1'use strict';
2
3require('../common');
4const assert = require('assert');
5
6const b = Buffer.alloc(1, 'a');
7const c = Buffer.alloc(1, 'c');
8const d = Buffer.alloc(2, 'aa');
9const e = new Uint8Array([ 0x61, 0x61 ]); // ASCII 'aa', same as d
10
11assert.strictEqual(b.compare(c), -1);
12assert.strictEqual(c.compare(d), 1);
13assert.strictEqual(d.compare(b), 1);
14assert.strictEqual(d.compare(e), 0);
15assert.strictEqual(b.compare(d), -1);
16assert.strictEqual(b.compare(b), 0);
17
18assert.strictEqual(Buffer.compare(b, c), -1);
19assert.strictEqual(Buffer.compare(c, d), 1);
20assert.strictEqual(Buffer.compare(d, b), 1);
21assert.strictEqual(Buffer.compare(b, d), -1);
22assert.strictEqual(Buffer.compare(c, c), 0);
23assert.strictEqual(Buffer.compare(e, e), 0);
24assert.strictEqual(Buffer.compare(d, e), 0);
25assert.strictEqual(Buffer.compare(d, b), 1);
26
27assert.strictEqual(Buffer.compare(Buffer.alloc(0), Buffer.alloc(0)), 0);
28assert.strictEqual(Buffer.compare(Buffer.alloc(0), Buffer.alloc(1)), -1);
29assert.strictEqual(Buffer.compare(Buffer.alloc(1), Buffer.alloc(0)), 1);
30
31assert.throws(() => Buffer.compare(Buffer.alloc(1), 'abc'), {
32  code: 'ERR_INVALID_ARG_TYPE',
33  message: 'The "buf2" argument must be an instance of Buffer or Uint8Array. ' +
34           "Received type string ('abc')"
35});
36assert.throws(() => Buffer.compare('abc', Buffer.alloc(1)), {
37  code: 'ERR_INVALID_ARG_TYPE',
38  message: 'The "buf1" argument must be an instance of Buffer or Uint8Array. ' +
39           "Received type string ('abc')"
40});
41
42assert.throws(() => Buffer.alloc(1).compare('abc'), {
43  code: 'ERR_INVALID_ARG_TYPE',
44  name: 'TypeError',
45  message: 'The "target" argument must be an instance of ' +
46           "Buffer or Uint8Array. Received type string ('abc')"
47});
48