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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "gtest/gtest.h"
#include "TimeUnits.h"
#include <algorithm>
#include <vector>
using namespace mozilla;
using namespace mozilla::media;
TEST(TimeUnit, Rounding)
{
int64_t usecs = 66261715;
double seconds = media::TimeUnit::FromMicroseconds(usecs).ToSeconds();
EXPECT_EQ(media::TimeUnit::FromSeconds(seconds).ToMicroseconds(), usecs);
seconds = 4.169470;
usecs = 4169470;
EXPECT_EQ(media::TimeUnit::FromSeconds(seconds).ToMicroseconds(), usecs);
}
TEST(TimeUnit, InfinityMath)
{
// Operator plus/minus uses floating point behaviour for positive and
// negative infinity values, i.e.:
// posInf + posInf = inf
// posInf + negInf = -nan
// posInf + finite = inf
// posInf - posInf = -nan
// posInf - negInf = inf
// posInf - finite = inf
// negInf + negInf = -inf
// negInf + posInf = -nan
// negInf + finite = -inf
// negInf - negInf = -nan
// negInf - posInf = -inf
// negInf - finite = -inf
// finite + posInf = inf
// finite - posInf = -inf
// finite + negInf = -inf
// finite - negInf = inf
const TimeUnit posInf = TimeUnit::FromInfinity();
EXPECT_EQ(TimeUnit::FromSeconds(mozilla::PositiveInfinity<double>()), posInf);
const TimeUnit negInf = TimeUnit::FromNegativeInfinity();
EXPECT_EQ(TimeUnit::FromSeconds(mozilla::NegativeInfinity<double>()), negInf);
EXPECT_EQ(posInf + posInf, posInf);
EXPECT_FALSE((posInf + negInf).IsValid());
EXPECT_FALSE((posInf - posInf).IsValid());
EXPECT_EQ(posInf - negInf, posInf);
EXPECT_EQ(negInf + negInf, negInf);
EXPECT_FALSE((negInf + posInf).IsValid());
EXPECT_FALSE((negInf - negInf).IsValid());
EXPECT_EQ(negInf - posInf, negInf);
const TimeUnit finite = TimeUnit::FromSeconds(42.0);
EXPECT_EQ(posInf - finite, posInf);
EXPECT_EQ(posInf + finite, posInf);
EXPECT_EQ(negInf - finite, negInf);
EXPECT_EQ(negInf + finite, negInf);
EXPECT_EQ(finite + posInf, posInf);
EXPECT_EQ(finite - posInf, negInf);
EXPECT_EQ(finite + negInf, negInf);
EXPECT_EQ(finite - negInf, posInf);
}
|
