61 lines · cpp
1//===-- unit tests for linux's timeout utilities --------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/__support/CPP/expected.h"10#include "src/__support/time/linux/abs_timeout.h"11#include "src/__support/time/linux/monotonicity.h"12#include "test/UnitTest/Test.h"13 14template <class T, class E>15using expected = LIBC_NAMESPACE::cpp::expected<T, E>;16using AbsTimeout = LIBC_NAMESPACE::internal::AbsTimeout;17 18TEST(LlvmLibcSupportLinuxTimeoutTest, NegativeSecond) {19 timespec ts = {-1, 0};20 expected<AbsTimeout, AbsTimeout::Error> result =21 AbsTimeout::from_timespec(ts, false);22 ASSERT_FALSE(result.has_value());23 ASSERT_EQ(result.error(), AbsTimeout::Error::BeforeEpoch);24}25TEST(LlvmLibcSupportLinuxTimeoutTest, OverflowNano) {26 using namespace LIBC_NAMESPACE::time_units;27 timespec ts = {0, 2_s_ns};28 expected<AbsTimeout, AbsTimeout::Error> result =29 AbsTimeout::from_timespec(ts, false);30 ASSERT_FALSE(result.has_value());31 ASSERT_EQ(result.error(), AbsTimeout::Error::Invalid);32}33TEST(LlvmLibcSupportLinuxTimeoutTest, UnderflowNano) {34 timespec ts = {0, -1};35 expected<AbsTimeout, AbsTimeout::Error> result =36 AbsTimeout::from_timespec(ts, false);37 ASSERT_FALSE(result.has_value());38 ASSERT_EQ(result.error(), AbsTimeout::Error::Invalid);39}40TEST(LlvmLibcSupportLinuxTimeoutTest, NoChangeIfClockIsMonotonic) {41 timespec ts = {10000, 0};42 expected<AbsTimeout, AbsTimeout::Error> result =43 AbsTimeout::from_timespec(ts, false);44 ASSERT_TRUE(result.has_value());45 ensure_monotonicity(*result);46 ASSERT_FALSE(result->is_realtime());47 ASSERT_EQ(result->get_timespec().tv_sec, static_cast<time_t>(10000));48 ASSERT_EQ(result->get_timespec().tv_nsec, static_cast<long int>(0));49}50TEST(LlvmLibcSupportLinuxTimeoutTest, ValidAfterConversion) {51 timespec ts;52 LIBC_NAMESPACE::internal::clock_gettime(CLOCK_REALTIME, &ts);53 expected<AbsTimeout, AbsTimeout::Error> result =54 AbsTimeout::from_timespec(ts, true);55 ASSERT_TRUE(result.has_value());56 ensure_monotonicity(*result);57 ASSERT_FALSE(result->is_realtime());58 ASSERT_TRUE(59 AbsTimeout::from_timespec(result->get_timespec(), false).has_value());60}61