1 | // Copyright 2013 The Flutter Authors. All rights reserved. |
2 | // Use of this source code is governed by a BSD-style license that can be |
3 | // found in the LICENSE file. |
4 | |
5 | #include <thread> |
6 | |
7 | #include "flutter/fml/time/time_delta.h" |
8 | #include "flutter/fml/time/time_point.h" |
9 | #include "gtest/gtest.h" |
10 | |
11 | namespace fml { |
12 | namespace { |
13 | |
14 | TEST(Time, Now) { |
15 | auto start = TimePoint::Now(); |
16 | for (int i = 0; i < 3; ++i) { |
17 | auto now = TimePoint::Now(); |
18 | EXPECT_GE(now, start); |
19 | std::this_thread::yield(); |
20 | } |
21 | } |
22 | |
23 | TEST(Time, IntConversions) { |
24 | // Integer conversions should all truncate, not round. |
25 | TimeDelta delta = TimeDelta::FromNanoseconds(102304506708ll); |
26 | EXPECT_EQ(102304506708ll, delta.ToNanoseconds()); |
27 | EXPECT_EQ(102304506ll, delta.ToMicroseconds()); |
28 | EXPECT_EQ(102304ll, delta.ToMilliseconds()); |
29 | EXPECT_EQ(102ll, delta.ToSeconds()); |
30 | } |
31 | |
32 | TEST(Time, FloatConversions) { |
33 | // Float conversions should remain close to the original value. |
34 | TimeDelta delta = TimeDelta::FromNanoseconds(102304506708ll); |
35 | EXPECT_FLOAT_EQ(102304506708.0, delta.ToNanosecondsF()); |
36 | EXPECT_FLOAT_EQ(102304506.708, delta.ToMicrosecondsF()); |
37 | EXPECT_FLOAT_EQ(102304.506708, delta.ToMillisecondsF()); |
38 | EXPECT_FLOAT_EQ(102.304506708, delta.ToSecondsF()); |
39 | } |
40 | |
41 | TEST(Time, TimespecConversions) { |
42 | struct timespec ts; |
43 | ts.tv_sec = 5; |
44 | ts.tv_nsec = 7; |
45 | TimeDelta from_timespec = TimeDelta::FromTimespec(ts); |
46 | EXPECT_EQ(5, from_timespec.ToSeconds()); |
47 | EXPECT_EQ(5 * 1000000000ll + 7, from_timespec.ToNanoseconds()); |
48 | struct timespec to_timespec = from_timespec.ToTimespec(); |
49 | EXPECT_EQ(ts.tv_sec, to_timespec.tv_sec); |
50 | EXPECT_EQ(ts.tv_nsec, to_timespec.tv_nsec); |
51 | } |
52 | |
53 | } // namespace |
54 | } // namespace fml |
55 | |