eslint/tests/lib/rules/no-alert.js

   1 /**
   2  * @fileoverview Tests for no-alert rule.
   3  * @author Nicholas C. Zakas
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const rule = require("../../../lib/rules/no-alert"),
  13     { RuleTester } = require("../../../lib/rule-tester");
  14
  15 //------------------------------------------------------------------------------
  16 // Tests
  17 //------------------------------------------------------------------------------
  18
  19 const ruleTester = new RuleTester();
  20
  21 ruleTester.run("no-alert", rule, {
  22     valid: [
  23         "a[o.k](1)",
  24         "foo.alert(foo)",
  25         "foo.confirm(foo)",
  26         "foo.prompt(foo)",
  27         "function alert() {} alert();",
  28         "var alert = function() {}; alert();",
  29         "function foo() { var alert = bar; alert(); }",
  30         "function foo(alert) { alert(); }",
  31         "var alert = function() {}; function test() { alert(); }",
  32         "function foo() { var alert = function() {}; function test() { alert(); } }",
  33         "function confirm() {} confirm();",
  34         "function prompt() {} prompt();",
  35         "window[alert]();",
  36         "function foo() { this.alert(); }",
  37         "function foo() { var window = bar; window.alert(); }",
  38         "globalThis.alert();",
  39         { code: "globalThis['alert']();", env: { es6: true } },
  40         { code: "globalThis.alert();", env: { es2017: true } },
  41         { code: "var globalThis = foo; globalThis.alert();", env: { es2020: true } },
  42         { code: "function foo() { var globalThis = foo; globalThis.alert(); }", env: { es2020: true } }
  43     ],
  44     invalid: [
  45         {
  46             code: "alert(foo)",
  47             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 1 }]
  48         },
  49         {
  50             code: "window.alert(foo)",
  51             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 1 }]
  52         },
  53         {
  54             code: "window['alert'](foo)",
  55             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 1 }]
  56         },
  57         {
  58             code: "confirm(foo)",
  59             errors: [{ messageId: "unexpected", data: { name: "confirm" }, type: "CallExpression", line: 1, column: 1 }]
  60         },
  61         {
  62             code: "window.confirm(foo)",
  63             errors: [{ messageId: "unexpected", data: { name: "confirm" }, type: "CallExpression", line: 1, column: 1 }]
  64         },
  65         {
  66             code: "window['confirm'](foo)",
  67             errors: [{ messageId: "unexpected", data: { name: "confirm" }, type: "CallExpression", line: 1, column: 1 }]
  68         },
  69         {
  70             code: "prompt(foo)",
  71             errors: [{ messageId: "unexpected", data: { name: "prompt" }, type: "CallExpression", line: 1, column: 1 }]
  72         },
  73         {
  74             code: "window.prompt(foo)",
  75             errors: [{ messageId: "unexpected", data: { name: "prompt" }, type: "CallExpression", line: 1, column: 1 }]
  76         },
  77         {
  78             code: "window['prompt'](foo)",
  79             errors: [{ messageId: "unexpected", data: { name: "prompt" }, type: "CallExpression", line: 1, column: 1 }]
  80         },
  81         {
  82             code: "function alert() {} window.alert(foo)",
  83             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 21 }]
  84         },
  85         {
  86             code: "var alert = function() {};\nwindow.alert(foo)",
  87             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 2, column: 1 }]
  88         },
  89         {
  90             code: "function foo(alert) { window.alert(); }",
  91             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 23 }]
  92         },
  93         {
  94             code: "function foo() { alert(); }",
  95             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 18 }]
  96         },
  97         {
  98             code: "function foo() { var alert = function() {}; }\nalert();",
  99             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 2, column: 1 }]
 100         },
 101         {
 102             code: "this.alert(foo)",
 103             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 1 }]
 104         },
 105         {
 106             code: "this['alert'](foo)",
 107             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 1 }]
 108         },
 109         {
 110             code: "function foo() { var window = bar; window.alert(); }\nwindow.alert();",
 111             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 2, column: 1 }]
 112         },
 113         {
 114             code: "globalThis['alert'](foo)",
 115             env: { es2020: true },
 116             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 1 }]
 117         },
 118         {
 119             code: "globalThis.alert();",
 120             env: { es2020: true },
 121             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 1, column: 1 }]
 122         },
 123         {
 124             code: "function foo() { var globalThis = bar; globalThis.alert(); }\nglobalThis.alert();",
 125             env: { es2020: true },
 126             errors: [{ messageId: "unexpected", data: { name: "alert" }, type: "CallExpression", line: 2, column: 1 }]
 127         }
 128     ]
 129 });