| 1 | //===-- unit tests for linux's timeout utilities --------------------------===// |
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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/__support/CPP/expected.h" |
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| 10 | #include "src/__support/time/linux/abs_timeout.h" |
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| 11 | #include "src/__support/time/linux/monotonicity.h" |
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| 12 | #include "test/UnitTest/Test.h" |
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| 13 | |
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| 14 | template <class T, class E> |
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| 15 | using expected = LIBC_NAMESPACE::cpp::expected<T, E>; |
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| 16 | using AbsTimeout = LIBC_NAMESPACE::internal::AbsTimeout; |
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| 17 | |
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| 18 | TEST(LlvmLibcSupportLinuxTimeoutTest, NegativeSecond) { |
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| 19 | timespec ts = {-1, 0}; |
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| 20 | expected<AbsTimeout, AbsTimeout::Error> result = |
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| 21 | AbsTimeout::from_timespec(ts, false); |
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| 22 | ASSERT_FALSE(result.has_value()); |
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| 23 | ASSERT_EQ(result.error(), AbsTimeout::Error::BeforeEpoch); |
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| 24 | } |
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| 25 | TEST(LlvmLibcSupportLinuxTimeoutTest, OverflowNano) { |
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| 26 | using namespace LIBC_NAMESPACE::time_units; |
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| 27 | timespec ts = {0, 2_s_ns}; |
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| 28 | expected<AbsTimeout, AbsTimeout::Error> result = |
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| 29 | AbsTimeout::from_timespec(ts, false); |
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| 30 | ASSERT_FALSE(result.has_value()); |
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| 31 | ASSERT_EQ(result.error(), AbsTimeout::Error::Invalid); |
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| 32 | } |
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| 33 | TEST(LlvmLibcSupportLinuxTimeoutTest, UnderflowNano) { |
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| 34 | timespec ts = {0, -1}; |
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| 35 | expected<AbsTimeout, AbsTimeout::Error> result = |
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| 36 | AbsTimeout::from_timespec(ts, false); |
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| 37 | ASSERT_FALSE(result.has_value()); |
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| 38 | ASSERT_EQ(result.error(), AbsTimeout::Error::Invalid); |
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| 39 | } |
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| 40 | TEST(LlvmLibcSupportLinuxTimeoutTest, NoChangeIfClockIsMonotonic) { |
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| 41 | timespec ts = {10000, 0}; |
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| 42 | expected<AbsTimeout, AbsTimeout::Error> result = |
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| 43 | AbsTimeout::from_timespec(ts, false); |
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| 44 | ASSERT_TRUE(result.has_value()); |
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| 45 | ensure_monotonicity(*result); |
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| 46 | ASSERT_FALSE(result->is_realtime()); |
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| 47 | ASSERT_EQ(result->get_timespec().tv_sec, static_cast<time_t>(10000)); |
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| 48 | ASSERT_EQ(result->get_timespec().tv_nsec, static_cast<long int>(0)); |
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| 49 | } |
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| 50 | TEST(LlvmLibcSupportLinuxTimeoutTest, ValidAfterConversion) { |
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| 51 | timespec ts; |
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| 52 | LIBC_NAMESPACE::internal::clock_gettime(CLOCK_REALTIME, &ts); |
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| 53 | expected<AbsTimeout, AbsTimeout::Error> result = |
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| 54 | AbsTimeout::from_timespec(ts, true); |
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| 55 | ASSERT_TRUE(result.has_value()); |
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| 56 | ensure_monotonicity(*result); |
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| 57 | ASSERT_FALSE(result->is_realtime()); |
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| 58 | ASSERT_TRUE( |
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| 59 | AbsTimeout::from_timespec(result->get_timespec(), false).has_value()); |
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| 60 | } |
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| 61 | |
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