Add GetIdentityHash to v8::Name object API

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 0920178785e1664112f32c7c375c8c306ba7df64..716f5cbaf6cc2c1fb4c926b935d9b44ff2f8a25b 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -3033,6 +3033,40 @@ THREADED_TEST(GlobalProxyIdentityHash) {
 }
 
 
+TEST(SymbolIdentityHash) {
+  LocalContext env;
+  v8::Isolate* isolate = env->GetIsolate();
+  v8::HandleScope scope(isolate);
+
+  Local<v8::Symbol> symbol = v8::Symbol::New(isolate);
+  int hash = symbol->GetIdentityHash();
+  int hash1 = symbol->GetIdentityHash();
+  CHECK_EQ(hash, hash1);
+  CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);
+  int hash3 = symbol->GetIdentityHash();
+  CHECK_EQ(hash, hash3);

[aandrey, 2014/12/01 15:49:17]

can you also test symbols from JS:

v8::Handle<Value> js_symbol = CompileRun("Symbol('foo')");

[yurys, 2014/12/02 08:42:30]

Done.

+}
+
+
+TEST(StringIdentityHash) {
+  LocalContext env;
+  v8::Isolate* isolate = env->GetIsolate();
+  v8::HandleScope scope(isolate);
+
+  Local<v8::String> str = v8::String::NewFromUtf8(isolate, "str1");
+  int hash = str->GetIdentityHash();
+  int hash1 = str->GetIdentityHash();
+  CHECK_EQ(hash, hash1);
+  CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);
+  int hash3 = str->GetIdentityHash();
+  CHECK_EQ(hash, hash3);
+
+  Local<v8::String> str2 = v8::String::NewFromUtf8(isolate, "str1");
+  int hash4 = str2->GetIdentityHash();
+  CHECK_EQ(hash, hash4);
+}
+
+
 THREADED_TEST(SymbolProperties) {
   LocalContext env;
   v8::Isolate* isolate = env->GetIsolate();