test-api.cc

Google浏览器V8内核代码

  int32_t int32_value = obj->Int32Value();
  CHECK_EQ(0, int32_value);
  CheckUncle(&try_catch);

  uint32_t uint32_value = obj->Uint32Value();
  CHECK_EQ(0, uint32_value);
  CheckUncle(&try_catch);

  double number_value = obj->NumberValue();
  CHECK_NE(0, IsNaN(number_value));
  CheckUncle(&try_catch);

  int64_t integer_value = obj->IntegerValue();
  CHECK_EQ(0.0, static_cast<double>(integer_value));
  CheckUncle(&try_catch);
}


v8::Handle<Value> ThrowFromC(const v8::Arguments& args) {
  ApiTestFuzzer::Fuzz();
  return v8::ThrowException(v8_str("konto"));
}


THREADED_TEST(APICatch) {
  v8::HandleScope scope;
  Local<ObjectTemplate> templ = ObjectTemplate::New();
  templ->Set(v8_str("ThrowFromC"),
             v8::FunctionTemplate::New(ThrowFromC));
  LocalContext context(0, templ);
  CompileRun(
    "var thrown = false;"
    "try {"
    "  ThrowFromC();"
    "} catch (e) {"
    "  thrown = true;"
    "}");
  Local<Value> thrown = context->Global()->Get(v8_str("thrown"));
  CHECK(thrown->BooleanValue());
}


THREADED_TEST(ExternalScriptException) {
  v8::HandleScope scope;
  Local<ObjectTemplate> templ = ObjectTemplate::New();
  templ->Set(v8_str("ThrowFromC"),
             v8::FunctionTemplate::New(ThrowFromC));
  LocalContext context(0, templ);

  v8::TryCatch try_catch;
  Local<Script> script
      = Script::Compile(v8_str("ThrowFromC(); throw 'panama';"));
  Local<Value> result = script->Run();
  CHECK(result.IsEmpty());
  CHECK(try_catch.HasCaught());
  String::AsciiValue exception_value(try_catch.Exception());
  CHECK_EQ("konto", *exception_value);
}



v8::Handle<Value> CThrowCountDown(const v8::Arguments& args) {
  ApiTestFuzzer::Fuzz();
  CHECK_EQ(4, args.Length());
  int count = args[0]->Int32Value();
  int cInterval = args[2]->Int32Value();
  if (count == 0) {
    return v8::ThrowException(v8_str("FromC"));
  } else {
    Local<v8::Object> global = Context::GetCurrent()->Global();
    Local<Value> fun = global->Get(v8_str("JSThrowCountDown"));
    v8::Handle<Value> argv[] = { v8_num(count - 1),
                                 args[1],
                                 args[2],
                                 args[3] };
    if (count % cInterval == 0) {
      v8::TryCatch try_catch;
      Local<Value> result =
          v8::Handle<Function>::Cast(fun)->Call(global, 4, argv);
      int expected = args[3]->Int32Value();
      if (try_catch.HasCaught()) {
        CHECK_EQ(expected, count);
        CHECK(!i::Top::has_scheduled_exception());
      } else {
        CHECK_NE(expected, count);
      }
      return result;
    } else {
      return v8::Handle<Function>::Cast(fun)->Call(global, 4, argv);
    }
  }
}


v8::Handle<Value> JSCheck(const v8::Arguments& args) {
  ApiTestFuzzer::Fuzz();
  CHECK_EQ(3, args.Length());
  bool equality = args[0]->BooleanValue();
  int count = args[1]->Int32Value();
  int expected = args[2]->Int32Value();
  if (equality) {
    CHECK_EQ(count, expected);
  } else {
    CHECK_NE(count, expected);
  }
  return v8::Undefined();
}


// This test works by making a stack of alternating JavaScript and C
// activations.  These activations set up exception handlers with regular
// intervals, one interval for C activations and another for JavaScript
// activations.  When enough activations have been created an exception is
// thrown and we check that the right activation catches the exception and that
// no other activations do.  The right activation is always the topmost one with
// a handler, regardless of whether it is in JavaScript or C.
//
// The notation used to describe a test case looks like this:
//
//    *JS[4] *C[3] @JS[2] C[1] JS[0]
//
// Each entry is an activation, either JS or C.  The index is the count at that
// level.  Stars identify activations with exception handlers, the @ identifies
// the exception handler that should catch the exception.
THREADED_TEST(ExceptionOrder) {
  v8::HandleScope scope;
  Local<ObjectTemplate> templ = ObjectTemplate::New();
  templ->Set(v8_str("check"), v8::FunctionTemplate::New(JSCheck));
  templ->Set(v8_str("CThrowCountDown"),
             v8::FunctionTemplate::New(CThrowCountDown));
  LocalContext context(0, templ);
  CompileRun(
    "function JSThrowCountDown(count, jsInterval, cInterval, expected) {"
    "  if (count == 0) throw 'FromJS';"
    "  if (count % jsInterval == 0) {"
    "    try {"
    "      var value = CThrowCountDown(count - 1,"
    "                                  jsInterval,"
    "                                  cInterval,"
    "                                  expected);"
    "      check(false, count, expected);"
    "      return value;"
    "    } catch (e) {"
    "      check(true, count, expected);"
    "    }"
    "  } else {"
    "    return CThrowCountDown(count - 1, jsInterval, cInterval, expected);"
    "  }"
    "}");
  Local<Function> fun =
      Local<Function>::Cast(context->Global()->Get(v8_str("JSThrowCountDown")));

  const int argc = 4;
  //                             count      jsInterval cInterval  expected

  // *JS[4] *C[3] @JS[2] C[1] JS[0]
  v8::Handle<Value> a0[argc] = { v8_num(4), v8_num(2), v8_num(3), v8_num(2) };
  fun->Call(fun, argc, a0);

  // JS[5] *C[4] JS[3] @C[2] JS[1] C[0]
  v8::Handle<Value> a1[argc] = { v8_num(5), v8_num(6), v8_num(1), v8_num(2) };
  fun->Call(fun, argc, a1);

  // JS[6] @C[5] JS[4] C[3] JS[2] C[1] JS[0]
  v8::Handle<Value> a2[argc] = { v8_num(6), v8_num(7), v8_num(5), v8_num(5) };
  fun->Call(fun, argc, a2);

  // @JS[6] C[5] JS[4] C[3] JS[2] C[1] JS[0]
  v8::Handle<Value> a3[argc] = { v8_num(6), v8_num(6), v8_num(7), v8_num(6) };
  fun->Call(fun, argc, a3);

  // JS[6] *C[5] @JS[4] C[3] JS[2] C[1] JS[0]
  v8::Handle<Value> a4[argc] = { v8_num(6), v8_num(4), v8_num(5), v8_num(4) };
  fun->Call(fun, argc, a4);

  // JS[6] C[5] *JS[4] @C[3] JS[2] C[1] JS[0]
  v8::Handle<Value> a5[argc] = { v8_num(6), v8_num(4), v8_num(3), v8_num(3) };
  fun->Call(fun, argc, a5);
}


v8::Handle<Value> ThrowValue(const v8::Arguments& args) {
  ApiTestFuzzer::Fuzz();
  CHECK_EQ(1, args.Length());
  return v8::ThrowException(args[0]);
}


THREADED_TEST(ThrowValues) {
  v8::HandleScope scope;
  Local<ObjectTemplate> templ = ObjectTemplate::New();
  templ->Set(v8_str("Throw"), v8::FunctionTemplate::New(ThrowValue));
  LocalContext context(0, templ);
  v8::Handle<v8::Array> result = v8::Handle<v8::Array>::Cast(CompileRun(
    "function Run(obj) {"
    "  try {"
    "    Throw(obj);"
    "  } catch (e) {"
    "    return e;"
    "  }"
    "  return 'no exception';"
    "}"
    "[Run('str'), Run(1), Run(0), Run(null), Run(void 0)];"));
  CHECK_EQ(5, result->Length());
  CHECK(result->Get(v8::Integer::New(0))->IsString());
  CHECK(result->Get(v8::Integer::New(1))->IsNumber());
  CHECK_EQ(1, result->Get(v8::Integer::New(1))->Int32Value());
  CHECK(result->Get(v8::Integer::New(2))->IsNumber());
  CHECK_EQ(0, result->Get(v8::Integer::New(2))->Int32Value());
  CHECK(result->Get(v8::Integer::New(3))->IsNull());
  CHECK(result->Get(v8::Integer::New(4))->IsUndefined());
}


THREADED_TEST(CatchZero) {
  v8::HandleScope scope;
  LocalContext context;
  v8::TryCatch try_catch;
  CHECK(!try_catch.HasCaught());
  Script::Compile(v8_str("throw 10"))->Run();
  CHECK(try_catch.HasCaught());
  CHECK_EQ(10, try_catch.Exception()->Int32Value());
  try_catch.Reset();
  CHECK(!try_catch.HasCaught());
  Script::Compile(v8_str("throw 0"))->Run();
  CHECK(try_catch.HasCaught());
  CHECK_EQ(0, try_catch.Exception()->Int32Value());
}


THREADED_TEST(CatchExceptionFromWith) {
  v8::HandleScope scope;
  LocalContext context;
  v8::TryCatch try_catch;
  CHECK(!try_catch.HasCaught());
  Script::Compile(v8_str("var o = {}; with (o) { throw 42; }"))->Run();
  CHECK(try_catch.HasCaught());
}


THREADED_TEST(Equality) {
  v8::HandleScope scope;
  LocalContext context;
  // Check that equality works at all before relying on CHECK_EQ
  CHECK(v8_str("a")->Equals(v8_str("a")));
  CHECK(!v8_str("a")->Equals(v8_str("b")));

  CHECK_EQ(v8_str("a"), v8_str("a"));
  CHECK_NE(v8_str("a"), v8_str("b"));
  CHECK_EQ(v8_num(1), v8_num(1));
  CHECK_EQ(v8_num(1.00), v8_num(1));
  CHECK_NE(v8_num(1), v8_num(2));

  // Assume String is not symbol.
  CHECK(v8_str("a")->StrictEquals(v8_str("a")));
  CHECK(!v8_str("a")->StrictEquals(v8_str("b")));
  CHECK(!v8_str("5")->StrictEquals(v8_num(5)));
  CHECK(v8_num(1)->StrictEquals(v8_num(1)));
  CHECK(!v8_num(1)->StrictEquals(v8_num(2)));
  CHECK(v8_num(0)->StrictEquals(v8_num(-0)));
  Local<Value> not_a_number = v8_num(i::OS::nan_value());
  CHECK(!not_a_number->StrictEquals(not_a_number));
  CHECK(v8::False()->StrictEquals(v8::False()));
  CHECK(!v8::False()->StrictEquals(v8::Undefined()));

  v8::Handle<v8::Object> obj = v8::Object::New();
  v8::Persistent<v8::Object> alias = v8::Persistent<v8::Object>::New(obj);
  CHECK(alias->StrictEquals(obj));
  alias.Dispose();
}


THREADED_TEST(MultiRun) {
  v8::HandleScope scope;
  LocalContext context;
  Local<Script> script = Script::Compile(v8_str("x"));
  for (int i = 0; i < 10; i++)
    script->Run();
}


static v8::Handle<Value> GetXValue(Local<String> name,
                                   const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK_EQ(info.Data(), v8_str("donut"));
  CHECK_EQ(name, v8_str("x"));
  return name;
}


THREADED_TEST(SimplePropertyRead) {
  v8::HandleScope scope;
  Local<ObjectTemplate> templ = ObjectTemplate::New();
  templ->SetAccessor(v8_str("x"), GetXValue, NULL, v8_str("donut"));
  LocalContext context;
  context->Global()->Set(v8_str("obj"), templ->NewInstance());
  Local<Script> script = Script::Compile(v8_str("obj.x"));
  for (int i = 0; i < 10; i++) {
    Local<Value> result = script->Run();
    CHECK_EQ(result, v8_str("x"));
  }
}


v8::Persistent<Value> xValue;


static void SetXValue(Local<String> name,
                      Local<Value> value,
                      const AccessorInfo& info) {
  CHECK_EQ(value, v8_num(4));
  CHECK_EQ(info.Data(), v8_str("donut"));
  CHECK_EQ(name, v8_str("x"));
  CHECK(xValue.IsEmpty());
  xValue = v8::Persistent<Value>::New(value);
}


THREADED_TEST(SimplePropertyWrite) {
  v8::HandleScope scope;
  Local<ObjectTemplate> templ = ObjectTemplate::New();
  templ->SetAccessor(v8_str("x"), GetXValue, SetXValue, v8_str("donut"));
  LocalContext context;
  context->Global()->Set(v8_str("obj"), templ->NewInstance());
  Local<Script> script = Script::Compile(v8_str("obj.x = 4"));
  for (int i = 0; i < 10; i++) {
    CHECK(xValue.IsEmpty());
    script->Run();
    CHECK_EQ(v8_num(4), xValue);
    xValue.Dispose();
    xValue = v8::Persistent<Value>();
  }
}


static v8::Handle<Value> XPropertyGetter(Local<String> property,
                                         const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.Data()->IsUndefined());
  return property;
}


THREADED_TEST(NamedInterceporPropertyRead) {
  v8::HandleScope scope;
  Local<ObjectTemplate> templ = ObjectTemplate::New();
  templ->SetNamedPropertyHandler(XPropertyGetter);
  LocalContext context;
  context->Global()->Set(v8_str("obj"), templ->NewInstance());
  Local<Script> script = Script::Compile(v8_str("obj.x"));
  for (int i = 0; i < 10; i++) {
    Local<Value> result = script->Run();
    CHECK_EQ(result, v8_str("x"));
  }
}

THREADED_TEST(MultiContexts) {
  v8::HandleScope scope;
  v8::Handle<ObjectTemplate> templ = ObjectTemplate::New();
  templ->Set(v8_str("dummy"), v8::FunctionTemplate::New(DummyCallHandler));

  Local<String> password = v8_str("Password");

  // Create an environment
  LocalContext context0(0, templ);
  context0->SetSecurityToken(password);
  v8::Handle<v8::Object> global0 = context0->Global();
  global0->Set(v8_str("custom"), v8_num(1234));
  CHECK_EQ(1234, global0->Get(v8_str("custom"))->Int32Value());

  // Create an independent environment
  LocalContext context1(0, templ);
  context1->SetSecurityToken(password);
  v8::Handle<v8::Object> global1 = context1->Global();
  global1->Set(v8_str("custom"), v8_num(1234));
  CHECK_NE(global0, global1);
  CHECK_EQ(1234, global0->Get(v8_str("custom"))->Int32Value());
  CHECK_EQ(1234, global1->Get(v8_str("custom"))->Int32Value());

  // Now create a new context with the old global
  LocalContext context2(0, templ, global1);
  context2->SetSecurityToken(password);
  v8::Handle<v8::Object> global2 = context2->Global();
  CHECK_EQ(global1, global2);
  CHECK_EQ(0, global1->Get(v8_str("custom"))->Int32Value());
  CHECK_EQ(0, global2->Get(v8_str("custom"))->Int32Value());
}


THREADED_TEST(FunctionPrototypeAcrossContexts) {
  // Make sure that functions created by cloning boilerplates cannot
  // communicate through their __proto__ field.

  v8::HandleScope scope;

  LocalContext env0;
  v8::Handle<v8::Object> global0 =
      env0->Global();
  v8::Handle<v8::Object> object0 =