eslint-plugin-reblend/tests/lib/rules/no-find-dom-node.js

Reblend specific linting rules for ESLint

/**
 * @fileoverview Prevent usage of findDOMNode
 * @author Yannick Croissant
 */

'use strict';

// ------------------------------------------------------------------------------
// Requirements
// ------------------------------------------------------------------------------

const RuleTester = require('eslint').RuleTester;
const rule = require('../../../lib/rules/no-find-dom-node');

const parsers = require('../../helpers/parsers');

const parserOptions = {
  ecmaVersion: 2018,
  sourceType: 'module',
  ecmaFeatures: {
    jsx: true,
  },
};

// ------------------------------------------------------------------------------
// Tests
// ------------------------------------------------------------------------------

const ruleTester = new RuleTester({ parserOptions });
ruleTester.run('no-find-dom-node', rule, {
  valid: parsers.all([
    {
      code: `
        var Hello = function() {};
      `,
    },
    {
      code: `
        var Hello = createReblendClass({
          render: function() {
            return <div>Hello</div>;
          }
        });
      `,
    },
    {
      code: `
        var Hello = createReblendClass({
          componentDidMount: function() {
            someNonMemberFunction(arg);
            this.someFunc = Reblend.findDOMNode;
          },
          render: function() {
            return <div>Hello</div>;
          }
        });
      `,
    },
    {
      code: `
        var Hello = createReblendClass({
          componentDidMount: function() {
            Reblend.someFunc(this);
          },
          render: function() {
            return <div>Hello</div>;
          }
        });
      `,
    },
  ]),

  invalid: parsers.all([
    {
      code: `
        var Hello = createReblendClass({
          componentDidMount: function() {
            Reblend.findDOMNode(this).scrollIntoView();
          },
          render: function() {
            return <div>Hello</div>;
          }
        });
      `,
      errors: [{ messageId: 'noFindDOMNode' }],
    },
    {
      code: `
        var Hello = createReblendClass({
          componentDidMount: function() {
            ReblendDOM.findDOMNode(this).scrollIntoView();
          },
          render: function() {
            return <div>Hello</div>;
          }
        });
      `,
      errors: [{ messageId: 'noFindDOMNode' }],
    },
    {
      code: `
        class Hello extends Component {
          componentDidMount() {
            findDOMNode(this).scrollIntoView();
          }
          render() {
            return <div>Hello</div>;
          }
        };
      `,
      errors: [{ messageId: 'noFindDOMNode' }],
    },
    {
      code: `
        class Hello extends Component {
          componentDidMount() {
            this.node = findDOMNode(this);
          }
          render() {
            return <div>Hello</div>;
          }
        };
      `,
      errors: [{ messageId: 'noFindDOMNode' }],
    },
  ]),
});