jsx-props-no-spreading.js

/**
 * @fileoverview Tests for jsx-props-no-spreading
 */

'use strict';

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

const RuleTester = require('eslint').RuleTester;
const rule = require('../../../lib/rules/jsx-props-no-spreading');

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

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

const ruleTester = new RuleTester({parserOptions});
const expectedError = {message: 'Prop spreading is forbidden'};

ruleTester.run('jsx-props-no-spreading', rule, {
  valid: [{
    code: [
      'const {one_prop, two_prop} = props;',
      '<App one_prop={one_prop} two_prop={two_prop}/>'
    ].join('\n')
  }, {
    code: [
      'const {one_prop, two_prop} = props;',
      '<div one_prop={one_prop} two_prop={two_prop}></div>'
    ].join('\n')
  }, {
    code: [
      'const newProps = {...props};',
      '<App one_prop={newProps.one_prop} two_prop={newProps.two_prop} style={{...styles}}/>'
    ].join('\n')
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      '<App>',
      '   <Image {...props}/>',
      '   <img {...props}/>',
      '</App>'
    ].join('\n'),
    options: [{exceptions: ['Image', 'img']}]
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      'const { src, alt } = props;',
      '<App>',
      '   <Image {...props}/>',
      '   <img src={src} alt={alt}/>',
      '</App>'
    ].join('\n'),
    options: [{custom: 'ignore'}]
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      'const { src, alt } = props;',
      '<App>',
      '   <Image {...props}/>',
      '   <img {...props}/>',
      '</App>'
    ].join('\n'),
    options: [{custom: 'enforce', html: 'ignore', exceptions: ['Image']}]
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      'const { src, alt } = props;',
      '<App>',
      '   <img {...props}/>',
      '   <Image src={src} alt={alt}/>',
      '   <div {...someOtherProps}/>',
      '</App>'
    ].join('\n'),
    options: [{html: 'ignore'}]
  }, {
    code: `
      <App>
        <Foo {...{ prop1, prop2, prop3 }} />
      </App>
    `,
    options: [{explicitSpread: 'ignore'}]
  }],

  invalid: [{
    code: [
      '<App {...props}/>'
    ].join('\n'),
    errors: [expectedError]
  }, {
    code: [
      '<div {...props}></div>'
    ].join('\n'),
    errors: [expectedError]
  }, {
    code: [
      '<App {...props} some_other_prop={some_other_prop}/>'
    ].join('\n'),
    errors: [expectedError]
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      '<App>',
      '   <Image {...props}/>',
      '   <span {...props}/>',
      '</App>'
    ].join('\n'),
    options: [{exceptions: ['Image', 'img']}],
    errors: [expectedError]
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      'const { src, alt } = props;',
      '<App>',
      '   <Image {...props}/>',
      '   <img {...props}/>',
      '</App>'
    ].join('\n'),
    options: [{custom: 'ignore'}],
    errors: [expectedError]
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      'const { src, alt } = props;',
      '<App>',
      '   <Image {...props}/>',
      '   <img {...props}/>',
      '</App>'
    ].join('\n'),
    options: [{html: 'ignore', exceptions: ['Image', 'img']}],
    errors: [expectedError]
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      'const { src, alt } = props;',
      '<App>',
      '   <Image {...props}/>',
      '   <img {...props}/>',
      '   <div {...props}/>',
      '</App>'
    ].join('\n'),
    options: [{custom: 'ignore', html: 'ignore', exceptions: ['Image', 'img']}],
    errors: [expectedError, expectedError]
  }, {
    code: [
      'const props = {src: "dummy.jpg", alt: "dummy"};',
      'const { src, alt } = props;',
      '<App>',
      '   <img {...props}/>',
      '   <Image {...props}/>',
      '</App>'
    ].join('\n'),
    options: [{html: 'ignore'}],
    errors: [expectedError]
  }, {
    code: `
      <App>
        <Foo {...{ prop1, prop2, prop3 }} />
      </App>
    `,
    errors: [expectedError]
  }, {
    code: `
      <App>
        <Foo {...{ prop1, ...rest }} />
      </App>
    `,
    options: [{explicitSpread: 'ignore'}],
    errors: [expectedError]
  }, {
    code: `
      <App>
        <Foo {...{ ...props }} />
      </App>
    `,
    options: [{explicitSpread: 'ignore'}],
    errors: [expectedError]
  }, {
    code: `
      <App>
        <Foo {...props } />
      </App>
    `,
    options: [{explicitSpread: 'ignore'}],
    errors: [expectedError]
  }]
});