deno.land / std@0.166.0 / node / _tools / test / parallel / test-buffer-writeuint.js
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// 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');
// We need to check the following things:// - We are correctly resolving big endian (doesn't mean anything for 8 bit)// - Correctly resolving little endian (doesn't mean anything for 8 bit)// - Correctly using the offsets// - Correctly interpreting values that are beyond the signed range as unsigned
{ // OOB const data = Buffer.alloc(8); ['UInt8', 'UInt16BE', 'UInt16LE', 'UInt32BE', 'UInt32LE'].forEach((fn) => {
// Verify that default offset works fine. data[`write${fn}`](23, undefined); data[`write${fn}`](23);
['', '0', null, {}, [], () => {}, true, false].forEach((o) => { assert.throws( () => data[`write${fn}`](23, o), { code: 'ERR_INVALID_ARG_TYPE' }); });
[NaN, Infinity, -1, 1.01].forEach((o) => { assert.throws( () => data[`write${fn}`](23, o), { code: 'ERR_OUT_OF_RANGE' }); }); });}
{ // Test 8 bit const data = Buffer.alloc(4);
data.writeUInt8(23, 0); data.writeUInt8(23, 1); data.writeUInt8(23, 2); data.writeUInt8(23, 3); assert.ok(data.equals(new Uint8Array([23, 23, 23, 23])));
data.writeUInt8(23, 0); data.writeUInt8(23, 1); data.writeUInt8(23, 2); data.writeUInt8(23, 3); assert.ok(data.equals(new Uint8Array([23, 23, 23, 23])));
data.writeUInt8(255, 0); assert.strictEqual(data[0], 255);
data.writeUInt8(255, 0); assert.strictEqual(data[0], 255);}
// Test 16 bit{ let value = 0x2343; const data = Buffer.alloc(4);
data.writeUInt16BE(value, 0); assert.ok(data.equals(new Uint8Array([0x23, 0x43, 0, 0])));
data.writeUInt16BE(value, 1); assert.ok(data.equals(new Uint8Array([0x23, 0x23, 0x43, 0])));
data.writeUInt16BE(value, 2); assert.ok(data.equals(new Uint8Array([0x23, 0x23, 0x23, 0x43])));
data.writeUInt16LE(value, 0); assert.ok(data.equals(new Uint8Array([0x43, 0x23, 0x23, 0x43])));
data.writeUInt16LE(value, 1); assert.ok(data.equals(new Uint8Array([0x43, 0x43, 0x23, 0x43])));
data.writeUInt16LE(value, 2); assert.ok(data.equals(new Uint8Array([0x43, 0x43, 0x43, 0x23])));
value = 0xff80; data.writeUInt16LE(value, 0); assert.ok(data.equals(new Uint8Array([0x80, 0xff, 0x43, 0x23])));
data.writeUInt16BE(value, 0); assert.ok(data.equals(new Uint8Array([0xff, 0x80, 0x43, 0x23])));
value = 0xfffff; ['writeUInt16BE', 'writeUInt16LE'].forEach((fn) => { assert.throws( () => data[fn](value, 0), { code: 'ERR_OUT_OF_RANGE', message: 'The value of "value" is out of range. ' + `It must be >= 0 and <= 65535. Received ${value}` } ); });}
// Test 32 bit{ const data = Buffer.alloc(6); const value = 0xe7f90a6d;
data.writeUInt32BE(value, 0); assert.ok(data.equals(new Uint8Array([0xe7, 0xf9, 0x0a, 0x6d, 0, 0])));
data.writeUInt32BE(value, 1); assert.ok(data.equals(new Uint8Array([0xe7, 0xe7, 0xf9, 0x0a, 0x6d, 0])));
data.writeUInt32BE(value, 2); assert.ok(data.equals(new Uint8Array([0xe7, 0xe7, 0xe7, 0xf9, 0x0a, 0x6d])));
data.writeUInt32LE(value, 0); assert.ok(data.equals(new Uint8Array([0x6d, 0x0a, 0xf9, 0xe7, 0x0a, 0x6d])));
data.writeUInt32LE(value, 1); assert.ok(data.equals(new Uint8Array([0x6d, 0x6d, 0x0a, 0xf9, 0xe7, 0x6d])));
data.writeUInt32LE(value, 2); assert.ok(data.equals(new Uint8Array([0x6d, 0x6d, 0x6d, 0x0a, 0xf9, 0xe7])));}
// Test 48 bit{ const value = 0x1234567890ab; const data = Buffer.allocUnsafe(6); data.writeUIntBE(value, 0, 6); assert.ok(data.equals(new Uint8Array([0x12, 0x34, 0x56, 0x78, 0x90, 0xab])));
data.writeUIntLE(value, 0, 6); assert.ok(data.equals(new Uint8Array([0xab, 0x90, 0x78, 0x56, 0x34, 0x12])));}
// Test UInt{ const data = Buffer.alloc(8); let val = 0x100;
// Check byteLength. ['writeUIntBE', 'writeUIntLE'].forEach((fn) => { ['', '0', null, {}, [], () => {}, true, false, undefined].forEach((bl) => { assert.throws( () => data[fn](23, 0, bl), { code: 'ERR_INVALID_ARG_TYPE' }); });
[Infinity, -1].forEach((byteLength) => { assert.throws( () => data[fn](23, 0, byteLength), { code: 'ERR_OUT_OF_RANGE', message: 'The value of "byteLength" is out of range. ' + `It must be >= 1 and <= 6. Received ${byteLength}` } ); });
[NaN, 1.01].forEach((byteLength) => { assert.throws( () => data[fn](42, 0, byteLength), { code: 'ERR_OUT_OF_RANGE', name: 'RangeError', message: 'The value of "byteLength" is out of range. ' + `It must be an integer. Received ${byteLength}` }); }); });
// Test 1 to 6 bytes. for (let i = 1; i <= 6; i++) { const range = i < 5 ? `= ${val - 1}` : ` 2 ** ${i * 8}`; const received = i > 4 ? String(val).replace(/(\d)(?=(\d\d\d)+(?!\d))/g, '$1_') : val; ['writeUIntBE', 'writeUIntLE'].forEach((fn) => { assert.throws(() => { data[fn](val, 0, i); }, { code: 'ERR_OUT_OF_RANGE', name: 'RangeError', message: 'The value of "value" is out of range. ' + `It must be >= 0 and <${range}. Received ${received}` });
['', '0', null, {}, [], () => {}, true, false].forEach((o) => { assert.throws( () => data[fn](23, o, i), { code: 'ERR_INVALID_ARG_TYPE', name: 'TypeError' }); });
[Infinity, -1, -4294967295].forEach((offset) => { assert.throws( () => data[fn](val - 1, offset, i), { code: 'ERR_OUT_OF_RANGE', name: 'RangeError', message: 'The value of "offset" is out of range. ' + `It must be >= 0 and <= ${8 - i}. Received ${offset}` }); });
[NaN, 1.01].forEach((offset) => { assert.throws( () => data[fn](val - 1, offset, i), { code: 'ERR_OUT_OF_RANGE', name: 'RangeError', message: 'The value of "offset" is out of range. ' + `It must be an integer. Received ${offset}` }); }); });
val *= 0x100; }}
for (const fn of [ 'UInt8', 'UInt16LE', 'UInt16BE', 'UInt32LE', 'UInt32BE', 'UIntLE', 'UIntBE', 'BigUInt64LE', 'BigUInt64BE',]) { const p = Buffer.prototype; const lowerFn = fn.replace(/UInt/, 'Uint'); assert.strictEqual(p[`write${fn}`], p[`write${lowerFn}`]); assert.strictEqual(p[`read${fn}`], p[`read${lowerFn}`]);}
std
Version Info
a year ago
