1 //===-- Unittests for clock_getres- ---------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "hdr/time_macros.h"
10 #include "src/time/clock_getres.h"
11 #include "test/UnitTest/ErrnoSetterMatcher.h"
12 #include "test/UnitTest/Test.h"
13
14 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
15 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
16
TEST(LlvmLibcClockGetRes,Invalid)17 TEST(LlvmLibcClockGetRes, Invalid) {
18 timespec tp;
19 EXPECT_THAT(LIBC_NAMESPACE::clock_getres(-1, &tp), Fails(EINVAL));
20 }
21
TEST(LlvmLibcClockGetRes,NullSpec)22 TEST(LlvmLibcClockGetRes, NullSpec) {
23 EXPECT_THAT(LIBC_NAMESPACE::clock_getres(CLOCK_REALTIME, nullptr),
24 Succeeds());
25 }
26
TEST(LlvmLibcClockGetRes,Realtime)27 TEST(LlvmLibcClockGetRes, Realtime) {
28 timespec tp;
29 EXPECT_THAT(LIBC_NAMESPACE::clock_getres(CLOCK_REALTIME, &tp), Succeeds());
30 EXPECT_GE(tp.tv_sec, static_cast<decltype(tp.tv_sec)>(0));
31 EXPECT_GE(tp.tv_nsec, static_cast<decltype(tp.tv_nsec)>(0));
32 }
33
TEST(LlvmLibcClockGetRes,Monotonic)34 TEST(LlvmLibcClockGetRes, Monotonic) {
35 timespec tp;
36 ASSERT_THAT(LIBC_NAMESPACE::clock_getres(CLOCK_MONOTONIC, &tp), Succeeds());
37 EXPECT_GE(tp.tv_sec, static_cast<decltype(tp.tv_sec)>(0));
38 EXPECT_GE(tp.tv_nsec, static_cast<decltype(tp.tv_nsec)>(0));
39 }
40
TEST(LlvmLibcClockGetRes,ProcessCpuTime)41 TEST(LlvmLibcClockGetRes, ProcessCpuTime) {
42 timespec tp;
43 ASSERT_THAT(LIBC_NAMESPACE::clock_getres(CLOCK_PROCESS_CPUTIME_ID, &tp),
44 Succeeds());
45 EXPECT_GE(tp.tv_sec, static_cast<decltype(tp.tv_sec)>(0));
46 EXPECT_GE(tp.tv_nsec, static_cast<decltype(tp.tv_nsec)>(0));
47 }
48
TEST(LlvmLibcClockGetRes,ThreadCpuTime)49 TEST(LlvmLibcClockGetRes, ThreadCpuTime) {
50 timespec tp;
51 ASSERT_THAT(LIBC_NAMESPACE::clock_getres(CLOCK_THREAD_CPUTIME_ID, &tp),
52 Succeeds());
53 EXPECT_GE(tp.tv_sec, static_cast<decltype(tp.tv_sec)>(0));
54 EXPECT_GE(tp.tv_nsec, static_cast<decltype(tp.tv_nsec)>(0));
55 }
56