eslint/tests/lib/rules/no-global-assign.js

   1 /**
   2  * @fileoverview Tests for no-global-assign rule.
   3  * @author Ilya Volodin
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const rule = require("../../../lib/rules/no-global-assign"),
  13     { RuleTester } = require("../../../lib/rule-tester");
  14
  15 //------------------------------------------------------------------------------
  16 // Tests
  17 //------------------------------------------------------------------------------
  18
  19 const ruleTester = new RuleTester();
  20
  21 ruleTester.run("no-global-assign", rule, {
  22     valid: [
  23         "string = 'hello world';",
  24         "var string;",
  25         { code: "Object = 0;", options: [{ exceptions: ["Object"] }] },
  26         "top = 0;",
  27         { code: "onload = 0;", env: { browser: true } },
  28         "require = 0;",
  29         { code: "a = 1", globals: { a: true } },
  30         "/*global a:true*/ a = 1"
  31     ],
  32     invalid: [
  33         {
  34             code: "String = 'hello world';",
  35             errors: [{
  36                 messageId: "globalShouldNotBeModified",
  37                 data: { name: "String" },
  38                 type: "Identifier"
  39             }]
  40         },
  41         {
  42             code: "String++;",
  43             errors: [{
  44                 messageId: "globalShouldNotBeModified",
  45                 data: { name: "String" },
  46                 type: "Identifier"
  47             }]
  48         },
  49         {
  50             code: "({Object = 0, String = 0} = {});",
  51             parserOptions: { ecmaVersion: 6 },
  52             errors: [
  53                 {
  54                     messageId: "globalShouldNotBeModified",
  55                     data: { name: "Object" },
  56                     type: "Identifier"
  57                 },
  58                 {
  59                     messageId: "globalShouldNotBeModified",
  60                     data: { name: "String" },
  61                     type: "Identifier"
  62                 }
  63             ]
  64         },
  65         {
  66             code: "top = 0;",
  67             env: { browser: true },
  68             errors: [{
  69                 messageId: "globalShouldNotBeModified",
  70                 data: { name: "top" },
  71                 type: "Identifier"
  72             }]
  73         },
  74         {
  75             code: "require = 0;",
  76             env: { node: true },
  77             errors: [{
  78                 messageId: "globalShouldNotBeModified",
  79                 data: { name: "require" },
  80                 type: "Identifier"
  81             }]
  82         },
  83
  84         // Notifications of readonly are moved from no-undef: https://github.com/eslint/eslint/issues/4504
  85         {
  86             code: "/*global b:false*/ function f() { b = 1; }",
  87             errors: [{
  88                 messageId: "globalShouldNotBeModified",
  89                 data: { name: "b" },
  90                 type: "Identifier"
  91             }]
  92         },
  93         {
  94             code: "function f() { b = 1; }",
  95             globals: { b: false },
  96             errors: [{
  97                 messageId: "globalShouldNotBeModified",
  98                 data: { name: "b" },
  99                 type: "Identifier"
 100             }]
 101         },
 102         {
 103             code: "/*global b:false*/ function f() { b++; }",
 104             errors: [{
 105                 messageId: "globalShouldNotBeModified",
 106                 data: { name: "b" },
 107                 type: "Identifier"
 108             }]
 109         },
 110         {
 111             code: "/*global b*/ b = 1;",
 112             errors: [{
 113                 messageId: "globalShouldNotBeModified",
 114                 data: { name: "b" },
 115                 type: "Identifier"
 116             }]
 117         },
 118         {
 119             code: "Array = 1;",
 120             errors: [{
 121                 messageId: "globalShouldNotBeModified",
 122                 data: { name: "Array" },
 123                 type: "Identifier"
 124             }]
 125         }
 126     ]
 127 });