Add extras test for calling into runtime.

test/cctest/test-api.cc

 // Copyright 2012 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
@@ skipping 21427 matching lines @@
   }
   obj->ForceSet(v8_str("foo"), v8_num(1), v8::None);
   obj->ForceSet(v8_str("2"), v8_num(1), v8::None);
   CHECK(obj->HasOwnProperty(v8_str("foo")));
   CHECK(obj->HasOwnProperty(v8_str("2")));
   CHECK(!obj->Delete(v8_str("foo")));
   CHECK(!obj->Delete(2));
 }
 
 
+static void ExtrasExportsTestRuntimeFunction(
+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  CHECK_EQ(3, args[0]->Int32Value());
+  args.GetReturnValue().Set(v8_num(7));
+}
+
+
 TEST(ExtrasExportsObject) {
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope handle_scope(isolate);
   LocalContext env;
 
   // standalone.gypi ensures we include the test-extra.js file, which should
-  // add the testExtraShouldReturnFive export
+  // export the tested functions.
   v8::Local<v8::Object> exports = env->GetExtrasExportsObject();
 
   auto func =
       exports->Get(v8_str("testExtraShouldReturnFive")).As<v8::Function>();
   auto undefined = v8::Undefined(isolate);
   auto result = func->Call(undefined, 0, {}).As<v8::Number>();
+  CHECK_EQ(5, result->Int32Value());
 
-  CHECK(result->Value() == 5.0);
+  v8::Handle<v8::FunctionTemplate> runtimeFunction =
+      v8::FunctionTemplate::New(isolate, ExtrasExportsTestRuntimeFunction);
+  exports->Set(v8_str("runtime"), runtimeFunction->GetFunction());
+  func =
+      exports->Get(v8_str("testExtraShouldCallToRuntime")).As<v8::Function>();
+  result = func->Call(undefined, 0, {}).As<v8::Number>();
+  CHECK_EQ(7, result->Int32Value());
 }
 
 
 TEST(Map) {
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope handle_scope(isolate);
   LocalContext env;
 
   v8::Local<v8::Map> map = v8::Map::New(isolate);
   CHECK(map->IsObject());
@@ skipping 39 matching lines @@
   CHECK_EQ(2U, set->Size());
 
   v8::Local<v8::Array> keys = set->AsArray();
   CHECK_EQ(2U, keys->Length());
   CHECK_EQ(1, keys->Get(0).As<v8::Int32>()->Value());
   CHECK_EQ(2, keys->Get(1).As<v8::Int32>()->Value());
 
   set = v8::Set::FromArray(env.local(), keys).ToLocalChecked();
   CHECK_EQ(2U, set->Size());
 }