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