Moving the jest configuration from jest-react-native to react native.

Reviewed By: cpojer

Differential Revision: D3923609

fbshipit-source-id: 62804df81b064871b499ae8c091e13dd1e0f229b

jest/mockComponent.js

@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) 2013-present, 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.
+ */
+
+module.exports = moduleName => {
+  const RealComponent = require.requireActual(moduleName);
+  const React = require('react');
+
+  const Component = class extends RealComponent {
+    render() {
+      return React.createElement(
+        RealComponent.displayName || RealComponent.name,
+        this.props,
+        this.props.children,
+      );
+    }
+  };
+  return Component;
+};