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1//===- llvm/unittest/Support/Chrono.cpp - Time utilities tests ------------===//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 "llvm/Support/Chrono.h"10#include "llvm/Support/FormatVariadic.h"11#include "gtest/gtest.h"12 13using namespace llvm;14using namespace llvm::sys;15using namespace std::chrono;16 17namespace {18 19TEST(Chrono, TimeTConversion) {20  EXPECT_EQ(time_t(0), toTimeT(toTimePoint(time_t(0))));21  EXPECT_EQ(time_t(1), toTimeT(toTimePoint(time_t(1))));22  EXPECT_EQ(time_t(47), toTimeT(toTimePoint(time_t(47))));23 24  TimePoint<> TP;25  EXPECT_EQ(TP, toTimePoint(toTimeT(TP)));26  TP += seconds(1);27  EXPECT_EQ(TP, toTimePoint(toTimeT(TP)));28  TP += hours(47);29  EXPECT_EQ(TP, toTimePoint(toTimeT(TP)));30}31 32TEST(Chrono, TimePointFormat) {33  using namespace std::chrono;34  struct tm TM {};35  TM.tm_year = 106;36  TM.tm_mon = 0;37  TM.tm_mday = 2;38  TM.tm_hour = 15;39  TM.tm_min = 4;40  TM.tm_sec = 5;41  TM.tm_isdst = -1;42  TimePoint<> T =43      system_clock::from_time_t(mktime(&TM)) + nanoseconds(123456789);44  TimePoint<> T2 =45      system_clock::from_time_t(mktime(&TM)) + nanoseconds(23456789);46 47  // operator<< uses the format YYYY-MM-DD HH:MM:SS.NNNNNNNNN48  std::string S;49  raw_string_ostream OS(S);50  OS << T;51  EXPECT_EQ("2006-01-02 15:04:05.123456789", S);52  S.clear();53  OS << T2;54  EXPECT_EQ("2006-01-02 15:04:05.023456789", S);55 56  // formatv default style matches operator<<.57  EXPECT_EQ("2006-01-02 15:04:05.123456789", formatv("{0}", T).str());58  EXPECT_EQ("2006-01-02 15:04:05.023456789", formatv("{0}", T2).str());59  // formatv supports strftime-style format strings.60  EXPECT_EQ("15:04:05", formatv("{0:%H:%M:%S}", T).str());61  // formatv supports our strftime extensions for sub-second precision.62  EXPECT_EQ("123", formatv("{0:%L}", T).str());63  EXPECT_EQ("123456", formatv("{0:%f}", T).str());64  EXPECT_EQ("123456789", formatv("{0:%N}", T).str());65  // our extensions don't interfere with %% escaping.66  EXPECT_EQ("%foo", formatv("{0:%%foo}", T).str());67}68 69// Test that toTimePoint and toTimeT can be called with a arguments with varying70// precisions.71TEST(Chrono, ImplicitConversions) {72  std::time_t TimeT = 47;73  TimePoint<seconds> Sec = toTimePoint(TimeT);74  TimePoint<milliseconds> Milli = toTimePoint(TimeT);75  TimePoint<microseconds> Micro = toTimePoint(TimeT);76  TimePoint<nanoseconds> Nano = toTimePoint(TimeT);77  EXPECT_EQ(Sec, Milli);78  EXPECT_EQ(Sec, Micro);79  EXPECT_EQ(Sec, Nano);80  EXPECT_EQ(TimeT, toTimeT(Sec));81  EXPECT_EQ(TimeT, toTimeT(Milli));82  EXPECT_EQ(TimeT, toTimeT(Micro));83  EXPECT_EQ(TimeT, toTimeT(Nano));84}85 86TEST(Chrono, DurationFormat) {87  EXPECT_EQ("1 h", formatv("{0}", hours(1)).str());88  EXPECT_EQ("1 m", formatv("{0}", minutes(1)).str());89  EXPECT_EQ("1 s", formatv("{0}", seconds(1)).str());90  EXPECT_EQ("1 ms", formatv("{0}", milliseconds(1)).str());91  EXPECT_EQ("1 us", formatv("{0}", microseconds(1)).str());92  EXPECT_EQ("1 ns", formatv("{0}", nanoseconds(1)).str());93 94  EXPECT_EQ("1 s", formatv("{0:+}", seconds(1)).str());95  EXPECT_EQ("1", formatv("{0:-}", seconds(1)).str());96 97  EXPECT_EQ("1000 ms", formatv("{0:ms}", seconds(1)).str());98  EXPECT_EQ("1000000 us", formatv("{0:us}", seconds(1)).str());99  EXPECT_EQ("1000", formatv("{0:ms-}", seconds(1)).str());100 101  EXPECT_EQ("1,000 ms", formatv("{0:+n}", milliseconds(1000)).str());102  EXPECT_EQ("0x3e8", formatv("{0:-x}", milliseconds(1000)).str());103  EXPECT_EQ("010", formatv("{0:-3}", milliseconds(10)).str());104  EXPECT_EQ("10,000", formatv("{0:ms-n}", seconds(10)).str());105 106  EXPECT_EQ("1.00 s", formatv("{0}", duration<float>(1)).str());107  EXPECT_EQ("0.123 s", formatv("{0:+3}", duration<float>(0.123f)).str());108  EXPECT_EQ("1.230e-01 s", formatv("{0:+e3}", duration<float>(0.123f)).str());109 110  typedef duration<float, std::ratio<60 * 60 * 24 * 14, 1000000>>111      microfortnights;112  EXPECT_EQ("1.00", formatv("{0:-}", microfortnights(1)).str());113  EXPECT_EQ("1209.60 ms", formatv("{0:ms}", microfortnights(1)).str());114}115 116} // anonymous namespace117