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@vue/test-utils

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@vue/test-utils

Component testing utils for Vue 3.

  • 2.4.6
  • latest
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  • npm
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Weekly downloads
1.9M
decreased by-5.04%
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5
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What is @vue/test-utils?

@vue/test-utils is the official unit testing utility library for Vue.js. It provides methods to mount and interact with Vue components in an isolated manner, allowing developers to write unit tests for their Vue components effectively.

What are @vue/test-utils's main functionalities?

Mounting Components

Mounting components allows you to render a Vue component in a test environment and returns a wrapper that contains the mounted component and methods to interact with it.

import { mount } from '@vue/test-utils';
import MyComponent from './MyComponent.vue';

const wrapper = mount(MyComponent);

Finding Elements

Finding elements within the mounted component using CSS selectors, Vue component options, or ref attributes, which can then be used to test the component's behavior.

const button = wrapper.find('button');

Simulating User Interaction

Simulating user interactions such as clicks, typing, or other events on the mounted component to test how it responds to user input.

button.trigger('click');

Accessing Component Data and Methods

Accessing the Vue instance's data, computed properties, and methods to assert their values and behavior within the test.

const vm = wrapper.vm;
console.log(vm.someData);

Stubbing Child Components

Stubbing child components to prevent their actual implementation from being rendered, which can simplify tests and improve test performance.

const wrapper = mount(MyComponent, {
  stubs: {
    ChildComponent: true
  }
});

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Package last updated on 07 May 2024

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