Gain insights into testing Vue.js applications using Jest. Delve into creating unit tests and build intricate tests for Vue components to ensure your app functions flawlessly.

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Front-end frameworks, in general, are exploding in popularity, and Vue.js, in particular, has become one of the most popular ones.

As front-end frameworks continue to grow in usage, the ability to incorporate testing has become an essential feature. It's simply the only scalable way to ensure your app is functioning as expected.

You can learn to test your Vue.js applications thoroughly using Jest with this interactive course.

You'll start by learning the simplest unit tests in Jest, and will gradually build up to more intricate tests of different Vue components. To give you practical front-end testing experience, you'll be running your tests on a predefined data rendering Vue.js application.

This course is essential for anyone looking to create robust and effective front-end tests for their Vue apps.

Testing Vue.js Components with Jest

# The `slots` Property of the `options` Object

Vue components have two instance variables useful for accessing slots:

>- **`$children`**: an array of Vue component instances of the default slot.
>
>- **`$slots`**: an object of VNodes mapping all the slots defined in the component instance.

The `$slots` object has more data available. In fact, `$children` is just a portion of the `$slots` variable that could be accessed the same way by mapping over the `$slots.default` array and filtering by Vue component instances:

# The `slots` Property of the `options` Object

Vue components have two instance variables useful for accessing slots:

>- **`＄children`**: an array of Vue component instances of the default slot.
>
>- **`＄slots`**: an object of VNodes mapping all the slots defined in the component instance.

The `＄slots` object has more data available. In fact, `＄children` is just a portion of the `＄slots` variable that could be accessed the same way by mapping over the `＄slots.default` array and filtering by Vue component instances:

In this lesson, we will learn about $children and $slots.

First Vue.js Component Unit Test

Testing Deeply Rendered Vue.js Components

Testing Styles and Structure

Testing Properties and Custom Events

Testing Computed Properties and Watchers

Testing Methods and Mock Dependencies

Testing Vue.js Slots

Enhance Jest configuration with Module Aliases

Snapshot Testing

Local Installation Guide

$children and $slots

The `slots`