/
no-implied-eval.js
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/
no-implied-eval.js
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/**
* @fileoverview Tests for no-implied-eval rule.
* @author James Allardice
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-implied-eval"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester(),
expectedError = { messageId: "impliedEval", type: "CallExpression" };
ruleTester.run("no-implied-eval", rule, {
valid: [
"setTimeout();",
{ code: "setTimeout;", env: { browser: true } },
{ code: "setTimeout = foo;", env: { browser: true } },
{ code: "window.setTimeout;", env: { browser: true } },
{ code: "window.setTimeout = foo;", env: { browser: true } },
{ code: "window['setTimeout'];", env: { browser: true } },
{ code: "window['setTimeout'] = foo;", env: { browser: true } },
{ code: "global.setTimeout;", env: { node: true } },
{ code: "global.setTimeout = foo;", env: { node: true } },
{ code: "global['setTimeout'];", env: { node: true } },
{ code: "global['setTimeout'] = foo;", env: { node: true } },
{ code: "globalThis['setTimeout'] = foo;", env: { es2020: true } },
"window.setTimeout('foo')",
"window.setInterval('foo')",
"window['setTimeout']('foo')",
"window['setInterval']('foo')",
{ code: "window.setTimeout('foo')", env: { node: true } },
{ code: "window.setInterval('foo')", env: { node: true } },
{ code: "window['setTimeout']('foo')", env: { node: true } },
{ code: "window['setInterval']('foo')", env: { node: true } },
{ code: "global.setTimeout('foo')", env: { browser: true } },
{ code: "global.setInterval('foo')", env: { browser: true } },
{ code: "global['setTimeout']('foo')", env: { browser: true } },
{ code: "global['setInterval']('foo')", env: { browser: true } },
{ code: "globalThis.setTimeout('foo')", env: { es6: true } },
{ code: "globalThis['setInterval']('foo')", env: { es2017: true } },
{ code: "window[`SetTimeOut`]('foo', 100);", parserOptions: { ecmaVersion: 6 }, env: { browser: true } },
{ code: "global[`SetTimeOut`]('foo', 100);", parserOptions: { ecmaVersion: 6 }, env: { node: true } },
{ code: "global[`setTimeout${foo}`]('foo', 100);", parserOptions: { ecmaVersion: 6 }, env: { browser: true } },
{ code: "global[`setTimeout${foo}`]('foo', 100);", parserOptions: { ecmaVersion: 6 }, env: { node: true } },
{ code: "globalThis[`setTimeout${foo}`]('foo', 100);", parserOptions: { ecmaVersion: 6 }, env: { es2020: true } },
// normal usage
"setTimeout(function() { x = 1; }, 100);",
"setInterval(function() { x = 1; }, 100)",
"execScript(function() { x = 1; }, 100)",
{ code: "window.setTimeout(function() { x = 1; }, 100);", env: { browser: true } },
{ code: "window.setInterval(function() { x = 1; }, 100);", env: { browser: true } },
{ code: "window.execScript(function() { x = 1; }, 100);", env: { browser: true } },
{ code: "window.setTimeout(foo, 100);", env: { browser: true } },
{ code: "window.setInterval(foo, 100);", env: { browser: true } },
{ code: "window.execScript(foo, 100);", env: { browser: true } },
{ code: "global.setTimeout(function() { x = 1; }, 100);", env: { node: true } },
{ code: "global.setInterval(function() { x = 1; }, 100);", env: { node: true } },
{ code: "global.execScript(function() { x = 1; }, 100);", env: { node: true } },
{ code: "global.setTimeout(foo, 100);", env: { node: true } },
{ code: "global.setInterval(foo, 100);", env: { node: true } },
{ code: "global.execScript(foo, 100);", env: { node: true } },
{ code: "globalThis.setTimeout(foo, 100);", env: { es2020: true } },
// only checks on top-level statements or window.*
"foo.setTimeout('hi')",
// identifiers are fine
"setTimeout(foo, 10)",
"setInterval(1, 10)",
"execScript(2)",
// as are function expressions
"setTimeout(function() {}, 10)",
// setInterval
"foo.setInterval('hi')",
"setInterval(foo, 10)",
"setInterval(function() {}, 10)",
// execScript
"foo.execScript('hi')",
"execScript(foo)",
"execScript(function() {})",
// a binary plus on non-strings doesn't guarantee a string
"setTimeout(foo + bar, 10)",
// doesn't check anything but the first argument
"setTimeout(foobar, 'buzz')",
"setTimeout(foobar, foo + 'bar')",
// only checks immediate subtrees of the argument
"setTimeout(function() { return 'foobar'; }, 10)",
// https://github.com/eslint/eslint/issues/7821
"setTimeoutFooBar('Foo Bar')",
{ code: "foo.window.setTimeout('foo', 100);", env: { browser: true } },
{ code: "foo.global.setTimeout('foo', 100);", env: { node: true } },
{ code: "var window; window.setTimeout('foo', 100);", env: { browser: true } },
{ code: "var global; global.setTimeout('foo', 100);", env: { node: true } },
{ code: "function foo(window) { window.setTimeout('foo', 100); }", env: { browser: true } },
{ code: "function foo(global) { global.setTimeout('foo', 100); }", env: { node: true } },
{ code: "foo('', window.setTimeout);", env: { browser: true } },
{ code: "foo('', global.setTimeout);", env: { node: true } }
],
invalid: [
{ code: "setTimeout(\"x = 1;\");", errors: [expectedError] },
{ code: "setTimeout(\"x = 1;\", 100);", errors: [expectedError] },
{ code: "setInterval(\"x = 1;\");", errors: [expectedError] },
{ code: "execScript(\"x = 1;\");", errors: [expectedError] },
{ code: "const s = 'x=1'; setTimeout(s, 100);", parserOptions: { ecmaVersion: 6 }, errors: [expectedError] },
{ code: "setTimeout(String('x=1'), 100);", parserOptions: { ecmaVersion: 6 }, errors: [expectedError] },
// member expressions
{ code: "window.setTimeout('foo')", env: { browser: true }, errors: [expectedError] },
{ code: "window.setInterval('foo')", env: { browser: true }, errors: [expectedError] },
{ code: "window['setTimeout']('foo')", env: { browser: true }, errors: [expectedError] },
{ code: "window['setInterval']('foo')", env: { browser: true }, errors: [expectedError] },
{ code: "window[`setInterval`]('foo')", parserOptions: { ecmaVersion: 6 }, env: { browser: true }, errors: [expectedError] },
{ code: "window.window['setInterval']('foo')", env: { browser: true }, errors: [expectedError] },
{ code: "global.setTimeout('foo')", env: { node: true }, errors: [expectedError] },
{ code: "global.setInterval('foo')", env: { node: true }, errors: [expectedError] },
{ code: "global['setTimeout']('foo')", env: { node: true }, errors: [expectedError] },
{ code: "global['setInterval']('foo')", env: { node: true }, errors: [expectedError] },
{ code: "global[`setInterval`]('foo')", parserOptions: { ecmaVersion: 6 }, env: { node: true }, errors: [expectedError] },
{ code: "global.global['setInterval']('foo')", env: { node: true }, errors: [expectedError] },
{ code: "globalThis.setTimeout('foo')", env: { es2020: true }, errors: [expectedError] },
{ code: "globalThis.setInterval('foo')", env: { es2020: true }, errors: [expectedError] },
// template literals
{ code: "setTimeout(`foo${bar}`)", parserOptions: { ecmaVersion: 6 }, errors: [expectedError] },
{ code: "window.setTimeout(`foo${bar}`)", parserOptions: { ecmaVersion: 6 }, env: { browser: true }, errors: [expectedError] },
{ code: "window.window.setTimeout(`foo${bar}`)", parserOptions: { ecmaVersion: 6 }, env: { browser: true }, errors: [expectedError] },
{ code: "global.global.setTimeout(`foo${bar}`)", parserOptions: { ecmaVersion: 6 }, env: { node: true }, errors: [expectedError] },
// string concatination
{ code: "setTimeout('foo' + bar)", errors: [expectedError] },
{ code: "setTimeout(foo + 'bar')", errors: [expectedError] },
{ code: "setTimeout(`foo` + bar)", parserOptions: { ecmaVersion: 6 }, errors: [expectedError] },
{ code: "setTimeout(1 + ';' + 1)", errors: [expectedError] },
{ code: "window.setTimeout('foo' + bar)", env: { browser: true }, errors: [expectedError] },
{ code: "window.setTimeout(foo + 'bar')", env: { browser: true }, errors: [expectedError] },
{ code: "window.setTimeout(`foo` + bar)", parserOptions: { ecmaVersion: 6 }, env: { browser: true }, errors: [expectedError] },
{ code: "window.setTimeout(1 + ';' + 1)", env: { browser: true }, errors: [expectedError] },
{ code: "window.window.setTimeout(1 + ';' + 1)", env: { browser: true }, errors: [expectedError] },
{ code: "global.setTimeout('foo' + bar)", env: { node: true }, errors: [expectedError] },
{ code: "global.setTimeout(foo + 'bar')", env: { node: true }, errors: [expectedError] },
{ code: "global.setTimeout(`foo` + bar)", parserOptions: { ecmaVersion: 6 }, env: { node: true }, errors: [expectedError] },
{ code: "global.setTimeout(1 + ';' + 1)", env: { node: true }, errors: [expectedError] },
{ code: "global.global.setTimeout(1 + ';' + 1)", env: { node: true }, errors: [expectedError] },
{ code: "globalThis.setTimeout('foo' + bar)", env: { es2020: true }, errors: [expectedError] },
// gives the correct node when dealing with nesting
{
code:
"setTimeout('foo' + (function() {\n" +
" setTimeout(helper);\n" +
" execScript('str');\n" +
" return 'bar';\n" +
"})())",
errors: [
{
messageId: "impliedEval",
type: "CallExpression",
line: 1
},
// no error on line 2
{
messageId: "impliedEval",
type: "CallExpression",
line: 3
}
]
},
{
code:
"window.setTimeout('foo' + (function() {\n" +
" setTimeout(helper);\n" +
" window.execScript('str');\n" +
" return 'bar';\n" +
"})())",
env: { browser: true },
errors: [
{
messageId: "impliedEval",
type: "CallExpression",
line: 1
},
// no error on line 2
{
messageId: "impliedEval",
type: "CallExpression",
line: 3
}
]
},
{
code:
"global.setTimeout('foo' + (function() {\n" +
" setTimeout(helper);\n" +
" global.execScript('str');\n" +
" return 'bar';\n" +
"})())",
env: { node: true },
errors: [
{
messageId: "impliedEval",
type: "CallExpression",
line: 1
},
// no error on line 2
{
messageId: "impliedEval",
type: "CallExpression",
line: 3
}
]
}
]
});