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Welcome to another important module in this course, testing react apps. Now with testing here,

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I don't mean us manually clicking around in our application,

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we already do that constantly while developing it. With testing here,

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I mean writing automated tests and now here is something important which I want to mention right at

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the start of this module, testing is a complex topic and is actually a huge enough topic to make up an

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entire course just on its own.

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This is not a testing in general introduction and it's also not a complete react testing guidelike

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module.

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Instead I will introduce you into writing unit tests for react applications built with create react

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app and that can then be something you build up on or which helps you apply your general javascript

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testing knowledge you already have or gathering other resources.

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With that out of the way, let's dive into what testing exactly is in the next lecture and then learn

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how we can write tests for our react application.