Design Pattern – Template Method

In this time, I will explain about one of design pattern that you can apply when developing a software. Yep, the pattern is called by Template Method. I also applied Template Method pattern when developing our project. In a simple explanation, Template Method is a pattern where there’s an abstract class that contains template(s) to execute its methods then its subclasses can override the method implementation as what’s needed.

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Golden Way to Traverse React Components on Shallow Rendering Approach

On my last post, I’ve talked about shallow rendering to test React components. This post is the sequel of that post since I’ll also talk about testing React components. The shallow rendering that I’ve done on the last post is using the help from createRenderer function from React Addons Test Utils. Unfortunately, (until now) there are no function for traversing React element trees neatly just by using the help from React Addons Test Utils. If you want to check an element somewhere deep in the component tree, you will end up in a long chaining of props.children.props.children… which it also happened to me and I think it’s not elegant.

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Shallow Rendering to Test React Components

There are several approaches to test React components. The first approach that I tried was render the real DOM on the virtual environment. I used TestUtils.renderIntoDocument to render component into a real DOM. For the first time, I didn’t get any problem until I used Chart.js using this React wrapper for displaying chart. I faced a new problem!

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