freeCodeCamp/curriculum/challenges/arabic/03-front-end-libraries/react/use-the-lifecycle-method-co...

73 lines
1.3 KiB
Markdown
Raw Normal View History

---
id: 5a24c314108439a4d403617c
title: Use the Lifecycle Method componentWillMount
challengeType: 6
isRequired: false
videoUrl: ''
localeTitle: ''
---
## Description
undefined
## Instructions
undefined
## Tests
<section id='tests'>
```yml
tests:
- text: ''
testString: 'assert((function() { const mockedComponent = Enzyme.mount(React.createElement(MyComponent)); return mockedComponent.find("div").length === 1; })(), "<code>MyComponent</code> should render a <code>div</code> element.");'
- text: ''
testString: 'assert((function() { const lifecycle = React.createElement(MyComponent).type.prototype.componentWillMount.toString().replace(/ /g,""); return lifecycle.includes("console.log("); })(), "<code>console.log</code> should be called in <code>componentWillMount</code>.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='jsx-seed'>
```jsx
class MyComponent extends React.Component {
constructor(props) {
super(props);
}
componentWillMount() {
// change code below this line
// change code above this line
}
render() {
return <div />
}
};
```
</div>
### After Test
<div id='jsx-teardown'>
```js
console.info('after the test');
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>