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'use strict'; require('../common'); const assert = require('assert'); // Test hex strings and bad hex strings { const buf = Buffer.alloc(4); assert.strictEqual(buf.length, 4); assert.deepStrictEqual(buf, Buffer.from([0, 0, 0, 0])); assert.strictEqual(buf.write('abcdxx', 0, 'hex'), 2); assert.deepStrictEqual(buf, Buffer.from([0xab, 0xcd, 0x00, 0x00])); assert.strictEqual(buf.toString('hex'), 'abcd0000'); assert.strictEqual(buf.write('abcdef01', 0, 'hex'), 4); assert.deepStrictEqual(buf, Buffer.from([0xab, 0xcd, 0xef, 0x01])); assert.strictEqual(buf.toString('hex'), 'abcdef01'); const copy = Buffer.from(buf.toString('hex'), 'hex'); assert.strictEqual(buf.toString('hex'), copy.toString('hex')); } { const buf = Buffer.alloc(5); assert.strictEqual(buf.write('abcdxx', 1, 'hex'), 2); assert.strictEqual(buf.toString('hex'), '00abcd0000'); } { const buf = Buffer.alloc(4); assert.deepStrictEqual(buf, Buffer.from([0, 0, 0, 0])); assert.strictEqual(buf.write('xxabcd', 0, 'hex'), 0); assert.deepStrictEqual(buf, Buffer.from([0, 0, 0, 0])); assert.strictEqual(buf.write('xxab', 1, 'hex'), 0); assert.deepStrictEqual(buf, Buffer.from([0, 0, 0, 0])); assert.strictEqual(buf.write('cdxxab', 0, 'hex'), 1); assert.deepStrictEqual(buf, Buffer.from([0xcd, 0, 0, 0])); } { const buf = Buffer.alloc(256); for (let i = 0; i < 256; i++) buf[i] = i; const hex = buf.toString('hex'); assert.deepStrictEqual(Buffer.from(hex, 'hex'), buf); const badHex = `${hex.slice(0, 256)}xx${hex.slice(256, 510)}`; assert.deepStrictEqual(Buffer.from(badHex, 'hex'), buf.slice(0, 128)); }