Add a simple production-mode sanity check test

src/renderers/dom/__tests__/ReactDOMProduction-test.js

@@ -0,0 +1,90 @@
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @emails react-core
+ */
+
+'use strict';
+
+describe('ReactDOMProduction', function() {
+  var oldProcess;
+
+  var React;
+  var ReactDOM;
+
+  beforeEach(function() {
+    __DEV__ = true;
+    oldProcess = process;
+    global.process = {env: {NODE_ENV: 'production'}};
+
+    require('mock-modules').dumpCache();
+    React = require('React');
+    ReactDOM = require('ReactDOM');
+  });
+
+  afterEach(function() {
+    __DEV__ = false;
+    global.process = oldProcess;
+  });
+
+  it('should use prod fbjs', function() {
+    var warning = require('warning');
+
+    spyOn(console, 'error');
+    warning(false, 'Do cows go moo?');
+    expect(console.error.argsForCall.length).toBe(0);
+  });
+
+  it('should use prod React', function() {
+    spyOn(console, 'error');
+
+    // no key warning
+    void <div>{[<span />]}</div>;
+
+    expect(console.error.argsForCall.length).toBe(0);
+  });
+
+  it('should handle a simple flow', function() {
+    var Component = React.createClass({
+      render: function() {
+        return <span>{this.props.children}</span>;
+      },
+    });
+
+    var container = document.createElement('div');
+    var inst = ReactDOM.render(
+      <div className="blue">
+        <Component key={1}>A</Component>
+        <Component key={2}>B</Component>
+        <Component key={3}>C</Component>
+      </div>,
+      container
+    );
+
+    expect(container.firstChild).toBe(inst);
+    expect(inst.className).toBe('blue');
+    expect(inst.textContent).toBe('ABC');
+
+    ReactDOM.render(
+      <div className="red">
+        <Component key={2}>B</Component>
+        <Component key={1}>A</Component>
+        <Component key={3}>C</Component>
+      </div>,
+      container
+    );
+
+    expect(inst.className).toBe('red');
+    expect(inst.textContent).toBe('BAC');
+
+    ReactDOM.unmountComponentAtNode(container);
+
+    expect(container.childNodes.length).toBe(0);
+  });
+
+});