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8b76c3e60c
PR-URL: https://github.com/nodejs/node/pull/12735 Refs: https://github.com/nodejs/node/pull/12455 Reviewed-By: Refael Ackermann <refack@gmail.com> Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
50 lines
1.6 KiB
JavaScript
50 lines
1.6 KiB
JavaScript
'use strict';
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require('../common');
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const assert = require('assert');
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const Buffer = require('buffer').Buffer;
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// Test hex strings and bad hex strings
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{
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const buf = Buffer.alloc(4);
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assert.strictEqual(buf.length, 4);
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assert.deepStrictEqual(buf, new Buffer([0, 0, 0, 0]));
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assert.strictEqual(buf.write('abcdxx', 0, 'hex'), 2);
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assert.deepStrictEqual(buf, new Buffer([0xab, 0xcd, 0x00, 0x00]));
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assert.strictEqual(buf.toString('hex'), 'abcd0000');
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assert.strictEqual(buf.write('abcdef01', 0, 'hex'), 4);
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assert.deepStrictEqual(buf, new Buffer([0xab, 0xcd, 0xef, 0x01]));
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assert.strictEqual(buf.toString('hex'), 'abcdef01');
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const copy = Buffer.from(buf.toString('hex'), 'hex');
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assert.strictEqual(buf.toString('hex'), copy.toString('hex'));
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}
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{
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const buf = Buffer.alloc(5);
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assert.strictEqual(buf.write('abcdxx', 1, 'hex'), 2);
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assert.strictEqual(buf.toString('hex'), '00abcd0000');
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}
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{
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const buf = Buffer.alloc(4);
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assert.deepStrictEqual(buf, new Buffer([0, 0, 0, 0]));
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assert.strictEqual(buf.write('xxabcd', 0, 'hex'), 0);
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assert.deepStrictEqual(buf, new Buffer([0, 0, 0, 0]));
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assert.strictEqual(buf.write('xxab', 1, 'hex'), 0);
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assert.deepStrictEqual(buf, new Buffer([0, 0, 0, 0]));
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assert.strictEqual(buf.write('cdxxab', 0, 'hex'), 1);
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assert.deepStrictEqual(buf, new Buffer([0xcd, 0, 0, 0]));
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}
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{
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const buf = Buffer.alloc(256);
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for (let i = 0; i < 256; i++)
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buf[i] = i;
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const hex = buf.toString('hex');
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assert.deepStrictEqual(Buffer.from(hex, 'hex'), buf);
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const badHex = `${hex.slice(0, 256)}xx${hex.slice(256, 510)}`;
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assert.deepStrictEqual(Buffer.from(badHex, 'hex'), buf.slice(0, 128));
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}
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