deno.land / std@0.166.0 / node / _tools / test / parallel / test-buffer-tostring-range.js

test-buffer-tostring-range.js
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// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.12.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
'use strict';
require('../common');const assert = require('assert');
const rangeBuffer = Buffer.from('abc');
// If start >= buffer's length, empty string will be returnedassert.strictEqual(rangeBuffer.toString('ascii', 3), '');assert.strictEqual(rangeBuffer.toString('ascii', +Infinity), '');assert.strictEqual(rangeBuffer.toString('ascii', 3.14, 3), '');assert.strictEqual(rangeBuffer.toString('ascii', 'Infinity', 3), '');
// If end <= 0, empty string will be returnedassert.strictEqual(rangeBuffer.toString('ascii', 1, 0), '');assert.strictEqual(rangeBuffer.toString('ascii', 1, -1.2), '');assert.strictEqual(rangeBuffer.toString('ascii', 1, -100), '');assert.strictEqual(rangeBuffer.toString('ascii', 1, -Infinity), '');
// If start < 0, start will be taken as zeroassert.strictEqual(rangeBuffer.toString('ascii', -1, 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', -1.99, 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', -Infinity, 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', '-1', 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', '-1.99', 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', '-Infinity', 3), 'abc');
// If start is an invalid integer, start will be taken as zeroassert.strictEqual(rangeBuffer.toString('ascii', 'node.js', 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', {}, 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', [], 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', NaN, 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', null, 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', undefined, 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', false, 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', '', 3), 'abc');
// But, if start is an integer when coerced, then it will be coerced and used.assert.strictEqual(rangeBuffer.toString('ascii', '-1', 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', '1', 3), 'bc');assert.strictEqual(rangeBuffer.toString('ascii', '-Infinity', 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', '3', 3), '');assert.strictEqual(rangeBuffer.toString('ascii', Number(3), 3), '');assert.strictEqual(rangeBuffer.toString('ascii', '3.14', 3), '');assert.strictEqual(rangeBuffer.toString('ascii', '1.99', 3), 'bc');assert.strictEqual(rangeBuffer.toString('ascii', '-1.99', 3), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 1.99, 3), 'bc');assert.strictEqual(rangeBuffer.toString('ascii', true, 3), 'bc');
// If end > buffer's length, end will be taken as buffer's lengthassert.strictEqual(rangeBuffer.toString('ascii', 0, 5), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, 6.99), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, Infinity), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, '5'), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, '6.99'), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, 'Infinity'), 'abc');
// If end is an invalid integer, end will be taken as buffer's lengthassert.strictEqual(rangeBuffer.toString('ascii', 0, 'node.js'), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, {}), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, NaN), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, undefined), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, null), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, []), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, false), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, ''), '');
// But, if end is an integer when coerced, then it will be coerced and used.assert.strictEqual(rangeBuffer.toString('ascii', 0, '-1'), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, '1'), 'a');assert.strictEqual(rangeBuffer.toString('ascii', 0, '-Infinity'), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, '3'), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, Number(3)), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, '3.14'), 'abc');assert.strictEqual(rangeBuffer.toString('ascii', 0, '1.99'), 'a');assert.strictEqual(rangeBuffer.toString('ascii', 0, '-1.99'), '');assert.strictEqual(rangeBuffer.toString('ascii', 0, 1.99), 'a');assert.strictEqual(rangeBuffer.toString('ascii', 0, true), 'a');
// Try toString() with an object as an encodingassert.strictEqual(rangeBuffer.toString({ toString: function() { return 'ascii';} }), 'abc');
// Try toString() with 0 and null as the encodingassert.throws(() => { rangeBuffer.toString(0, 1, 2);}, { code: 'ERR_UNKNOWN_ENCODING', name: 'TypeError', message: 'Unknown encoding: 0'});assert.throws(() => { rangeBuffer.toString(null, 1, 2);}, { code: 'ERR_UNKNOWN_ENCODING', name: 'TypeError', message: 'Unknown encoding: null'});
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