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/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(t: mktime(tp: &TM)) + nanoseconds(123456789);
44 TimePoint<> T2 =
45 system_clock::from_time_t(t: mktime(tp: &TM)) + nanoseconds(23456789);
46
47 // operator<< uses the format YYYY-MM-DD HH:MM:SS.NNNNNNNNN
48 std::string S;
49 raw_string_ostream OS(S);
50 OS << T;
51 EXPECT_EQ("2006-01-02 15:04:05.123456789", OS.str());
52 S.clear();
53 OS << T2;
54 EXPECT_EQ("2006-01-02 15:04:05.023456789", OS.str());
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 varying
70// precisions.
71TEST(Chrono, ImplicitConversions) {
72 std::time_t TimeT = 47;
73 TimePoint<seconds> Sec = toTimePoint(T: TimeT);
74 TimePoint<milliseconds> Milli = toTimePoint(T: TimeT);
75 TimePoint<microseconds> Micro = toTimePoint(T: TimeT);
76 TimePoint<nanoseconds> Nano = toTimePoint(T: 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 namespace
117

source code of llvm/unittests/Support/Chrono.cpp