From 0a53c41a2245d9059be0f3fc0ea5b4ac8737d04b Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Wed, 29 Nov 2017 14:19:33 +0000
Subject: [PATCH] Try to fix AppVeyor (#11702)

---
 packages/react/src/__tests__/ReactClassEquivalence-test.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/react/src/__tests__/ReactClassEquivalence-test.js b/packages/react/src/__tests__/ReactClassEquivalence-test.js
index 81fd3c6bebe23b..2b55116e929ddc 100644
--- a/packages/react/src/__tests__/ReactClassEquivalence-test.js
+++ b/packages/react/src/__tests__/ReactClassEquivalence-test.js
@@ -27,7 +27,8 @@ describe('ReactClassEquivalence', () => {
 
 function runJest(testFile) {
   var cwd = process.cwd();
-  var result = spawnSync('yarn', ['test', testFile], {
+  var extension = process.platform === 'win32' ? '.cmd' : '';
+  var result = spawnSync('yarn' + extension, ['test', testFile], {
     cwd,
     env: Object.assign({}, process.env, {
       REACT_CLASS_EQUIVALENCE_TEST: 'true',