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

test-buffer-readuint.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');
// Test OOB{ const buffer = Buffer.alloc(4);
['UInt8', 'UInt16BE', 'UInt16LE', 'UInt32BE', 'UInt32LE'].forEach((fn) => {
// Verify that default offset works fine. buffer[`read${fn}`](undefined); buffer[`read${fn}`]();
['', '0', null, {}, [], () => {}, true, false].forEach((o) => { assert.throws( () => buffer[`read${fn}`](o), { code: 'ERR_INVALID_ARG_TYPE', name: 'TypeError' }); });
[Infinity, -1, -4294967295].forEach((offset) => { assert.throws( () => buffer[`read${fn}`](offset), { code: 'ERR_OUT_OF_RANGE', name: 'RangeError' }); });
[NaN, 1.01].forEach((offset) => { assert.throws( () => buffer[`read${fn}`](offset), { code: 'ERR_OUT_OF_RANGE', name: 'RangeError', message: 'The value of "offset" is out of range. ' + `It must be an integer. Received ${offset}` }); }); });}
// Test 8 bit unsigned integers{ const data = Buffer.from([0xff, 0x2a, 0x2a, 0x2a]); assert.strictEqual(data.readUInt8(0), 255); assert.strictEqual(data.readUInt8(1), 42); assert.strictEqual(data.readUInt8(2), 42); assert.strictEqual(data.readUInt8(3), 42);}
// Test 16 bit unsigned integers{ const data = Buffer.from([0x00, 0x2a, 0x42, 0x3f]); assert.strictEqual(data.readUInt16BE(0), 0x2a); assert.strictEqual(data.readUInt16BE(1), 0x2a42); assert.strictEqual(data.readUInt16BE(2), 0x423f); assert.strictEqual(data.readUInt16LE(0), 0x2a00); assert.strictEqual(data.readUInt16LE(1), 0x422a); assert.strictEqual(data.readUInt16LE(2), 0x3f42);
data[0] = 0xfe; data[1] = 0xfe; assert.strictEqual(data.readUInt16BE(0), 0xfefe); assert.strictEqual(data.readUInt16LE(0), 0xfefe);}
// Test 32 bit unsigned integers{ const data = Buffer.from([0x32, 0x65, 0x42, 0x56, 0x23, 0xff]); assert.strictEqual(data.readUInt32BE(0), 0x32654256); assert.strictEqual(data.readUInt32BE(1), 0x65425623); assert.strictEqual(data.readUInt32BE(2), 0x425623ff); assert.strictEqual(data.readUInt32LE(0), 0x56426532); assert.strictEqual(data.readUInt32LE(1), 0x23564265); assert.strictEqual(data.readUInt32LE(2), 0xff235642);}
// Test UInt{ const buffer = Buffer.from([0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08]);
assert.strictEqual(buffer.readUIntLE(0, 1), 0x01); assert.strictEqual(buffer.readUIntBE(0, 1), 0x01); assert.strictEqual(buffer.readUIntLE(0, 3), 0x030201); assert.strictEqual(buffer.readUIntBE(0, 3), 0x010203); assert.strictEqual(buffer.readUIntLE(0, 5), 0x0504030201); assert.strictEqual(buffer.readUIntBE(0, 5), 0x0102030405); assert.strictEqual(buffer.readUIntLE(0, 6), 0x060504030201); assert.strictEqual(buffer.readUIntBE(0, 6), 0x010203040506); assert.strictEqual(buffer.readUIntLE(1, 6), 0x070605040302); assert.strictEqual(buffer.readUIntBE(1, 6), 0x020304050607); assert.strictEqual(buffer.readUIntLE(2, 6), 0x080706050403); assert.strictEqual(buffer.readUIntBE(2, 6), 0x030405060708);
// Check byteLength. ['readUIntBE', 'readUIntLE'].forEach((fn) => { ['', '0', null, {}, [], () => {}, true, false, undefined].forEach((len) => { assert.throws( () => buffer[fn](0, len), { code: 'ERR_INVALID_ARG_TYPE' }); });
[Infinity, -1].forEach((byteLength) => { assert.throws( () => buffer[fn](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( () => buffer[fn](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++) { ['readUIntBE', 'readUIntLE'].forEach((fn) => { ['', '0', null, {}, [], () => {}, true, false, undefined].forEach((o) => { assert.throws( () => buffer[fn](o, i), { code: 'ERR_INVALID_ARG_TYPE', name: 'TypeError' }); });
[Infinity, -1, -4294967295].forEach((offset) => { assert.throws( () => buffer[fn](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( () => buffer[fn](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}` }); }); }); }}
std

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a year ago