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jsx-uses-react.js
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jsx-uses-react.js
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/**
* @fileoverview Tests for jsx-uses-react
* @author Glen Mailer
*/
'use strict';
// -----------------------------------------------------------------------------
// Requirements
// -----------------------------------------------------------------------------
const eslint = require('eslint');
const rule = require('../../helpers/getESLintCoreRule')('no-unused-vars');
const RuleTester = eslint.RuleTester;
const parsers = require('../../helpers/parsers');
const parserOptions = {
ecmaVersion: 2018,
sourceType: 'module',
ecmaFeatures: {
jsx: true,
},
};
const settings = {
react: {
pragma: 'Foo',
},
};
// -----------------------------------------------------------------------------
// Tests
// -----------------------------------------------------------------------------
const ruleTester = new RuleTester({ parserOptions });
const linter = ruleTester.linter || eslint.linter || eslint.Linter;
linter.defineRule('jsx-uses-react', require('../../../lib/rules/jsx-uses-react'));
ruleTester.run('no-unused-vars', rule, {
valid: parsers.all([
{ code: '/*eslint jsx-uses-react:1*/ var React; <div />;' },
{ code: '/*eslint jsx-uses-react:1*/ var React; (function () { <div /> })();' },
{ code: '/*eslint jsx-uses-react:1*/ /** @jsx Foo */ var Foo; <div />;' },
{
code: '/*eslint jsx-uses-react:1*/ var Foo; <div />;',
settings,
},
{
code: '/*eslint jsx-uses-react:1*/ var Frag; <></>;',
settings: { react: { fragment: 'Frag' } },
features: ['fragment'],
},
{
code: '/*eslint jsx-uses-react:1*/ var React; <></>;',
features: ['fragment', 'no-ts-old'], // TODO: FIXME: fix for typescript-eslint
},
]),
invalid: parsers.all([
{
code: '/*eslint jsx-uses-react:1*/ var React;',
errors: [{ message: '\'React\' is defined but never used.' }],
},
{
code: '/*eslint jsx-uses-react:1*/ /** @jsx Foo */ var React; <div />;',
errors: [{ message: '\'React\' is defined but never used.' }],
},
{
code: '/*eslint jsx-uses-react:1*/ var React; <div />;',
errors: [{ message: '\'React\' is defined but never used.' }],
settings,
},
{
code: '/*eslint jsx-uses-react:1*/ var Frag; <></>;',
errors: [{ message: '\'Frag\' is defined but never used.' }],
features: ['fragment'],
settings: { react: { fragment: 'Fragment' } },
},
{
code: '/*eslint jsx-uses-react:1*/ var React; <></>;',
features: ['fragment'],
errors: [{ message: '\'React\' is defined but never used.' }],
settings,
},
]),
});