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Update Testing.md with pre-processing information 

With the added information a react-native developer will be able to run jest tests without errors.
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ericvera 2015-09-11 18:44:16 -07:00
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@ -25,6 +25,33 @@ npm test
from the react-native root, and we encourage you to add your own tests for any components you want to contribute to. See [`getImageSource-test.js`](https://github.com/facebook/react-native/blob/master/Examples/Movies/__tests__/getImageSource-test.js) for a basic example.
Note: In order to run your own tests, you will have to first follow the Getting Started instructions on the Jest page and then include the `jest` objects below in `package.json` so that the scripts are pre-processed before execution.
```
...
"scripts": {
...
"test": "jest"
},
...
"jest": {
"scriptPreprocessor": "node_modules/react-native/jestSupport/scriptPreprocess.js",
"setupEnvScriptFile": "node_modules/react-native/jestSupport/env.js",
"testPathIgnorePatterns": [
"/node_modules/",
"packager/react-packager/src/Activity/"
],
"testFileExtensions": [
"js"
],
"unmockedModulePathPatterns": [
"promise",
"source-map"
]
},
...
```
Note: you may have to install/upgrade/link io.js and other parts of your environment in order for the tests to run correctly. Check out the latest setup in [.travis.yml](https://github.com/facebook/react-native/blob/master/.travis.yml#L11-24)
## Integration Tests