// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package time_test
import (
"bytes"
"encoding/gob"
"encoding/json"
"fmt"
"internal/race"
"math/big"
"math/rand"
"os"
"runtime"
"strings"
"sync"
"testing"
"testing/quick"
. "time"
)
// We should be in PST/PDT, but if the time zone files are missing we
// won't be. The purpose of this test is to at least explain why some of
// the subsequent tests fail.
func TestZoneData(t *testing.T) {
lt := Now()
// PST is 8 hours west, PDT is 7 hours west. We could use the name but it's not unique.
if name, off := lt.Zone(); off != -8*60*60 && off != -7*60*60 {
t.Errorf("Unable to find US Pacific time zone data for testing; time zone is %q offset %d", name, off)
t.Error("Likely problem: the time zone files have not been installed.")
}
}
// parsedTime is the struct representing a parsed time value.
type parsedTime struct {
Year int
Month Month
Day int
Hour, Minute, Second int // 15:04:05 is 15, 4, 5.
Nanosecond int // Fractional second.
Weekday Weekday
ZoneOffset int // seconds east of UTC, e.g. -7*60*60 for -0700
Zone string // e.g., "MST"
}
type TimeTest struct {
seconds int64
golden parsedTime
}
var utctests = []TimeTest{
{0, parsedTime{1970, January, 1, 0, 0, 0, 0, Thursday, 0, "UTC"}},
{1221681866, parsedTime{2008, September, 17, 20, 4, 26, 0, Wednesday, 0, "UTC"}},
{-1221681866, parsedTime{1931, April, 16, 3, 55, 34, 0, Thursday, 0, "UTC"}},
{-11644473600, parsedTime{1601, January, 1, 0, 0, 0, 0, Monday, 0, "UTC"}},
{599529660, parsedTime{1988, December, 31, 0, 1, 0, 0, Saturday, 0, "UTC"}},
{978220860, parsedTime{2000, December, 31, 0, 1, 0, 0, Sunday, 0, "UTC"}},
}
var nanoutctests = []TimeTest{
{0, parsedTime{1970, January, 1, 0, 0, 0, 1e8, Thursday, 0, "UTC"}},
{1221681866, parsedTime{2008, September, 17, 20, 4, 26, 2e8, Wednesday, 0, "UTC"}},
}
var localtests = []TimeTest{
{0, parsedTime{1969, December, 31, 16, 0, 0, 0, Wednesday, -8 * 60 * 60, "PST"}},
{1221681866, parsedTime{2008, September, 17, 13, 4, 26, 0, Wednesday, -7 * 60 * 60, "PDT"}},
}
var nanolocaltests = []TimeTest{
{0, parsedTime{1969, December, 31, 16, 0, 0, 1e8, Wednesday, -8 * 60 * 60, "PST"}},
{1221681866, parsedTime{2008, September, 17, 13, 4, 26, 3e8, Wednesday, -7 * 60 * 60, "PDT"}},
}
func same(t Time, u *parsedTime) bool {
// Check aggregates.
year, month, day := t.Date()
hour, min, sec := t.Clock()
name, offset := t.Zone()
if year != u.Year || month != u.Month || day != u.Day ||
hour != u.Hour || min != u.Minute || sec != u.Second ||
name != u.Zone || offset != u.ZoneOffset {
return false
}
// Check individual entries.
return t.Year() == u.Year &&
t.Month() == u.Month &&
t.Day() == u.Day &&
t.Hour() == u.Hour &&
t.Minute() == u.Minute &&
t.Second() == u.Second &&
t.Nanosecond() == u.Nanosecond &&
t.Weekday() == u.Weekday
}
func TestSecondsToUTC(t *testing.T) {
for _, test := range utctests {
sec := test.seconds
golden := &test.golden
tm := Unix(sec, 0).UTC()
newsec := tm.Unix()
if newsec != sec {
t.Errorf("SecondsToUTC(%d).Seconds() = %d", sec, newsec)
}
if !same(tm, golden) {
t.Errorf("SecondsToUTC(%d): // %#v", sec, tm)
t.Errorf(" want=%+v", *golden)
t.Errorf(" have=%v", tm.Format(RFC3339+" MST"))
}
}
}
func TestNanosecondsToUTC(t *testing.T) {
for _, test := range nanoutctests {
golden := &test.golden
nsec := test.seconds*1e9 + int64(golden.Nanosecond)
tm := Unix(0, nsec).UTC()
newnsec := tm.Unix()*1e9 + int64(tm.Nanosecond())
if newnsec != nsec {
t.Errorf("NanosecondsToUTC(%d).Nanoseconds() = %d", nsec, newnsec)
}
if !same(tm, golden) {
t.Errorf("NanosecondsToUTC(%d):", nsec)
t.Errorf(" want=%+v", *golden)
t.Errorf(" have=%+v", tm.Format(RFC3339+" MST"))
}
}
}
func TestSecondsToLocalTime(t *testing.T) {
for _, test := range localtests {
sec := test.seconds
golden := &test.golden
tm := Unix(sec, 0)
newsec := tm.Unix()
if newsec != sec {
t.Errorf("SecondsToLocalTime(%d).Seconds() = %d", sec, newsec)
}
if !same(tm, golden) {
t.Errorf("SecondsToLocalTime(%d):", sec)
t.Errorf(" want=%+v", *golden)
t.Errorf(" have=%+v", tm.Format(RFC3339+" MST"))
}
}
}
func TestNanosecondsToLocalTime(t *testing.T) {
for _, test := range nanolocaltests {
golden := &test.golden
nsec := test.seconds*1e9 + int64(golden.Nanosecond)
tm := Unix(0, nsec)
newnsec := tm.Unix()*1e9 + int64(tm.Nanosecond())
if newnsec != nsec {
t.Errorf("NanosecondsToLocalTime(%d).Seconds() = %d", nsec, newnsec)
}
if !same(tm, golden) {
t.Errorf("NanosecondsToLocalTime(%d):", nsec)
t.Errorf(" want=%+v", *golden)
t.Errorf(" have=%+v", tm.Format(RFC3339+" MST"))
}
}
}
func TestSecondsToUTCAndBack(t *testing.T) {
f := func(sec int64) bool { return Unix(sec, 0).UTC().Unix() == sec }
f32 := func(sec int32) bool { return f(int64(sec)) }
cfg := &quick.Config{MaxCount: 10000}
// Try a reasonable date first, then the huge ones.
if err := quick.Check(f32, cfg); err != nil {
t.Fatal(err)
}
if err := quick.Check(f, cfg); err != nil {
t.Fatal(err)
}
}
func TestNanosecondsToUTCAndBack(t *testing.T) {
f := func(nsec int64) bool {
t := Unix(0, nsec).UTC()
ns := t.Unix()*1e9 + int64(t.Nanosecond())
return ns == nsec
}
f32 := func(nsec int32) bool { return f(int64(nsec)) }
cfg := &quick.Config{MaxCount: 10000}
// Try a small date first, then the large ones. (The span is only a few hundred years
// for nanoseconds in an int64.)
if err := quick.Check(f32, cfg); err != nil {
t.Fatal(err)
}
if err := quick.Check(f, cfg); err != nil {
t.Fatal(err)
}
}
// The time routines provide no way to get absolute time
// (seconds since zero), but we need it to compute the right
// answer for bizarre roundings like "to the nearest 3 ns".
// Compute as t - year1 = (t - 1970) + (1970 - 2001) + (2001 - 1).
// t - 1970 is returned by Unix and Nanosecond.
// 1970 - 2001 is -(31*365+8)*86400 = -978307200 seconds.
// 2001 - 1 is 2000*365.2425*86400 = 63113904000 seconds.
const unixToZero = -978307200 + 63113904000
// abs returns the absolute time stored in t, as seconds and nanoseconds.
func abs(t Time) (sec, nsec int64) {
unix := t.Unix()
nano := t.Nanosecond()
return unix + unixToZero, int64(nano)
}
// absString returns abs as a decimal string.
func absString(t Time) string {
sec, nsec := abs(t)
if sec < 0 {
sec = -sec
nsec = -nsec
if nsec < 0 {
nsec += 1e9
sec--
}
return fmt.Sprintf("-%d%09d", sec, nsec)
}
return fmt.Sprintf("%d%09d", sec, nsec)
}
var truncateRoundTests = []struct {
t Time
d Duration
}{
{Date(-1, January, 1, 12, 15, 30, 5e8, UTC), 3},
{Date(-1, January, 1, 12, 15, 31, 5e8, UTC), 3},
{Date(2012, January, 1, 12, 15, 30, 5e8, UTC), Second},
{Date(2012, January, 1, 12, 15, 31, 5e8, UTC), Second},
{Unix(-19012425939, 649146258), 7435029458905025217}, // 5.8*d rounds to 6*d, but .8*d+.8*d < 0 < d
}
func TestTruncateRound(t *testing.T) {
var (
bsec = new(big.Int)
bnsec = new(big.Int)
bd = new(big.Int)
bt = new(big.Int)
br = new(big.Int)
bq = new(big.Int)
b1e9 = new(big.Int)
)
b1e9.SetInt64(1e9)
testOne := func(ti, tns, di int64) bool {
t0 := Unix(ti, int64(tns)).UTC()
d := Duration(di)
if d < 0 {
d = -d
}
if d <= 0 {
d = 1
}
// Compute bt = absolute nanoseconds.
sec, nsec := abs(t0)
bsec.SetInt64(sec)
bnsec.SetInt64(nsec)
bt.Mul(bsec, b1e9)
bt.Add(bt, bnsec)
// Compute quotient and remainder mod d.
bd.SetInt64(int64(d))
bq.DivMod(bt, bd, br)
// To truncate, subtract remainder.
// br is < d, so it fits in an int64.
r := br.Int64()
t1 := t0.Add(-Duration(r))
// Check that time.Truncate works.
if trunc := t0.Truncate(d); trunc != t1 {
t.Errorf("Time.Truncate(%s, %s) = %s, want %s\n"+
"%v trunc %v =\n%v want\n%v",
t0.Format(RFC3339Nano), d, trunc, t1.Format(RFC3339Nano),
absString(t0), int64(d), absString(trunc), absString(t1))
return false
}
// To round, add d back if remainder r > d/2 or r == exactly d/2.
// The commented out code would round half to even instead of up,
// but that makes it time-zone dependent, which is a bit strange.
if r > int64(d)/2 || r+r == int64(d) /*&& bq.Bit(0) == 1*/ {
t1 = t1.Add(Duration(d))
}
// Check that time.Round works.
if rnd := t0.Round(d); rnd != t1 {
t.Errorf("Time.Round(%s, %s) = %s, want %s\n"+
"%v round %v =\n%v want\n%v",
t0.Format(RFC3339Nano), d, rnd, t1.Format(RFC3339Nano),
absString(t0), int64(d), absString(rnd), absString(t1))
return false
}
return true
}
// manual test cases
for _, tt := range truncateRoundTests {
testOne(tt.t.Unix(), int64(tt.t.Nanosecond()), int64(tt.d))
}
// exhaustive near 0
for i := 0; i < 100; i++ {
for j := 1; j < 100; j++ {
testOne(unixToZero, int64(i), int64(j))
testOne(unixToZero, -int64(i), int64(j))
if t.Failed() {
return
}
}
}
if t.Failed() {
return
}
// randomly generated test cases
cfg := &quick.Config{MaxCount: 100000}
if testing.Short() {
cfg.MaxCount = 1000
}
// divisors of Second
f1 := func(ti int64, tns int32, logdi int32) bool {
d := Duration(1)
a, b := uint(logdi%9), (logdi>>16)%9
d <<= a
for i := 0; i < int(b); i++ {
d *= 5
}
return testOne(ti, int64(tns), int64(d))
}
quick.Check(f1, cfg)
// multiples of Second
f2 := func(ti int64, tns int32, di int32) bool {
d := Duration(di) * Second
if d < 0 {
d = -d
}
return testOne(ti, int64(tns), int64(d))
}
quick.Check(f2, cfg)
// halfway cases
f3 := func(tns, di int64) bool {
di &= 0xfffffffe
if di == 0 {
di = 2
}
tns -= tns % di
if tns < 0 {
tns += di / 2
} else {
tns -= di / 2
}
return testOne(0, tns, di)
}
quick.Check(f3, cfg)
// full generality
f4 := func(ti int64, tns int32, di int64) bool {
return testOne(ti, int64(tns), di)
}
quick.Check(f4, cfg)
}
type ISOWeekTest struct {
year int // year
month, day int // month and day
yex int // expected year
wex int // expected week
}
var isoWeekTests = []ISOWeekTest{
{1981, 1, 1, 1981, 1}, {1982, 1, 1, 1981, 53}, {1983, 1, 1, 1982, 52},
{1984, 1, 1, 1983, 52}, {1985, 1, 1, 1985, 1}, {1986, 1, 1, 1986, 1},
{1987, 1, 1, 1987, 1}, {1988, 1, 1, 1987, 53}, {1989, 1, 1, 1988, 52},
{1990, 1, 1, 1990, 1}, {1991, 1, 1, 1991, 1}, {1992, 1, 1, 1992, 1},
{1993, 1, 1, 1992, 53}, {1994, 1, 1, 1993, 52}, {1995, 1, 2, 1995, 1},
{1996, 1, 1, 1996, 1}, {1996, 1, 7, 1996, 1}, {1996, 1, 8, 1996, 2},
{1997, 1, 1, 1997, 1}, {1998, 1, 1, 1998, 1}, {1999, 1, 1, 1998, 53},
{2000, 1, 1, 1999, 52}, {2001, 1, 1, 2001, 1}, {2002, 1, 1, 2002, 1},
{2003, 1, 1, 2003, 1}, {2004, 1, 1, 2004, 1}, {2005, 1, 1, 2004, 53},
{2006, 1, 1, 2005, 52}, {2007, 1, 1, 2007, 1}, {2008, 1, 1, 2008, 1},
{2009, 1, 1, 2009, 1}, {2010, 1, 1, 2009, 53}, {2010, 1, 1, 2009, 53},
{2011, 1, 1, 2010, 52}, {2011, 1, 2, 2010, 52}, {2011, 1, 3, 2011, 1},
{2011, 1, 4, 2011, 1}, {2011, 1, 5, 2011, 1}, {2011, 1, 6, 2011, 1},
{2011, 1, 7, 2011, 1}, {2011, 1, 8, 2011, 1}, {2011, 1, 9, 2011, 1},
{2011, 1, 10, 2011, 2}, {2011, 1, 11, 2011, 2}, {2011, 6, 12, 2011, 23},
{2011, 6, 13, 2011, 24}, {2011, 12, 25, 2011, 51}, {2011, 12, 26, 2011, 52},
{2011, 12, 27, 2011, 52}, {2011, 12, 28, 2011, 52}, {2011, 12, 29, 2011, 52},
{2011, 12, 30, 2011, 52}, {2011, 12, 31, 2011, 52}, {1995, 1, 1, 1994, 52},
{2012, 1, 1, 2011, 52}, {2012, 1, 2, 2012, 1}, {2012, 1, 8, 2012, 1},
{2012, 1, 9, 2012, 2}, {2012, 12, 23, 2012, 51}, {2012, 12, 24, 2012, 52},
{2012, 12, 30, 2012, 52}, {2012, 12, 31, 2013, 1}, {2013, 1, 1, 2013, 1},
{2013, 1, 6, 2013, 1}, {2013, 1, 7, 2013, 2}, {2013, 12, 22, 2013, 51},
{2013, 12, 23, 2013, 52}, {2013, 12, 29, 2013, 52}, {2013, 12, 30, 2014, 1},
{2014, 1, 1, 2014, 1}, {2014, 1, 5, 2014, 1}, {2014, 1, 6, 2014, 2},
{2015, 1, 1, 2015, 1}, {2016, 1, 1, 2015, 53}, {2017, 1, 1, 2016, 52},
{2018, 1, 1, 2018, 1}, {2019, 1, 1, 2019, 1}, {2020, 1, 1, 2020, 1},
{2021, 1, 1, 2020, 53}, {2022, 1, 1, 2021, 52}, {2023, 1, 1, 2022, 52},
{2024, 1, 1, 2024, 1}, {2025, 1, 1, 2025, 1}, {2026, 1, 1, 2026, 1},
{2027, 1, 1, 2026, 53}, {2028, 1, 1, 2027, 52}, {2029, 1, 1, 2029, 1},
{2030, 1, 1, 2030, 1}, {2031, 1, 1, 2031, 1}, {2032, 1, 1, 2032, 1},
{2033, 1, 1, 2032, 53}, {2034, 1, 1, 2033, 52}, {2035, 1, 1, 2035, 1},
{2036, 1, 1, 2036, 1}, {2037, 1, 1, 2037, 1}, {2038, 1, 1, 2037, 53},
{2039, 1, 1, 2038, 52}, {2040, 1, 1, 2039, 52},
}
func TestISOWeek(t *testing.T) {
// Selected dates and corner cases
for _, wt := range isoWeekTests {
dt := Date(wt.year, Month(wt.month), wt.day, 0, 0, 0, 0, UTC)
y, w := dt.ISOWeek()
if w != wt.wex || y != wt.yex {
t.Errorf("got %d/%d; expected %d/%d for %d-%02d-%02d",
y, w, wt.yex, wt.wex, wt.year, wt.month, wt.day)
}
}
// The only real invariant: Jan 04 is in week 1
for year := 1950; year < 2100; year++ {
if y, w := Date(year, January, 4, 0, 0, 0, 0, UTC).ISOWeek(); y != year || w != 1 {
t.Errorf("got %d/%d; expected %d/1 for Jan 04", y, w, year)
}
}
}
type YearDayTest struct {
year, month, day int
yday int
}
// Test YearDay in several different scenarios
// and corner cases
var yearDayTests = []YearDayTest{
// Non-leap-year tests
{2007, 1, 1, 1},
{2007, 1, 15, 15},
{2007, 2, 1, 32},
{2007, 2, 15, 46},
{2007, 3, 1, 60},
{2007, 3, 15, 74},
{2007, 4, 1, 91},
{2007, 12, 31, 365},
// Leap-year tests
{2008, 1, 1, 1},
{2008, 1, 15, 15},
{2008, 2, 1, 32},
{2008, 2, 15, 46},
{2008, 3, 1, 61},
{2008, 3, 15, 75},
{2008, 4, 1, 92},
{2008, 12, 31, 366},
// Looks like leap-year (but isn't) tests
{1900, 1, 1, 1},
{1900, 1, 15, 15},
{1900, 2, 1, 32},
{1900, 2, 15, 46},
{1900, 3, 1, 60},
{1900, 3, 15, 74},
{1900, 4, 1, 91},
{1900, 12, 31, 365},
// Year one tests (non-leap)
{1, 1, 1, 1},
{1, 1, 15, 15},
{1, 2, 1, 32},
{1, 2, 15, 46},
{1, 3, 1, 60},
{1, 3, 15, 74},
{1, 4, 1, 91},
{1, 12, 31, 365},
// Year minus one tests (non-leap)
{-1, 1, 1, 1},
{-1, 1, 15, 15},
{-1, 2, 1, 32},
{-1, 2, 15, 46},
{-1, 3, 1, 60},
{-1, 3, 15, 74},
{-1, 4, 1, 91},
{-1, 12, 31, 365},
// 400 BC tests (leap-year)
{-400, 1, 1, 1},
{-400, 1, 15, 15},
{-400, 2, 1, 32},
{-400, 2, 15, 46},
{-400, 3, 1, 61},
{-400, 3, 15, 75},
{-400, 4, 1, 92},
{-400, 12, 31, 366},
// Special Cases
// Gregorian calendar change (no effect)
{1582, 10, 4, 277},
{1582, 10, 15, 288},
}
// Check to see if YearDay is location sensitive
var yearDayLocations = []*Location{
FixedZone("UTC-8", -8*60*60),
FixedZone("UTC-4", -4*60*60),
UTC,
FixedZone("UTC+4", 4*60*60),
FixedZone("UTC+8", 8*60*60),
}
func TestYearDay(t *testing.T) {
for _, loc := range yearDayLocations {
for _, ydt := range yearDayTests {
dt := Date(ydt.year, Month(ydt.month), ydt.day, 0, 0, 0, 0, loc)
yday := dt.YearDay()
if yday != ydt.yday {
t.Errorf("got %d, expected %d for %d-%02d-%02d in %v",
yday, ydt.yday, ydt.year, ydt.month, ydt.day, loc)
}
}
}
}
var durationTests = []struct {
str string
d Duration
}{
{"0s", 0},
{"1ns", 1 * Nanosecond},
{"1.1µs", 1100 * Nanosecond},
{"2.2ms", 2200 * Microsecond},
{"3.3s", 3300 * Millisecond},
{"4m5s", 4*Minute + 5*Second},
{"4m5.001s", 4*Minute + 5001*Millisecond},
{"5h6m7.001s", 5*Hour + 6*Minute + 7001*Millisecond},
{"8m0.000000001s", 8*Minute + 1*Nanosecond},
{"2562047h47m16.854775807s", 1<<63 - 1},
{"-2562047h47m16.854775808s", -1 << 63},
}
func TestDurationString(t *testing.T) {
for _, tt := range durationTests {
if str := tt.d.String(); str != tt.str {
t.Errorf("Duration(%d).String() = %s, want %s", int64(tt.d), str, tt.str)
}
if tt.d > 0 {
if str := (-tt.d).String(); str != "-"+tt.str {
t.Errorf("Duration(%d).String() = %s, want %s", int64(-tt.d), str, "-"+tt.str)
}
}
}
}
var dateTests = []struct {
year, month, day, hour, min, sec, nsec int
z *Location
unix int64
}{
{2011, 11, 6, 1, 0, 0, 0, Local, 1320566400}, // 1:00:00 PDT
{2011, 11, 6, 1, 59, 59, 0, Local, 1320569999}, // 1:59:59 PDT
{2011, 11, 6, 2, 0, 0, 0, Local, 1320573600}, // 2:00:00 PST
{2011, 3, 13, 1, 0, 0, 0, Local, 1300006800}, // 1:00:00 PST
{2011, 3, 13, 1, 59, 59, 0, Local, 1300010399}, // 1:59:59 PST
{2011, 3, 13, 3, 0, 0, 0, Local, 1300010400}, // 3:00:00 PDT
{2011, 3, 13, 2, 30, 0, 0, Local, 1300008600}, // 2:30:00 PDT ≡ 1:30 PST
{2012, 12, 24, 0, 0, 0, 0, Local, 1356336000}, // Leap year
// Many names for Fri Nov 18 7:56:35 PST 2011
{2011, 11, 18, 7, 56, 35, 0, Local, 1321631795}, // Nov 18 7:56:35
{2011, 11, 19, -17, 56, 35, 0, Local, 1321631795}, // Nov 19 -17:56:35
{2011, 11, 17, 31, 56, 35, 0, Local, 1321631795}, // Nov 17 31:56:35
{2011, 11, 18, 6, 116, 35, 0, Local, 1321631795}, // Nov 18 6:116:35
{2011, 10, 49, 7, 56, 35, 0, Local, 1321631795}, // Oct 49 7:56:35
{2011, 11, 18, 7, 55, 95, 0, Local, 1321631795}, // Nov 18 7:55:95
{2011, 11, 18, 7, 56, 34, 1e9, Local, 1321631795}, // Nov 18 7:56:34 + 10⁹ns
{2011, 12, -12, 7, 56, 35, 0, Local, 1321631795}, // Dec -21 7:56:35
{2012, 1, -43, 7, 56, 35, 0, Local, 1321631795}, // Jan -52 7:56:35 2012
{2012, int(January - 2), 18, 7, 56, 35, 0, Local, 1321631795}, // (Jan-2) 18 7:56:35 2012
{2010, int(December + 11), 18, 7, 56, 35, 0, Local, 1321631795}, // (Dec+11) 18 7:56:35 2010
}
func TestDate(t *testing.T) {
for _, tt := range dateTests {
time := Date(tt.year, Month(tt.month), tt.day, tt.hour, tt.min, tt.sec, tt.nsec, tt.z)
want := Unix(tt.unix, 0)
if !time.Equal(want) {
t.Errorf("Date(%d, %d, %d, %d, %d, %d, %d, %s) = %v, want %v",
tt.year, tt.month, tt.day, tt.hour, tt.min, tt.sec, tt.nsec, tt.z,
time, want)
}
}
}
// Several ways of getting from
// Fri Nov 18 7:56:35 PST 2011
// to
// Thu Mar 19 7:56:35 PST 2016
var addDateTests = []struct {
years, months, days int
}{
{4, 4, 1},
{3, 16, 1},
{3, 15, 30},
{5, -6, -18 - 30 - 12},
}
func TestAddDate(t *testing.T) {
t0 := Date(2011, 11, 18, 7, 56, 35, 0, UTC)
t1 := Date(2016, 3, 19, 7, 56, 35, 0, UTC)
for _, at := range addDateTests {
time := t0.AddDate(at.years, at.months, at.days)
if !time.Equal(t1) {
t.Errorf("AddDate(%d, %d, %d) = %v, want %v",
at.years, at.months, at.days,
time, t1)
}
}
}
var daysInTests = []struct {
year, month, di int
}{
{2011, 1, 31}, // January, first month, 31 days
{2011, 2, 28}, // February, non-leap year, 28 days
{2012, 2, 29}, // February, leap year, 29 days
{2011, 6, 30}, // June, 30 days
{2011, 12, 31}, // December, last month, 31 days
}
func TestDaysIn(t *testing.T) {
// The daysIn function is not exported.
// Test the daysIn function via the `var DaysIn = daysIn`
// statement in the internal_test.go file.
for _, tt := range daysInTests {
di := DaysIn(Month(tt.month), tt.year)
if di != tt.di {
t.Errorf("got %d; expected %d for %d-%02d",
di, tt.di, tt.year, tt.month)
}
}
}
func TestAddToExactSecond(t *testing.T) {
// Add an amount to the current time to round it up to the next exact second.
// This test checks that the nsec field still lies within the range [0, 999999999].
t1 := Now()
t2 := t1.Add(Second - Duration(t1.Nanosecond()))
sec := (t1.Second() + 1) % 60
if t2.Second() != sec || t2.Nanosecond() != 0 {
t.Errorf("sec = %d, nsec = %d, want sec = %d, nsec = 0", t2.Second(), t2.Nanosecond(), sec)
}
}
func equalTimeAndZone(a, b Time) bool {
aname, aoffset := a.Zone()
bname, boffset := b.Zone()
return a.Equal(b) && aoffset == boffset && aname == bname
}
var gobTests = []Time{
Date(0, 1, 2, 3, 4, 5, 6, UTC),
Date(7, 8, 9, 10, 11, 12, 13, FixedZone("", 0)),
Unix(81985467080890095, 0x76543210), // Time.sec: 0x0123456789ABCDEF
{}, // nil location
Date(1, 2, 3, 4, 5, 6, 7, FixedZone("", 32767*60)),
Date(1, 2, 3, 4, 5, 6, 7, FixedZone("", -32768*60)),
}
func TestTimeGob(t *testing.T) {
var b bytes.Buffer
enc := gob.NewEncoder(&b)
dec := gob.NewDecoder(&b)
for _, tt := range gobTests {
var gobtt Time
if err := enc.Encode(&tt); err != nil {
t.Errorf("%v gob Encode error = %q, want nil", tt, err)
} else if err := dec.Decode(&gobtt); err != nil {
t.Errorf("%v gob Decode error = %q, want nil", tt, err)
} else if !equalTimeAndZone(gobtt, tt) {
t.Errorf("Decoded time = %v, want %v", gobtt, tt)
}
b.Reset()
}
}
var invalidEncodingTests = []struct {
bytes []byte
want string
}{
{[]byte{}, "Time.UnmarshalBinary: no data"},
{[]byte{0, 2, 3}, "Time.UnmarshalBinary: unsupported version"},
{[]byte{1, 2, 3}, "Time.UnmarshalBinary: invalid length"},
}
func TestInvalidTimeGob(t *testing.T) {
for _, tt := range invalidEncodingTests {
var ignored Time
err := ignored.GobDecode(tt.bytes)
if err == nil || err.Error() != tt.want {
t.Errorf("time.GobDecode(%#v) error = %v, want %v", tt.bytes, err, tt.want)
}
err = ignored.UnmarshalBinary(tt.bytes)
if err == nil || err.Error() != tt.want {
t.Errorf("time.UnmarshalBinary(%#v) error = %v, want %v", tt.bytes, err, tt.want)
}
}
}
var notEncodableTimes = []struct {
time Time
want string
}{
{Date(0, 1, 2, 3, 4, 5, 6, FixedZone("", 1)), "Time.MarshalBinary: zone offset has fractional minute"},
{Date(0, 1, 2, 3, 4, 5, 6, FixedZone("", -1*60)), "Time.MarshalBinary: unexpected zone offset"},
{Date(0, 1, 2, 3, 4, 5, 6, FixedZone("", -32769*60)), "Time.MarshalBinary: unexpected zone offset"},
{Date(0, 1, 2, 3, 4, 5, 6, FixedZone("", 32768*60)), "Time.MarshalBinary: unexpected zone offset"},
}
func TestNotGobEncodableTime(t *testing.T) {
for _, tt := range notEncodableTimes {
_, err := tt.time.GobEncode()
if err == nil || err.Error() != tt.want {
t.Errorf("%v GobEncode error = %v, want %v", tt.time, err, tt.want)
}
_, err = tt.time.MarshalBinary()
if err == nil || err.Error() != tt.want {
t.Errorf("%v MarshalBinary error = %v, want %v", tt.time, err, tt.want)
}
}
}
var jsonTests = []struct {
time Time
json string
}{
{Date(9999, 4, 12, 23, 20, 50, 520*1e6, UTC), `"9999-04-12T23:20:50.52Z"`},
{Date(1996, 12, 19, 16, 39, 57, 0, Local), `"1996-12-19T16:39:57-08:00"`},
{Date(0, 1, 1, 0, 0, 0, 1, FixedZone("", 1*60)), `"0000-01-01T00:00:00.000000001+00:01"`},
}
func TestTimeJSON(t *testing.T) {
for _, tt := range jsonTests {
var jsonTime Time
if jsonBytes, err := json.Marshal(tt.time); err != nil {
t.Errorf("%v json.Marshal error = %v, want nil", tt.time, err)
} else if string(jsonBytes) != tt.json {
t.Errorf("%v JSON = %#q, want %#q", tt.time, string(jsonBytes), tt.json)
} else if err = json.Unmarshal(jsonBytes, &jsonTime); err != nil {
t.Errorf("%v json.Unmarshal error = %v, want nil", tt.time, err)
} else if !equalTimeAndZone(jsonTime, tt.time) {
t.Errorf("Unmarshaled time = %v, want %v", jsonTime, tt.time)
}
}
}
func TestInvalidTimeJSON(t *testing.T) {
var tt Time
err := json.Unmarshal([]byte(`{"now is the time":"buddy"}`), &tt)
_, isParseErr := err.(*ParseError)
if !isParseErr {
t.Errorf("expected *time.ParseError unmarshaling JSON, got %v", err)
}
}
var notJSONEncodableTimes = []struct {
time Time
want string
}{
{Date(10000, 1, 1, 0, 0, 0, 0, UTC), "Time.MarshalJSON: year outside of range [0,9999]"},
{Date(-1, 1, 1, 0, 0, 0, 0, UTC), "Time.MarshalJSON: year outside of range [0,9999]"},
}
func TestNotJSONEncodableTime(t *testing.T) {
for _, tt := range notJSONEncodableTimes {
_, err := tt.time.MarshalJSON()
if err == nil || err.Error() != tt.want {
t.Errorf("%v MarshalJSON error = %v, want %v", tt.time, err, tt.want)
}
}
}
var parseDurationTests = []struct {
in string
ok bool
want Duration
}{
// simple
{"0", true, 0},
{"5s", true, 5 * Second},
{"30s", true, 30 * Second},
{"1478s", true, 1478 * Second},
// sign
{"-5s", true, -5 * Second},
{"+5s", true, 5 * Second},
{"-0", true, 0},
{"+0", true, 0},
// decimal
{"5.0s", true, 5 * Second},
{"5.6s", true, 5*Second + 600*Millisecond},
{"5.s", true, 5 * Second},
{".5s", true, 500 * Millisecond},
{"1.0s", true, 1 * Second},
{"1.00s", true, 1 * Second},
{"1.004s", true, 1*Second + 4*Millisecond},
{"1.0040s", true, 1*Second + 4*Millisecond},
{"100.00100s", true, 100*Second + 1*Millisecond},
// different units
{"10ns", true, 10 * Nanosecond},
{"11us", true, 11 * Microsecond},
{"12µs", true, 12 * Microsecond}, // U+00B5
{"12μs", true, 12 * Microsecond}, // U+03BC
{"13ms", true, 13 * Millisecond},
{"14s", true, 14 * Second},
{"15m", true, 15 * Minute},
{"16h", true, 16 * Hour},
// composite durations
{"3h30m", true, 3*Hour + 30*Minute},
{"10.5s4m", true, 4*Minute + 10*Second + 500*Millisecond},
{"-2m3.4s", true, -(2*Minute + 3*Second + 400*Millisecond)},
{"1h2m3s4ms5us6ns", true, 1*Hour + 2*Minute + 3*Second + 4*Millisecond + 5*Microsecond + 6*Nanosecond},
{"39h9m14.425s", true, 39*Hour + 9*Minute + 14*Second + 425*Millisecond},
// large value
{"52763797000ns", true, 52763797000 * Nanosecond},
// more than 9 digits after decimal point, see https://golang.org/issue/6617
{"0.3333333333333333333h", true, 20 * Minute},
// 9007199254740993 = 1<<53+1 cannot be stored precisely in a float64
{"9007199254740993ns", true, (1<<53 + 1) * Nanosecond},
// largest duration that can be represented by int64 in nanoseconds
{"9223372036854775807ns", true, (1<<63 - 1) * Nanosecond},
{"9223372036854775.807us", true, (1<<63 - 1) * Nanosecond},
{"9223372036s854ms775us807ns", true, (1<<63 - 1) * Nanosecond},
// large negative value
{"-9223372036854775807ns", true, -1<<63 + 1*Nanosecond},
// huge string; issue 15011.
{"0.100000000000000000000h", true, 6 * Minute},
// This value tests the first overflow check in leadingFraction.
{"0.830103483285477580700h", true, 49*Minute + 48*Second + 372539827*Nanosecond},
// errors
{"", false, 0},
{"3", false, 0},
{"-", false, 0},
{"s", false, 0},
{".", false, 0},
{"-.", false, 0},
{".s", false, 0},
{"+.s", false, 0},
{"3000000h", false, 0}, // overflow
{"9223372036854775808ns", false, 0}, // overflow
{"9223372036854775.808us", false, 0}, // overflow
{"9223372036854ms775us808ns", false, 0}, // overflow
// largest negative value of type int64 in nanoseconds should fail
// see https://go-review.googlesource.com/#/c/2461/
{"-9223372036854775808ns", false, 0},
}
func TestParseDuration(t *testing.T) {
for _, tc := range parseDurationTests {
d, err := ParseDuration(tc.in)
if tc.ok && (err != nil || d != tc.want) {
t.Errorf("ParseDuration(%q) = %v, %v, want %v, nil", tc.in, d, err, tc.want)
} else if !tc.ok && err == nil {
t.Errorf("ParseDuration(%q) = _, nil, want _, non-nil", tc.in)
}
}
}
func TestParseDurationRoundTrip(t *testing.T) {
for i := 0; i < 100; i++ {
// Resolutions finer than milliseconds will result in
// imprecise round-trips.
d0 := Duration(rand.Int31()) * Millisecond
s := d0.String()
d1, err := ParseDuration(s)
if err != nil || d0 != d1 {
t.Errorf("round-trip failed: %d => %q => %d, %v", d0, s, d1, err)
}
}
}
// golang.org/issue/4622
func TestLocationRace(t *testing.T) {
ResetLocalOnceForTest() // reset the Once to trigger the race
c := make(chan string, 1)
go func() {
c <- Now().String()
}()
_ = Now().String()
<-c
Sleep(100 * Millisecond)
// Back to Los Angeles for subsequent tests:
ForceUSPacificForTesting()
}
var (
t Time
u int64
)
var mallocTest = []struct {
count int
desc string
fn func()
}{
{0, `time.Now()`, func() { t = Now() }},
{0, `time.Now().UnixNano()`, func() { u = Now().UnixNano() }},
}
func TestCountMallocs(t *testing.T) {
if testing.Short() {
t.Skip("skipping malloc count in short mode")
}
if runtime.GOMAXPROCS(0) > 1 {
t.Skip("skipping; GOMAXPROCS>1")
}
for _, mt := range mallocTest {
allocs := int(testing.AllocsPerRun(100, mt.fn))
if allocs > mt.count {
t.Errorf("%s: %d allocs, want %d", mt.desc, allocs, mt.count)
}
}
}
func TestLoadFixed(t *testing.T) {
// Issue 4064: handle locations without any zone transitions.
loc, err := LoadLocation("Etc/GMT+1")
if err != nil {
t.Fatal(err)
}
// The tzdata name Etc/GMT+1 uses "east is negative",
// but Go and most other systems use "east is positive".
// So GMT+1 corresponds to -3600 in the Go zone, not +3600.
name, offset := Now().In(loc).Zone()
// The zone abbreviation is "-01" since tzdata-2016g, and "GMT+1"
// on earlier versions; we accept both. (Issue #17276).
if !(name == "GMT+1" || name == "-01") || offset != -1*60*60 {
t.Errorf("Now().In(loc).Zone() = %q, %d, want %q or %q, %d",
name, offset, "GMT+1", "-01", -1*60*60)
}
}
const (
minDuration Duration = -1 << 63
maxDuration Duration = 1<<63 - 1
)
var subTests = []struct {
t Time
u Time
d Duration
}{
{Time{}, Time{}, Duration(0)},
{Date(2009, 11, 23, 0, 0, 0, 1, UTC), Date(2009, 11, 23, 0, 0, 0, 0, UTC), Duration(1)},
{Date(2009, 11, 23, 0, 0, 0, 0, UTC), Date(2009, 11, 24, 0, 0, 0, 0, UTC), -24 * Hour},
{Date(2009, 11, 24, 0, 0, 0, 0, UTC), Date(2009, 11, 23, 0, 0, 0, 0, UTC), 24 * Hour},
{Date(-2009, 11, 24, 0, 0, 0, 0, UTC), Date(-2009, 11, 23, 0, 0, 0, 0, UTC), 24 * Hour},
{Time{}, Date(2109, 11, 23, 0, 0, 0, 0, UTC), Duration(minDuration)},
{Date(2109, 11, 23, 0, 0, 0, 0, UTC), Time{}, Duration(maxDuration)},
{Time{}, Date(-2109, 11, 23, 0, 0, 0, 0, UTC), Duration(maxDuration)},
{Date(-2109, 11, 23, 0, 0, 0, 0, UTC), Time{}, Duration(minDuration)},
{Date(2290, 1, 1, 0, 0, 0, 0, UTC), Date(2000, 1, 1, 0, 0, 0, 0, UTC), 290*365*24*Hour + 71*24*Hour},
{Date(2300, 1, 1, 0, 0, 0, 0, UTC), Date(2000, 1, 1, 0, 0, 0, 0, UTC), Duration(maxDuration)},
{Date(2000, 1, 1, 0, 0, 0, 0, UTC), Date(2290, 1, 1, 0, 0, 0, 0, UTC), -290*365*24*Hour - 71*24*Hour},
{Date(2000, 1, 1, 0, 0, 0, 0, UTC), Date(2300, 1, 1, 0, 0, 0, 0, UTC), Duration(minDuration)},
{MinMonoTime, MaxMonoTime, minDuration},
{MaxMonoTime, MinMonoTime, maxDuration},
}
func TestSub(t *testing.T) {
for i, st := range subTests {
got := st.t.Sub(st.u)
if got != st.d {
t.Errorf("#%d: Sub(%v, %v): got %v; want %v", i, st.t, st.u, got, st.d)
}
}
}
var nsDurationTests = []struct {
d Duration
want int64
}{
{Duration(-1000), -1000},
{Duration(-1), -1},
{Duration(1), 1},
{Duration(1000), 1000},
}
func TestDurationNanoseconds(t *testing.T) {
for _, tt := range nsDurationTests {
if got := tt.d.Nanoseconds(); got != tt.want {
t.Errorf("d.Nanoseconds() = %d; want: %d", got, tt.want)
}
}
}
var secDurationTests = []struct {
d Duration
want float64
}{
{Duration(300000000), 0.3},
}
func TestDurationSeconds(t *testing.T) {
for _, tt := range secDurationTests {
if got := tt.d.Seconds(); got != tt.want {
t.Errorf("d.Seconds() = %g; want: %g", got, tt.want)
}
}
}
var minDurationTests = []struct {
d Duration
want float64
}{
{Duration(-60000000000), -1},
{Duration(-1), -1 / 60e9},
{Duration(1), 1 / 60e9},
{Duration(60000000000), 1},
{Duration(3000), 5e-8},
}
func TestDurationMinutes(t *testing.T) {
for _, tt := range minDurationTests {
if got := tt.d.Minutes(); got != tt.want {
t.Errorf("d.Minutes() = %g; want: %g", got, tt.want)
}
}
}
var hourDurationTests = []struct {
d Duration
want float64
}{
{Duration(-3600000000000), -1},
{Duration(-1), -1 / 3600e9},
{Duration(1), 1 / 3600e9},
{Duration(3600000000000), 1},
{Duration(36), 1e-11},
}
func TestDurationHours(t *testing.T) {
for _, tt := range hourDurationTests {
if got := tt.d.Hours(); got != tt.want {
t.Errorf("d.Hours() = %g; want: %g", got, tt.want)
}
}
}
var durationTruncateTests = []struct {
d Duration
m Duration
want Duration
}{
{0, Second, 0},
{Minute, -7 * Second, Minute},
{Minute, 0, Minute},
{Minute, 1, Minute},
{Minute + 10*Second, 10 * Second, Minute + 10*Second},
{2*Minute + 10*Second, Minute, 2 * Minute},
{10*Minute + 10*Second, 3 * Minute, 9 * Minute},
{Minute + 10*Second, Minute + 10*Second + 1, 0},
{Minute + 10*Second, Hour, 0},
{-Minute, Second, -Minute},
{-10 * Minute, 3 * Minute, -9 * Minute},
{-10 * Minute, Hour, 0},
}
func TestDurationTruncate(t *testing.T) {
for _, tt := range durationTruncateTests {
if got := tt.d.Truncate(tt.m); got != tt.want {
t.Errorf("Duration(%s).Truncate(%s) = %s; want: %s", tt.d, tt.m, got, tt.want)
}
}
}
var durationRoundTests = []struct {
d Duration
m Duration
want Duration
}{
{0, Second, 0},
{Minute, -11 * Second, Minute},
{Minute, 0, Minute},
{Minute, 1, Minute},
{2 * Minute, Minute, 2 * Minute},
{2*Minute + 10*Second, Minute, 2 * Minute},
{2*Minute + 30*Second, Minute, 3 * Minute},
{2*Minute + 50*Second, Minute, 3 * Minute},
{-Minute, 1, -Minute},
{-2 * Minute, Minute, -2 * Minute},
{-2*Minute - 10*Second, Minute, -2 * Minute},
{-2*Minute - 30*Second, Minute, -3 * Minute},
{-2*Minute - 50*Second, Minute, -3 * Minute},
{8e18, 3e18, 9e18},
{9e18, 5e18, 1<<63 - 1},
{-8e18, 3e18, -9e18},
{-9e18, 5e18, -1 << 63},
{3<<61 - 1, 3 << 61, 3 << 61},
}
func TestDurationRound(t *testing.T) {
for _, tt := range durationRoundTests {
if got := tt.d.Round(tt.m); got != tt.want {
t.Errorf("Duration(%s).Round(%s) = %s; want: %s", tt.d, tt.m, got, tt.want)
}
}
}
var defaultLocTests = []struct {
name string
f func(t1, t2 Time) bool
}{
{"After", func(t1, t2 Time) bool { return t1.After(t2) == t2.After(t1) }},
{"Before", func(t1, t2 Time) bool { return t1.Before(t2) == t2.Before(t1) }},
{"Equal", func(t1, t2 Time) bool { return t1.Equal(t2) == t2.Equal(t1) }},
{"IsZero", func(t1, t2 Time) bool { return t1.IsZero() == t2.IsZero() }},
{"Date", func(t1, t2 Time) bool {
a1, b1, c1 := t1.Date()
a2, b2, c2 := t2.Date()
return a1 == a2 && b1 == b2 && c1 == c2
}},
{"Year", func(t1, t2 Time) bool { return t1.Year() == t2.Year() }},
{"Month", func(t1, t2 Time) bool { return t1.Month() == t2.Month() }},
{"Day", func(t1, t2 Time) bool { return t1.Day() == t2.Day() }},
{"Weekday", func(t1, t2 Time) bool { return t1.Weekday() == t2.Weekday() }},
{"ISOWeek", func(t1, t2 Time) bool {
a1, b1 := t1.ISOWeek()
a2, b2 := t2.ISOWeek()
return a1 == a2 && b1 == b2
}},
{"Clock", func(t1, t2 Time) bool {
a1, b1, c1 := t1.Clock()
a2, b2, c2 := t2.Clock()
return a1 == a2 && b1 == b2 && c1 == c2
}},
{"Hour", func(t1, t2 Time) bool { return t1.Hour() == t2.Hour() }},
{"Minute", func(t1, t2 Time) bool { return t1.Minute() == t2.Minute() }},
{"Second", func(t1, t2 Time) bool { return t1.Second() == t2.Second() }},
{"Nanosecond", func(t1, t2 Time) bool { return t1.Hour() == t2.Hour() }},
{"YearDay", func(t1, t2 Time) bool { return t1.YearDay() == t2.YearDay() }},
// Using Equal since Add don't modify loc using "==" will cause a fail
{"Add", func(t1, t2 Time) bool { return t1.Add(Hour).Equal(t2.Add(Hour)) }},
{"Sub", func(t1, t2 Time) bool { return t1.Sub(t2) == t2.Sub(t1) }},
//Original caus for this test case bug 15852
{"AddDate", func(t1, t2 Time) bool { return t1.AddDate(1991, 9, 3) == t2.AddDate(1991, 9, 3) }},
{"UTC", func(t1, t2 Time) bool { return t1.UTC() == t2.UTC() }},
{"Local", func(t1, t2 Time) bool { return t1.Local() == t2.Local() }},
{"In", func(t1, t2 Time) bool { return t1.In(UTC) == t2.In(UTC) }},
{"Local", func(t1, t2 Time) bool { return t1.Local() == t2.Local() }},
{"Zone", func(t1, t2 Time) bool {
a1, b1 := t1.Zone()
a2, b2 := t2.Zone()
return a1 == a2 && b1 == b2
}},
{"Unix", func(t1, t2 Time) bool { return t1.Unix() == t2.Unix() }},
{"UnixNano", func(t1, t2 Time) bool { return t1.UnixNano() == t2.UnixNano() }},
{"MarshalBinary", func(t1, t2 Time) bool {
a1, b1 := t1.MarshalBinary()
a2, b2 := t2.MarshalBinary()
return bytes.Equal(a1, a2) && b1 == b2
}},
{"GobEncode", func(t1, t2 Time) bool {
a1, b1 := t1.GobEncode()
a2, b2 := t2.GobEncode()
return bytes.Equal(a1, a2) && b1 == b2
}},
{"MarshalJSON", func(t1, t2 Time) bool {
a1, b1 := t1.MarshalJSON()
a2, b2 := t2.MarshalJSON()
return bytes.Equal(a1, a2) && b1 == b2
}},
{"MarshalText", func(t1, t2 Time) bool {
a1, b1 := t1.MarshalText()
a2, b2 := t2.MarshalText()
return bytes.Equal(a1, a2) && b1 == b2
}},
{"Truncate", func(t1, t2 Time) bool { return t1.Truncate(Hour).Equal(t2.Truncate(Hour)) }},
{"Round", func(t1, t2 Time) bool { return t1.Round(Hour).Equal(t2.Round(Hour)) }},
{"== Time{}", func(t1, t2 Time) bool { return (t1 == Time{}) == (t2 == Time{}) }},
}
func TestDefaultLoc(t *testing.T) {
// Verify that all of Time's methods behave identically if loc is set to
// nil or UTC.
for _, tt := range defaultLocTests {
t1 := Time{}
t2 := Time{}.UTC()
if !tt.f(t1, t2) {
t.Errorf("Time{} and Time{}.UTC() behave differently for %s", tt.name)
}
}
}
func BenchmarkNow(b *testing.B) {
for i := 0; i < b.N; i++ {
t = Now()
}
}
func BenchmarkNowUnixNano(b *testing.B) {
for i := 0; i < b.N; i++ {
u = Now().UnixNano()
}
}
func BenchmarkFormat(b *testing.B) {
t := Unix(1265346057, 0)
for i := 0; i < b.N; i++ {
t.Format("Mon Jan 2 15:04:05 2006")
}
}
func BenchmarkFormatNow(b *testing.B) {
// Like BenchmarkFormat, but easier, because the time zone
// lookup cache is optimized for the present.
t := Now()
for i := 0; i < b.N; i++ {
t.Format("Mon Jan 2 15:04:05 2006")
}
}
func BenchmarkMarshalJSON(b *testing.B) {
t := Now()
for i := 0; i < b.N; i++ {
t.MarshalJSON()
}
}
func BenchmarkMarshalText(b *testing.B) {
t := Now()
for i := 0; i < b.N; i++ {
t.MarshalText()
}
}
func BenchmarkParse(b *testing.B) {
for i := 0; i < b.N; i++ {
Parse(ANSIC, "Mon Jan 2 15:04:05 2006")
}
}
func BenchmarkParseDuration(b *testing.B) {
for i := 0; i < b.N; i++ {
ParseDuration("9007199254.740993ms")
ParseDuration("9007199254740993ns")
}
}
func BenchmarkHour(b *testing.B) {
t := Now()
for i := 0; i < b.N; i++ {
_ = t.Hour()
}
}
func BenchmarkSecond(b *testing.B) {
t := Now()
for i := 0; i < b.N; i++ {
_ = t.Second()
}
}
func BenchmarkYear(b *testing.B) {
t := Now()
for i := 0; i < b.N; i++ {
_ = t.Year()
}
}
func BenchmarkDay(b *testing.B) {
t := Now()
for i := 0; i < b.N; i++ {
_ = t.Day()
}
}
func TestMarshalBinaryZeroTime(t *testing.T) {
t0 := Time{}
enc, err := t0.MarshalBinary()
if err != nil {
t.Fatal(err)
}
t1 := Now() // not zero
if err := t1.UnmarshalBinary(enc); err != nil {
t.Fatal(err)
}
if t1 != t0 {
t.Errorf("t0=%#v\nt1=%#v\nwant identical structures", t0, t1)
}
}
// Issue 17720: Zero value of time.Month fails to print
func TestZeroMonthString(t *testing.T) {
if got, want := Month(0).String(), "%!Month(0)"; got != want {
t.Errorf("zero month = %q; want %q", got, want)
}
}
// Issue 24692: Out of range weekday panics
func TestWeekdayString(t *testing.T) {
if got, want := Weekday(Tuesday).String(), "Tuesday"; got != want {
t.Errorf("Tuesday weekday = %q; want %q", got, want)
}
if got, want := Weekday(14).String(), "%!Weekday(14)"; got != want {
t.Errorf("14th weekday = %q; want %q", got, want)
}
}
func TestReadFileLimit(t *testing.T) {
const zero = "/dev/zero"
if _, err := os.Stat(zero); err != nil {
t.Skip("skipping test without a /dev/zero")
}
_, err := ReadFile(zero)
if err == nil || !strings.Contains(err.Error(), "is too large") {
t.Errorf("readFile(%q) error = %v; want error containing 'is too large'", zero, err)
}
}
// Issue 25686: hard crash on concurrent timer access.
// This test deliberately invokes a race condition.
// We are testing that we don't crash with "fatal error: panic holding locks".
func TestConcurrentTimerReset(t *testing.T) {
if race.Enabled {
t.Skip("skipping test under race detector")
}
// We expect this code to panic rather than crash.
// Don't worry if it doesn't panic.
catch := func(i int) {
if e := recover(); e != nil {
t.Logf("panic in goroutine %d, as expected, with %q", i, e)
} else {
t.Logf("no panic in goroutine %d", i)
}
}
const goroutines = 8
const tries = 1000
var wg sync.WaitGroup
wg.Add(goroutines)
timer := NewTimer(Hour)
for i := 0; i < goroutines; i++ {
go func(i int) {
defer wg.Done()
defer catch(i)
for j := 0; j < tries; j++ {
timer.Reset(Hour + Duration(i*j))
}
}(i)
}
wg.Wait()
}