eslint-config-chain-able/node_modules/eslint-plugin-no-for-each/tests/lib/rules/no-for-each.js

an opinionated ESLint configuration

var rule = require('../../../lib/rules/no-for-each')
var RuleTester = require('eslint').RuleTester

var eslintTester = new RuleTester()
eslintTester.run('no-for-each', rule, {
  valid: [
    'var eh = []; for (var i = 0; i < eh.length; i++) { console.log(eh[i]) } ',
  ],
  invalid: [
    // {
    //   code: 'var eh = ["test-array"].forEach(function(){});',
    //   errors: [{
    //     message: 'no for each loop',
    //   }]
    // },

    {
      code: 'variables.forEach (function(variable) {console.log(variable)})',
      errors: [{message: 'no for each loop'}],
    },
    {
      code: 'variables.forEach (function(variable) \n {\nconsole.log(variable)\n})',
      errors: [{message: 'no for each loop'}],
    },
    {
      code: 'variable.forEach(function() {})',
      errors: [{message: 'no for each loop'}],
    },
    {
      code: 'variable.forEach(function () {})',
      errors: [{
        message: 'no for each loop',
      }],
    },
    {
      code: 'variable.forEach(function(param) {console.log(param)})',
      errors: [{
        message: 'no for each loop',
      }],
    },
    {
      code: 'variable.forEach(function(param) {console.log(param)})',
      errors: [{
        message: 'no for each loop',
      }],
    },
    {
      code: '["test-array"].forEach(function(el, index){console.log(el)});',
      errors: [{
        message: 'no for each loop',
      }],
    },
    // replacement test
    {
      code: 'var something = "eh"; var eh = ["test-array"]; \n eh.forEach(function(el, index){console.log(el)});',
      errors: [{
        message: 'no for each loop',
      }],
    },
    // making sure all instances are replaced
    {
      code: 'var eh = ["test-array"]; \n eh.forEach(function(value, index) { \n console.log(value); \n console.log(value); \n })',
      parser: 'babel-eslint',
      errors: [{message: 'no for each loop'}],
    },

    {
      code: 'var canadians = ["north of the wall"]; canadians.forEach(function(canadian, index) { console.log(canadian, index) })',
      errors: [{
        message: 'no for each loop',
      }],
    },


    {
      code: `paths.forEach( function (path) { \n let pathArray = path.split('.'); \n let val = pathArray[i]; \n if (val === undefined) throw new Error(path); \n picked = someFn(pathArray, val); \n})`,
      parser: 'babel-eslint',
      errors: [{
        message: 'no for each loop',
      }],
    },

    {
      code: `namesWithParser.forEach( (name) => {
        let {destructuring, two} = objectVariable
        if (destructuring) console.log(name)
        if (two) console.log(name)
        return {two, name}
      })`,
      parser: 'babel-eslint',
      errors: [{
        message: 'no for each loop',
      }],
    },



    // @TODO: is not able to parse this in tests, but able to in client
    // {
    //   code: 'Object.keys(types).forEach(type => delete types[type])',
    //   errors: [{
    //     message: 'no for each loop',
    //   }]
    // },

  ],
})