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1 //===- llvm/unittest/Support/Chrono.cpp - Time utilities tests ------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #include "llvm/Support/Chrono.h"
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11 #include "llvm/ADT/SmallVector.h"
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12 #include "llvm/Support/FormatVariadic.h"
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13 #include "gtest/gtest.h"
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14
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15 using namespace llvm;
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16 using namespace llvm::sys;
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17 using namespace std::chrono;
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18
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19 namespace {
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20
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21 TEST(Chrono, TimeTConversion) {
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22 EXPECT_EQ(time_t(0), toTimeT(toTimePoint(time_t(0))));
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23 EXPECT_EQ(time_t(1), toTimeT(toTimePoint(time_t(1))));
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24 EXPECT_EQ(time_t(47), toTimeT(toTimePoint(time_t(47))));
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25
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26 TimePoint<> TP;
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27 EXPECT_EQ(TP, toTimePoint(toTimeT(TP)));
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28 TP += seconds(1);
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29 EXPECT_EQ(TP, toTimePoint(toTimeT(TP)));
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30 TP += hours(47);
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31 EXPECT_EQ(TP, toTimePoint(toTimeT(TP)));
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32 }
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33
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34 TEST(Chrono, TimePointFormat) {
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35 using namespace std::chrono;
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36 struct tm TM {};
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37 TM.tm_year = 106;
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38 TM.tm_mon = 0;
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39 TM.tm_mday = 2;
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40 TM.tm_hour = 15;
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41 TM.tm_min = 4;
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42 TM.tm_sec = 5;
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43 TM.tm_isdst = -1;
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44 TimePoint<> T =
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45 system_clock::from_time_t(mktime(&TM)) + nanoseconds(123456789);
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46
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47 // operator<< uses the format YYYY-MM-DD HH:MM:SS.NNNNNNNNN
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48 std::string S;
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49 raw_string_ostream OS(S);
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50 OS << T;
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51 EXPECT_EQ("2006-01-02 15:04:05.123456789", OS.str());
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52
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53 // formatv default style matches operator<<.
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54 EXPECT_EQ("2006-01-02 15:04:05.123456789", formatv("{0}", T).str());
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55 // formatv supports strftime-style format strings.
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56 EXPECT_EQ("15:04:05", formatv("{0:%H:%M:%S}", T).str());
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57 // formatv supports our strftime extensions for sub-second precision.
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58 EXPECT_EQ("123", formatv("{0:%L}", T).str());
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59 EXPECT_EQ("123456", formatv("{0:%f}", T).str());
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60 EXPECT_EQ("123456789", formatv("{0:%N}", T).str());
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61 // our extensions don't interfere with %% escaping.
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62 EXPECT_EQ("%foo", formatv("{0:%%foo}", T).str());
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63 }
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64
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65 // Test that toTimePoint and toTimeT can be called with a arguments with varying
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66 // precisions.
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67 TEST(Chrono, ImplicitConversions) {
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68 std::time_t TimeT = 47;
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69 TimePoint<seconds> Sec = toTimePoint(TimeT);
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70 TimePoint<milliseconds> Milli = toTimePoint(TimeT);
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71 TimePoint<microseconds> Micro = toTimePoint(TimeT);
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72 TimePoint<nanoseconds> Nano = toTimePoint(TimeT);
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73 EXPECT_EQ(Sec, Milli);
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74 EXPECT_EQ(Sec, Micro);
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75 EXPECT_EQ(Sec, Nano);
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76 EXPECT_EQ(TimeT, toTimeT(Sec));
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77 EXPECT_EQ(TimeT, toTimeT(Milli));
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78 EXPECT_EQ(TimeT, toTimeT(Micro));
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79 EXPECT_EQ(TimeT, toTimeT(Nano));
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80 }
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81
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82 TEST(Chrono, DurationFormat) {
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83 EXPECT_EQ("1 h", formatv("{0}", hours(1)).str());
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84 EXPECT_EQ("1 m", formatv("{0}", minutes(1)).str());
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85 EXPECT_EQ("1 s", formatv("{0}", seconds(1)).str());
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86 EXPECT_EQ("1 ms", formatv("{0}", milliseconds(1)).str());
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87 EXPECT_EQ("1 us", formatv("{0}", microseconds(1)).str());
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88 EXPECT_EQ("1 ns", formatv("{0}", nanoseconds(1)).str());
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89
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90 EXPECT_EQ("1 s", formatv("{0:+}", seconds(1)).str());
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91 EXPECT_EQ("1", formatv("{0:-}", seconds(1)).str());
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92
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93 EXPECT_EQ("1000 ms", formatv("{0:ms}", seconds(1)).str());
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94 EXPECT_EQ("1000000 us", formatv("{0:us}", seconds(1)).str());
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95 EXPECT_EQ("1000", formatv("{0:ms-}", seconds(1)).str());
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96
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97 EXPECT_EQ("1,000 ms", formatv("{0:+n}", milliseconds(1000)).str());
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98 EXPECT_EQ("0x3e8", formatv("{0:-x}", milliseconds(1000)).str());
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99 EXPECT_EQ("010", formatv("{0:-3}", milliseconds(10)).str());
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100 EXPECT_EQ("10,000", formatv("{0:ms-n}", seconds(10)).str());
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101
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102 EXPECT_EQ("1.00 s", formatv("{0}", duration<float>(1)).str());
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103 EXPECT_EQ("0.123 s", formatv("{0:+3}", duration<float>(0.123f)).str());
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104 EXPECT_EQ("1.230e-01 s", formatv("{0:+e3}", duration<float>(0.123f)).str());
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105
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106 typedef duration<float, std::ratio<60 * 60 * 24 * 14, 1000000>>
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107 microfortnights;
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108 EXPECT_EQ("1.00", formatv("{0:-}", microfortnights(1)).str());
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109 EXPECT_EQ("1209.60 ms", formatv("{0:ms}", microfortnights(1)).str());
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110 }
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111
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112 } // anonymous namespace
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