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

   1 /**
   2  * @fileoverview Tests for no-eval rule.
   3  * @author Nicholas C. Zakas
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const rule = require("../../../lib/rules/no-eval"),
  13     { RuleTester } = require("../../../lib/rule-tester");
  14
  15 //------------------------------------------------------------------------------
  16 // Tests
  17 //------------------------------------------------------------------------------
  18
  19 const ruleTester = new RuleTester();
  20
  21 ruleTester.run("no-eval", rule, {
  22     valid: [
  23         "Eval(foo)",
  24         "setTimeout('foo')",
  25         "setInterval('foo')",
  26         "window.setTimeout('foo')",
  27         "window.setInterval('foo')",
  28
  29         // User-defined eval methods.
  30         "window.eval('foo')",
  31         { code: "window.eval('foo')", env: { node: true } },
  32         { code: "window.noeval('foo')", env: { browser: true } },
  33         { code: "function foo() { var eval = 'foo'; window[eval]('foo') }", env: { browser: true } },
  34         "global.eval('foo')",
  35         { code: "global.eval('foo')", env: { browser: true } },
  36         { code: "global.noeval('foo')", env: { node: true } },
  37         { code: "function foo() { var eval = 'foo'; global[eval]('foo') }", env: { node: true } },
  38         "globalThis.eval('foo')",
  39         { code: "globalThis.eval('foo')", env: { es2017: true } },
  40         { code: "globalThis.eval('foo')", env: { browser: true } },
  41         { code: "globalThis.noneval('foo')", env: { es2020: true } },
  42         { code: "function foo() { var eval = 'foo'; globalThis[eval]('foo') }", env: { es2020: true } },
  43         "this.noeval('foo');",
  44         "function foo() { 'use strict'; this.eval('foo'); }",
  45         { code: "function foo() { this.eval('foo'); }", parserOptions: { ecmaVersion: 6, sourceType: "module" } },
  46         { code: "function foo() { this.eval('foo'); }", parserOptions: { ecmaFeatures: { impliedStrict: true } } },
  47         "var obj = {foo: function() { this.eval('foo'); }}",
  48         "var obj = {}; obj.foo = function() { this.eval('foo'); }",
  49         { code: "class A { foo() { this.eval(); } }", parserOptions: { ecmaVersion: 6 } },
  50         { code: "class A { static foo() { this.eval(); } }", parserOptions: { ecmaVersion: 6 } },
  51
  52         // Allows indirect eval
  53         { code: "(0, eval)('foo')", options: [{ allowIndirect: true }] },
  54         { code: "(0, window.eval)('foo')", options: [{ allowIndirect: true }], env: { browser: true } },
  55         { code: "(0, window['eval'])('foo')", options: [{ allowIndirect: true }], env: { browser: true } },
  56         { code: "var EVAL = eval; EVAL('foo')", options: [{ allowIndirect: true }] },
  57         { code: "var EVAL = this.eval; EVAL('foo')", options: [{ allowIndirect: true }] },
  58         { code: "(function(exe){ exe('foo') })(eval);", options: [{ allowIndirect: true }] },
  59         { code: "window.eval('foo')", options: [{ allowIndirect: true }], env: { browser: true } },
  60         { code: "window.window.eval('foo')", options: [{ allowIndirect: true }], env: { browser: true } },
  61         { code: "window.window['eval']('foo')", options: [{ allowIndirect: true }], env: { browser: true } },
  62         { code: "global.eval('foo')", options: [{ allowIndirect: true }], env: { node: true } },
  63         { code: "global.global.eval('foo')", options: [{ allowIndirect: true }], env: { node: true } },
  64         { code: "this.eval('foo')", options: [{ allowIndirect: true }] },
  65         { code: "function foo() { this.eval('foo') }", options: [{ allowIndirect: true }] },
  66         { code: "(0, globalThis.eval)('foo')", options: [{ allowIndirect: true }], env: { es2020: true } },
  67         { code: "(0, globalThis['eval'])('foo')", options: [{ allowIndirect: true }], env: { es2020: true } },
  68         { code: "var EVAL = globalThis.eval; EVAL('foo')", options: [{ allowIndirect: true }] },
  69         { code: "function foo() { globalThis.eval('foo') }", options: [{ allowIndirect: true }], env: { es2020: true } },
  70         { code: "globalThis.globalThis.eval('foo');", options: [{ allowIndirect: true }], env: { es2020: true } }
  71     ],
  72
  73     invalid: [
  74
  75         // Direct eval
  76         { code: "eval(foo)", errors: [{ messageId: "unexpected", type: "CallExpression", column: 1, endColumn: 5 }] },
  77         { code: "eval('foo')", errors: [{ messageId: "unexpected", type: "CallExpression", column: 1, endColumn: 5 }] },
  78         { code: "function foo(eval) { eval('foo') }", errors: [{ messageId: "unexpected", type: "CallExpression", column: 22, endColumn: 26 }] },
  79         { code: "eval(foo)", options: [{ allowIndirect: true }], errors: [{ messageId: "unexpected", type: "CallExpression", column: 1, endColumn: 5 }] },
  80         { code: "eval('foo')", options: [{ allowIndirect: true }], errors: [{ messageId: "unexpected", type: "CallExpression", column: 1, endColumn: 5 }] },
  81         { code: "function foo(eval) { eval('foo') }", options: [{ allowIndirect: true }], errors: [{ messageId: "unexpected", type: "CallExpression", column: 22, endColumn: 26 }] },
  82
  83         // Indirect eval
  84         { code: "(0, eval)('foo')", errors: [{ messageId: "unexpected", type: "Identifier", column: 5, endColumn: 9 }] },
  85         { code: "(0, window.eval)('foo')", env: { browser: true }, errors: [{ messageId: "unexpected", type: "MemberExpression", column: 12, endColumn: 16 }] },
  86         { code: "(0, window['eval'])('foo')", env: { browser: true }, errors: [{ messageId: "unexpected", type: "MemberExpression", column: 12, endColumn: 18 }] },
  87         { code: "var EVAL = eval; EVAL('foo')", errors: [{ messageId: "unexpected", type: "Identifier", column: 12, endColumn: 16 }] },
  88         { code: "var EVAL = this.eval; EVAL('foo')", errors: [{ messageId: "unexpected", type: "MemberExpression", column: 17, endColumn: 21 }] },
  89         { code: "(function(exe){ exe('foo') })(eval);", errors: [{ messageId: "unexpected", type: "Identifier", column: 31, endColumn: 35 }] },
  90         { code: "window.eval('foo')", env: { browser: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 8, endColumn: 12 }] },
  91         { code: "window.window.eval('foo')", env: { browser: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 15, endColumn: 19 }] },
  92         { code: "window.window['eval']('foo')", env: { browser: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 15, endColumn: 21 }] },
  93         { code: "global.eval('foo')", env: { node: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 8, endColumn: 12 }] },
  94         { code: "global.global.eval('foo')", env: { node: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 15, endColumn: 19 }] },
  95         { code: "global.global[`eval`]('foo')", parserOptions: { ecmaVersion: 6 }, env: { node: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 15, endColumn: 21 }] },
  96         { code: "this.eval('foo')", errors: [{ messageId: "unexpected", type: "CallExpression", column: 6, endColumn: 10 }] },
  97         { code: "function foo() { this.eval('foo') }", errors: [{ messageId: "unexpected", type: "CallExpression", column: 23, endColumn: 27 }] },
  98         { code: "var EVAL = globalThis.eval; EVAL('foo')", env: { es2020: true }, errors: [{ messageId: "unexpected", type: "MemberExpression", column: 23, endColumn: 27 }] },
  99         { code: "globalThis.eval('foo')", env: { es2020: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 12, endColumn: 16 }] },
 100         { code: "globalThis.globalThis.eval('foo')", env: { es2020: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 23, endColumn: 27 }] },
 101         { code: "globalThis.globalThis['eval']('foo')", env: { es2020: true }, errors: [{ messageId: "unexpected", type: "CallExpression", column: 23, endColumn: 29 }] },
 102         { code: "(0, globalThis.eval)('foo')", env: { es2020: true }, errors: [{ messageId: "unexpected", type: "MemberExpression", column: 16, endColumn: 20 }] },
 103         { code: "(0, globalThis['eval'])('foo')", env: { es2020: true }, errors: [{ messageId: "unexpected", type: "MemberExpression", column: 16, endColumn: 22 }] }
 104     ]
 105 });