Expose JSON stringifier through V8 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 6bea3eaefee603ed7bc02a56be251082ba6ad27a..63932b0919de5d2e13224df4af3ab1a1fbd0f811 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -21947,6 +21947,15 @@ THREADED_TEST(Regress260106) {
   CHECK(function->IsFunction());
 }
 
+THREADED_TEST(JSONParseObjectWithContext) {
+  LocalContext context;
+  HandleScope scope(context->GetIsolate());
+  Local<Value> obj =
+      v8::JSON::Parse(context.local(), v8_str("{\"x\":42}")).ToLocalChecked();
+  Local<Object> global = context->Global();
+  global->Set(context.local(), v8_str("obj"), obj).FromJust();
+  ExpectString("JSON.stringify(obj)", "{\"x\":42}");
+}
 
 THREADED_TEST(JSONParseObject) {
   LocalContext context;
@@ -21970,6 +21979,20 @@ THREADED_TEST(JSONParseNumber) {
   ExpectString("JSON.stringify(obj)", "42");
 }
 
+THREADED_TEST(JSONStringifyObject) {
+  LocalContext context;
+  HandleScope scope(context->GetIsolate());
+  Local<Value> value =
+      v8::JSON::Parse(context->GetIsolate(), v8_str("{\"x\":42}"))
+          .ToLocalChecked();
+  Local<Object> obj = value->ToObject(context.local()).ToLocalChecked();
+  Local<Object> global = context->Global();
+  global->Set(context.local(), v8_str("obj"), obj).FromJust();
+  Local<String> json =
+      v8::JSON::Stringify(context->GetIsolate(), obj).ToLocalChecked();
+  v8::String::Utf8Value utf8(json);
+  ExpectString("JSON.stringify(obj)", *utf8);
+}
 
 #if V8_OS_POSIX && !V8_OS_NACL
 class ThreadInterruptTest {