1// Flags: --expose-internals
2'use strict';
3
4require('../common');
5const assert = require('assert');
6const { convertToInt, evenRound } = require('internal/webidl');
7
8assert.strictEqual(evenRound(-0.5), 0);
9assert.strictEqual(evenRound(0.5), 0);
10assert.strictEqual(evenRound(-1.5), -2);
11assert.strictEqual(evenRound(1.5), 2);
12assert.strictEqual(evenRound(3.4), 3);
13assert.strictEqual(evenRound(4.6), 5);
14assert.strictEqual(evenRound(5), 5);
15assert.strictEqual(evenRound(6), 6);
16
17// https://webidl.spec.whatwg.org/#abstract-opdef-converttoint
18assert.strictEqual(convertToInt('x', 0, 64), 0);
19assert.strictEqual(convertToInt('x', 1, 64), 1);
20assert.strictEqual(convertToInt('x', -0.5, 64), 0);
21assert.strictEqual(convertToInt('x', -0.5, 64, { signed: true }), 0);
22assert.strictEqual(convertToInt('x', -1.5, 64, { signed: true }), -1);
23
24// EnforceRange
25const OutOfRangeValues = [ NaN, Infinity, -Infinity, 2 ** 53, -(2 ** 53) ];
26for (const value of OutOfRangeValues) {
27  assert.throws(() => convertToInt('x', value, 64, { enforceRange: true }), {
28    name: 'TypeError',
29    code: 'ERR_INVALID_ARG_VALUE',
30  });
31}
32
33// Out of range: clamp
34assert.strictEqual(convertToInt('x', NaN, 64, { clamp: true }), 0);
35assert.strictEqual(convertToInt('x', Infinity, 64, { clamp: true }), Number.MAX_SAFE_INTEGER);
36assert.strictEqual(convertToInt('x', -Infinity, 64, { clamp: true }), 0);
37assert.strictEqual(convertToInt('x', -Infinity, 64, { signed: true, clamp: true }), Number.MIN_SAFE_INTEGER);
38assert.strictEqual(convertToInt('x', 0x1_0000_0000, 32, { clamp: true }), 0xFFFF_FFFF);
39assert.strictEqual(convertToInt('x', 0xFFFF_FFFF, 32, { clamp: true }), 0xFFFF_FFFF);
40assert.strictEqual(convertToInt('x', 0x8000_0000, 32, { clamp: true, signed: true }), 0x7FFF_FFFF);
41assert.strictEqual(convertToInt('x', 0xFFFF_FFFF, 32, { clamp: true, signed: true }), 0x7FFF_FFFF);
42assert.strictEqual(convertToInt('x', 0.5, 64, { clamp: true }), 0);
43assert.strictEqual(convertToInt('x', 1.5, 64, { clamp: true }), 2);
44assert.strictEqual(convertToInt('x', -0.5, 64, { clamp: true }), 0);
45assert.strictEqual(convertToInt('x', -0.5, 64, { signed: true, clamp: true }), 0);
46assert.strictEqual(convertToInt('x', -1.5, 64, { signed: true, clamp: true }), -2);
47
48// Out of range, step 8.
49assert.strictEqual(convertToInt('x', NaN, 64), 0);
50assert.strictEqual(convertToInt('x', Infinity, 64), 0);
51assert.strictEqual(convertToInt('x', -Infinity, 64), 0);
52assert.strictEqual(convertToInt('x', 0x1_0000_0000, 32), 0);
53assert.strictEqual(convertToInt('x', 0x1_0000_0001, 32), 1);
54assert.strictEqual(convertToInt('x', 0xFFFF_FFFF, 32), 0xFFFF_FFFF);
55
56// Out of range, step 11.
57assert.strictEqual(convertToInt('x', 0x8000_0000, 32, { signed: true }), -0x8000_0000);
58assert.strictEqual(convertToInt('x', 0xFFF_FFFF, 32, { signed: true }), 0xFFF_FFFF);
59