| 1 | //===-- Unittests for clock_gettime ---------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/time/clock_gettime.h" |
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| 10 | #include "test/UnitTest/Test.h" |
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| 11 | |
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| 12 | #include <time.h> |
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| 13 | |
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| 14 | TEST(LlvmLibcClockGetTime, RealTime) { |
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| 15 | struct timespec tp; |
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| 16 | int result; |
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| 17 | result = LIBC_NAMESPACE::clock_gettime(CLOCK_REALTIME, tp: &tp); |
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| 18 | ASSERT_EQ(result, 0); |
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| 19 | ASSERT_GT(tp.tv_sec, time_t(0)); |
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| 20 | } |
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| 21 | |
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| 22 | #ifdef CLOCK_MONOTONIC |
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| 23 | TEST(LlvmLibcClockGetTime, MonotonicTime) { |
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| 24 | struct timespec tp1, tp2; |
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| 25 | int result; |
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| 26 | result = LIBC_NAMESPACE::clock_gettime(CLOCK_MONOTONIC, tp: &tp1); |
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| 27 | ASSERT_EQ(result, 0); |
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| 28 | ASSERT_GT(tp1.tv_sec, time_t(0)); |
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| 29 | result = LIBC_NAMESPACE::clock_gettime(CLOCK_MONOTONIC, tp: &tp2); |
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| 30 | ASSERT_EQ(result, 0); |
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| 31 | ASSERT_GE(tp2.tv_sec, tp1.tv_sec); // The monotonic clock should increase. |
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| 32 | if (tp2.tv_sec == tp1.tv_sec) { |
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| 33 | ASSERT_GE(tp2.tv_nsec, tp1.tv_nsec); |
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| 34 | } |
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| 35 | } |
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| 36 | #endif // CLOCK_MONOTONIC |
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| 37 | |
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