mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
2.3 KiB
67 lines
2.3 KiB
'use strict';
|
|
const common = require('../common');
|
|
const assert = require('assert');
|
|
|
|
const zero = [];
|
|
const one = [ Buffer.from('asdf') ];
|
|
const long = [];
|
|
for (let i = 0; i < 10; i++) long.push(Buffer.from('asdf'));
|
|
|
|
const flatZero = Buffer.concat(zero);
|
|
const flatOne = Buffer.concat(one);
|
|
const flatLong = Buffer.concat(long);
|
|
const flatLongLen = Buffer.concat(long, 40);
|
|
|
|
assert.strictEqual(flatZero.length, 0);
|
|
assert.strictEqual(flatOne.toString(), 'asdf');
|
|
|
|
const check = new Array(10 + 1).join('asdf');
|
|
|
|
// A special case where concat used to return the first item,
|
|
// if the length is one. This check is to make sure that we don't do that.
|
|
assert.notStrictEqual(flatOne, one[0]);
|
|
assert.strictEqual(flatLong.toString(), check);
|
|
assert.strictEqual(flatLongLen.toString(), check);
|
|
|
|
assertWrongList();
|
|
assertWrongList(null);
|
|
assertWrongList(Buffer.from('hello'));
|
|
assertWrongList([42]);
|
|
assertWrongList(['hello', 'world']);
|
|
assertWrongList(['hello', Buffer.from('world')]);
|
|
|
|
function assertWrongList(value) {
|
|
assert.throws(() => {
|
|
Buffer.concat(value);
|
|
}, function(err) {
|
|
return err instanceof TypeError &&
|
|
err.message === '"list" argument must be an Array of Buffer ' +
|
|
'or Uint8Array instances';
|
|
});
|
|
}
|
|
|
|
const random10 = common.hasCrypto ?
|
|
require('crypto').randomBytes(10) :
|
|
Buffer.alloc(10, 1);
|
|
const empty = Buffer.alloc(0);
|
|
|
|
assert.notDeepStrictEqual(random10, empty);
|
|
assert.notDeepStrictEqual(random10, Buffer.alloc(10));
|
|
|
|
assert.deepStrictEqual(Buffer.concat([], 100), empty);
|
|
assert.deepStrictEqual(Buffer.concat([random10], 0), empty);
|
|
assert.deepStrictEqual(Buffer.concat([random10], 10), random10);
|
|
assert.deepStrictEqual(Buffer.concat([random10, random10], 10), random10);
|
|
assert.deepStrictEqual(Buffer.concat([empty, random10]), random10);
|
|
assert.deepStrictEqual(Buffer.concat([random10, empty, empty]), random10);
|
|
|
|
// The tail should be zero-filled
|
|
assert.deepStrictEqual(Buffer.concat([empty], 100), Buffer.alloc(100));
|
|
assert.deepStrictEqual(Buffer.concat([empty], 4096), Buffer.alloc(4096));
|
|
assert.deepStrictEqual(
|
|
Buffer.concat([random10], 40),
|
|
Buffer.concat([random10, Buffer.alloc(30)]));
|
|
|
|
assert.deepStrictEqual(Buffer.concat([new Uint8Array([0x41, 0x42]),
|
|
new Uint8Array([0x43, 0x44])]),
|
|
Buffer.from('ABCD'));
|
|
|