalContext env;
  Local<v8::Object> obj = v8::Object::New();
  Local<Value> foo_before = obj->Get(v8_str("foo"));
  CHECK(foo_before->IsUndefined());
  Local<String> bar_str = v8_str("bar");
  obj->Set(v8_str("foo"), bar_str);
  Local<Value> foo_after = obj->Get(v8_str("foo"));
  CHECK(!foo_after->IsUndefined());
  CHECK(foo_after->IsString());
  CHECK_EQ(bar_str, foo_after);
}


THREADED_TEST(Script) {
  v8::HandleScope scope;
  LocalContext env;
  const char* c_source = "1 + 2 + 3";
  Local<String> source = String::New(c_source);
  Local<Script> script = Script::Compile(source);
  CHECK_EQ(6, script->Run()->Int32Value());
}


static uint16_t* AsciiToTwoByteString(const char* source) {
  size_t array_length = strlen(source) + 1;
  uint16_t* converted = i::NewArray<uint16_t>(array_length);
  for (size_t i = 0; i < array_length; i++) converted[i] = source[i];
  return converted;
}


class TestResource: public String::ExternalStringResource {
 public:
  static int dispose_count;

  explicit TestResource(uint16_t* data)
      : data_(data), length_(0) {
    while (data[length_]) ++length_;
  }

  ~TestResource() {
    i::DeleteArray(data_);
    ++dispose_count;
  }

  const uint16_t* data() const {
    return data_;
  }