eslint/tests/lib/rules/no-async-promise-executor.js

   1 /**
   2  * @fileoverview disallow using an async function as a Promise executor
   3  * @author Teddy Katz
   4  */
   5 "use strict";
   6
   7 //------------------------------------------------------------------------------
   8 // Requirements
   9 //------------------------------------------------------------------------------
  10
  11 const rule = require("../../../lib/rules/no-async-promise-executor");
  12 const { RuleTester } = require("../../../lib/rule-tester");
  13
  14
  15 //------------------------------------------------------------------------------
  16 // Tests
  17 //------------------------------------------------------------------------------
  18
  19 const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8 } });
  20
  21 ruleTester.run("no-async-promise-executor", rule, {
  22
  23     valid: [
  24         "new Promise((resolve, reject) => {})",
  25         "new Promise((resolve, reject) => {}, async function unrelated() {})",
  26         "new Foo(async (resolve, reject) => {})"
  27     ],
  28
  29     invalid: [
  30         {
  31             code: "new Promise(async function foo(resolve, reject) {})",
  32             errors: [{
  33                 messageId: "async",
  34                 line: 1,
  35                 column: 13,
  36                 endLine: 1,
  37                 endColumn: 18
  38             }]
  39         },
  40         {
  41             code: "new Promise(async (resolve, reject) => {})",
  42             errors: [{
  43                 messageId: "async",
  44                 line: 1,
  45                 column: 13,
  46                 endLine: 1,
  47                 endColumn: 18
  48             }]
  49         },
  50         {
  51             code: "new Promise(((((async () => {})))))",
  52             errors: [{
  53                 messageId: "async",
  54                 line: 1,
  55                 column: 17,
  56                 endLine: 1,
  57                 endColumn: 22
  58             }]
  59         }
  60     ]
  61 });