From 5b93a2bdbec4878991d47ef7189032ac98bdbe33 Mon Sep 17 00:00:00 2001
From: Nuno Campos <nuno@crowdprocess.com>
Date: Fri, 13 May 2016 20:28:14 +0100
Subject: [PATCH] added tests for repeated calls to ReactPerf.start/stop

---
 src/isomorphic/__tests__/ReactPerf-test.js | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/isomorphic/__tests__/ReactPerf-test.js b/src/isomorphic/__tests__/ReactPerf-test.js
index fd72767274..0a24bb9919 100644
--- a/src/isomorphic/__tests__/ReactPerf-test.js
+++ b/src/isomorphic/__tests__/ReactPerf-test.js
@@ -293,4 +293,27 @@ describe('ReactPerf', function() {
     ReactPerf.stop();
     expect(ReactPerf.isRunning()).toBe(false);
   });
+
+  it('start has no effect when already running', () => {
+    expect(ReactPerf.isRunning()).toBe(false);
+
+    ReactPerf.start();
+    expect(ReactPerf.isRunning()).toBe(true);
+
+    ReactPerf.start();
+    expect(ReactPerf.isRunning()).toBe(true);
+
+    ReactPerf.stop();
+    expect(ReactPerf.isRunning()).toBe(false);
+  });
+
+  it('stop has no effect when already stopped', () => {
+    expect(ReactPerf.isRunning()).toBe(false);
+
+    ReactPerf.stop();
+    expect(ReactPerf.isRunning()).toBe(false);
+
+    ReactPerf.stop();
+    expect(ReactPerf.isRunning()).toBe(false);
+  });
 });