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Shallow Renderer

Shallow Renderer

Importing

import ShallowRenderer from 'react-test-renderer/shallow'; // ES6
var ShallowRenderer = require('react-test-renderer/shallow'); // ES5 with npm

Overview

When writing unit tests for React, shallow rendering can be helpful. Shallow rendering lets you render a component "one level deep" and assert facts about what its render method returns, without worrying about the behavior of child components, which are not instantiated or rendered. This does not require a DOM.

For example, if you have the following component:

function MyComponent() {
  return (
    <div>
      <span className="heading">Title</span>
      <Subcomponent foo="bar" />
    </div>
  );
}

Then you can assert:

import ShallowRendere