From b86ff4935babe6ce7f55f8e3a7c2cd894cbc2c3f Mon Sep 17 00:00:00 2001
From: Said Kholov <skholov2@gmail.com>
Date: Tue, 26 Feb 2019 11:01:44 +1300
Subject: [PATCH] add testing instructions

---
 README.md | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/README.md b/README.md
index e80385f..1de7b65 100644
--- a/README.md
+++ b/README.md
@@ -334,6 +334,32 @@ export default class AdComponent extends React.Component {
 }
 ```
 
+### Testing
+
+One way to test that events are being tracked is to pass a mocked `tracking` object into your component. Here is an example using Jest and Enzyme:
+
+```js
+import ComponentToTest from './ComponentToTest';
+import { shallow } from 'enzyme';
+
+const trackEvent = jest.fn();
+
+shallow(
+  <ComponentToTest
+    tracking={{
+      trackEvent
+    }}
+  />
+);
+
+test('tracking is called with arguments', () => {
+  expect(trackEvent).toHaveBeenCalledWith({
+    event: 'pageDataReady',
+    page: 'FooPage'
+  });
+});
+```
+
 ### Tracking Data
 
 Note that there are no restrictions on the objects that are passed in to the decorator.