From 03bf17898a8a084484ca841d699c2a2878b62925 Mon Sep 17 00:00:00 2001
From: David Aurelio <davidaurelio@fb.com>
Date: Thu, 9 May 2019 04:14:08 -0700
Subject: [PATCH] Add test utilities for C++ and Java

Summary:
@public

Test utility on top of the new event system that maintains a counter of instantiated nodes. Meant to replace the global node counter.

Reviewed By: SidharthGuglani

Differential Revision: D15174855

fbshipit-source-id: 6998472f95a09b8da652257a26596164bdcf43d6
---
 ReactCommon/yoga/yoga/events.cpp | 4 ++++
 ReactCommon/yoga/yoga/events.h   | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/ReactCommon/yoga/yoga/events.cpp b/ReactCommon/yoga/yoga/events.cpp
index 2548204a7..41528e9c9 100644
--- a/ReactCommon/yoga/yoga/events.cpp
+++ b/ReactCommon/yoga/yoga/events.cpp
@@ -24,6 +24,10 @@ std::function<Event::Subscriber>& globalEventSubscriber() {
 
 } // namespace
 
+void Event::reset() {
+  globalEventSubscriber() = nullptr;
+}
+
 void Event::subscribe(std::function<Subscriber>&& subscriber) {
   if (globalEventSubscriber() != nullptr) {
     throw std::logic_error(
diff --git a/ReactCommon/yoga/yoga/events.h b/ReactCommon/yoga/yoga/events.h
index bd8cdd4b7..7b04060a8 100644
--- a/ReactCommon/yoga/yoga/events.h
+++ b/ReactCommon/yoga/yoga/events.h
@@ -35,6 +35,8 @@ struct Event {
     };
   };
 
+  static void reset();
+
   static void subscribe(std::function<Subscriber>&& subscriber);
 
   template <Type E>