Add copy command after build for interup with surge.sh

Author: nhunzaker

fixtures/dom/package.json

@@ -16,7 +16,7 @@
   "scripts": {
     "start": "react-scripts start",
     "prestart": "cp ../../build/dist/{react,react-dom}.development.js public/",
-    "build": "react-scripts build",
+    "build": "react-scripts build && cp build/index.html build/200.html",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject"
   }

src/renderers/dom/shared/wrappers/__tests__/ReactDOMInput-test.js

@@ -465,10 +465,10 @@ describe('ReactDOMInput', () => {
     });
 
     ReactDOM.render(<input value="a" />, container);
-    expect(nodeValueSetter.mock.calls.length).toBe(1);
+    expect(nodeValueSetter.mock.calls.length).toBe(0);
 
     ReactDOM.render(<input value="b" />, container);
-    expect(nodeValueSetter.mock.calls.length).toBe(2);
+    expect(nodeValueSetter.mock.calls.length).toBe(1);
   });
 
   it('should properly control a value of number `0`', () => {