pve-eslint/eslint/tests/lib/rules/no-buffer-constructor.js

/**
 * @fileoverview disallow use of the Buffer() constructor
 * @author Teddy Katz
 */
"use strict";

//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------

const rule = require("../../../lib/rules/no-buffer-constructor");
const { RuleTester } = require("../../../lib/rule-tester");

//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------

const CALL_ERROR = {
    messageId: "deprecated",
    data: {
        expr: "Buffer()"
    },
    type: "CallExpression"
};
const CONSTRUCT_ERROR = {
    messageId: "deprecated",
    data: {
        expr: "new Buffer()"
    },
    type: "NewExpression"
};

const ruleTester = new RuleTester();

ruleTester.run("no-buffer-constructor", rule, {

    valid: [
        "Buffer.alloc(5)",
        "Buffer.allocUnsafe(5)",
        "new Buffer.Foo()",
        "Buffer.from([1, 2, 3])",
        "foo(Buffer)",
        "Buffer.alloc(res.body.amount)",
        "Buffer.from(res.body.values)"
    ],

    invalid: [
        {
            code: "Buffer(5)",
            errors: [CALL_ERROR]
        },
        {
            code: "new Buffer(5)",
            errors: [CONSTRUCT_ERROR]
        },
        {
            code: "Buffer([1, 2, 3])",
            errors: [CALL_ERROR]
        },
        {
            code: "new Buffer([1, 2, 3])",
            errors: [CONSTRUCT_ERROR]
        },
        {
            code: "new Buffer(res.body.amount)",
            errors: [CONSTRUCT_ERROR]
        },
        {
            code: "new Buffer(res.body.values)",
            errors: [CONSTRUCT_ERROR]
        }
    ]
});