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test: clean up test-buffer-badhex #7773

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merged 1 commit into from
Sep 29, 2016
Merged

test: clean up test-buffer-badhex #7773

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60 changes: 33 additions & 27 deletions test/parallel/test-buffer-badhex.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,39 +5,45 @@ const Buffer = require('buffer').Buffer;

// Test hex strings and bad hex strings
{
const buf1 = Buffer.alloc(4);
assert.strictEqual(buf1.length, 4);
assert.deepStrictEqual(buf1, new Buffer([0, 0, 0, 0]));
assert.strictEqual(buf1.write('abcdxx', 0, 'hex'), 2);
assert.deepStrictEqual(buf1, new Buffer([0xab, 0xcd, 0x00, 0x00]));
assert.strictEqual(buf1.toString('hex'), 'abcd0000');
assert.strictEqual(buf1.write('abcdef01', 0, 'hex'), 4);
assert.deepStrictEqual(buf1, new Buffer([0xab, 0xcd, 0xef, 0x01]));
assert.strictEqual(buf1.toString('hex'), 'abcdef01');
const buf = Buffer.alloc(4);
assert.strictEqual(buf.length, 4);
assert.deepStrictEqual(buf, new Buffer([0, 0, 0, 0]));
assert.strictEqual(buf.write('abcdxx', 0, 'hex'), 2);
assert.deepStrictEqual(buf, new Buffer([0xab, 0xcd, 0x00, 0x00]));
assert.strictEqual(buf.toString('hex'), 'abcd0000');
assert.strictEqual(buf.write('abcdef01', 0, 'hex'), 4);
assert.deepStrictEqual(buf, new Buffer([0xab, 0xcd, 0xef, 0x01]));
assert.strictEqual(buf.toString('hex'), 'abcdef01');

const buf2 = Buffer.from(buf1.toString('hex'), 'hex');
assert.strictEqual(buf1.toString('hex'), buf2.toString('hex'));
const copy = Buffer.from(buf.toString('hex'), 'hex');
assert.strictEqual(buf.toString('hex'), copy.toString('hex'));
}

const buf3 = Buffer.alloc(5);
assert.strictEqual(buf3.write('abcdxx', 1, 'hex'), 2);
assert.strictEqual(buf3.toString('hex'), '00abcd0000');
{
const buf = Buffer.alloc(5);
assert.strictEqual(buf.write('abcdxx', 1, 'hex'), 2);
assert.strictEqual(buf.toString('hex'), '00abcd0000');
}

const buf4 = Buffer.alloc(4);
assert.deepStrictEqual(buf4, new Buffer([0, 0, 0, 0]));
assert.strictEqual(buf4.write('xxabcd', 0, 'hex'), 0);
assert.deepStrictEqual(buf4, new Buffer([0, 0, 0, 0]));
assert.strictEqual(buf4.write('xxab', 1, 'hex'), 0);
assert.deepStrictEqual(buf4, new Buffer([0, 0, 0, 0]));
assert.strictEqual(buf4.write('cdxxab', 0, 'hex'), 1);
assert.deepStrictEqual(buf4, new Buffer([0xcd, 0, 0, 0]));
{
const buf = Buffer.alloc(4);
assert.deepStrictEqual(buf, new Buffer([0, 0, 0, 0]));
assert.strictEqual(buf.write('xxabcd', 0, 'hex'), 0);
assert.deepStrictEqual(buf, new Buffer([0, 0, 0, 0]));
assert.strictEqual(buf.write('xxab', 1, 'hex'), 0);
assert.deepStrictEqual(buf, new Buffer([0, 0, 0, 0]));
assert.strictEqual(buf.write('cdxxab', 0, 'hex'), 1);
assert.deepStrictEqual(buf, new Buffer([0xcd, 0, 0, 0]));
}

const buf5 = Buffer.alloc(256);
{
const buf = Buffer.alloc(256);
for (let i = 0; i < 256; i++)
buf5[i] = i;
buf[i] = i;

const hex = buf5.toString('hex');
assert.deepStrictEqual(Buffer.from(hex, 'hex'), buf5);
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'), buf5.slice(0, 128));
assert.deepStrictEqual(Buffer.from(badHex, 'hex'), buf.slice(0, 128));
}