summaryrefslogtreecommitdiff
path: root/test/parallel/test-buffer-compare.js
blob: e2bd1380d2ce15f6826a50a263d394879926cb7d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
'use strict';

const common = require('../common');
const assert = require('assert');

const b = Buffer.alloc(1, 'a');
const c = Buffer.alloc(1, 'c');
const d = Buffer.alloc(2, 'aa');
const e = new Uint8Array([ 0x61, 0x61 ]); // ASCII 'aa', same as d

assert.strictEqual(b.compare(c), -1);
assert.strictEqual(c.compare(d), 1);
assert.strictEqual(d.compare(b), 1);
assert.strictEqual(d.compare(e), 0);
assert.strictEqual(b.compare(d), -1);
assert.strictEqual(b.compare(b), 0);

assert.strictEqual(Buffer.compare(b, c), -1);
assert.strictEqual(Buffer.compare(c, d), 1);
assert.strictEqual(Buffer.compare(d, b), 1);
assert.strictEqual(Buffer.compare(b, d), -1);
assert.strictEqual(Buffer.compare(c, c), 0);
assert.strictEqual(Buffer.compare(e, e), 0);
assert.strictEqual(Buffer.compare(d, e), 0);
assert.strictEqual(Buffer.compare(d, b), 1);

assert.strictEqual(Buffer.compare(Buffer.alloc(0), Buffer.alloc(0)), 0);
assert.strictEqual(Buffer.compare(Buffer.alloc(0), Buffer.alloc(1)), -1);
assert.strictEqual(Buffer.compare(Buffer.alloc(1), Buffer.alloc(0)), 1);

assert.throws(() => Buffer.compare(Buffer.alloc(1), 'abc'), {
  code: 'ERR_INVALID_ARG_TYPE',
  message: 'The "buf2" argument must be one of type Buffer or Uint8Array. ' +
           'Received type string'
});
assert.throws(() => Buffer.compare('abc', Buffer.alloc(1)), {
  code: 'ERR_INVALID_ARG_TYPE',
  message: 'The "buf1" argument must be one of type Buffer or Uint8Array. ' +
           'Received type string'
});

common.expectsError(() => Buffer.alloc(1).compare('abc'), {
  code: 'ERR_INVALID_ARG_TYPE',
  type: TypeError,
  message: 'The "target" argument must be one of ' +
           'type Buffer or Uint8Array. Received type string'
});