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-rw-r--r--src/time/time_test.go1779
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diff --git a/src/time/time_test.go b/src/time/time_test.go
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+// 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"
+ "math"
+ "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"}},
+ {2159200800, parsedTime{2038, June, 3, 11, 0, 0, 0, Thursday, -7 * 60 * 60, "PDT"}},
+ {2152173599, parsedTime{2038, March, 14, 1, 59, 59, 0, Sunday, -8 * 60 * 60, "PST"}},
+ {2152173600, parsedTime{2038, March, 14, 3, 0, 0, 0, Sunday, -7 * 60 * 60, "PDT"}},
+ {2152173601, parsedTime{2038, March, 14, 3, 0, 1, 0, Sunday, -7 * 60 * 60, "PDT"}},
+ {2172733199, parsedTime{2038, November, 7, 1, 59, 59, 0, Sunday, -7 * 60 * 60, "PDT"}},
+ {2172733200, parsedTime{2038, November, 7, 1, 0, 0, 0, Sunday, -8 * 60 * 60, "PST"}},
+ {2172733201, parsedTime{2038, November, 7, 1, 0, 1, 0, Sunday, -8 * 60 * 60, "PST"}},
+}
+
+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)
+ }
+}
+
+func TestUnixMilli(t *testing.T) {
+ f := func(msec int64) bool {
+ t := UnixMilli(msec)
+ return t.UnixMilli() == msec
+ }
+ cfg := &quick.Config{MaxCount: 10000}
+ if err := quick.Check(f, cfg); err != nil {
+ t.Fatal(err)
+ }
+}
+
+func TestUnixMicro(t *testing.T) {
+ f := func(usec int64) bool {
+ t := UnixMicro(usec)
+ return t.UnixMicro() == usec
+ }
+ cfg := &quick.Config{MaxCount: 10000}
+ 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 {
+ t.Helper()
+
+ 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
+ }
+
+ // Make room for unix ↔ internal conversion.
+ // We don't care about behavior too close to ± 2^63 Unix seconds.
+ // It is full of wraparounds but will never happen in a reasonable program.
+ // (Or maybe not? See go.dev/issue/20678. In any event, they're not handled today.)
+ ti >>= 1
+
+ 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
+ }
+ ti >>= 1 // see comment in f1
+ 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 {
+ ti >>= 1 // see comment in f1
+ 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 i, 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("Date(%d-%02d-%02d in %v).YearDay() = %d, want %d",
+ ydt.year, ydt.month, ydt.day, loc, yday, ydt.yday)
+ continue
+ }
+
+ if ydt.year < 0 || ydt.year > 9999 {
+ continue
+ }
+ f := fmt.Sprintf("%04d-%02d-%02d %03d %+.2d00",
+ ydt.year, ydt.month, ydt.day, ydt.yday, (i-2)*4)
+ dt1, err := Parse("2006-01-02 002 -0700", f)
+ if err != nil {
+ t.Errorf(`Parse("2006-01-02 002 -0700", %q): %v`, f, err)
+ continue
+ }
+ if !dt1.Equal(dt) {
+ t.Errorf(`Parse("2006-01-02 002 -0700", %q) = %v, want %v`, f, dt1, dt)
+ }
+ }
+ }
+}
+
+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*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
+ want Duration
+}{
+ // simple
+ {"0", 0},
+ {"5s", 5 * Second},
+ {"30s", 30 * Second},
+ {"1478s", 1478 * Second},
+ // sign
+ {"-5s", -5 * Second},
+ {"+5s", 5 * Second},
+ {"-0", 0},
+ {"+0", 0},
+ // decimal
+ {"5.0s", 5 * Second},
+ {"5.6s", 5*Second + 600*Millisecond},
+ {"5.s", 5 * Second},
+ {".5s", 500 * Millisecond},
+ {"1.0s", 1 * Second},
+ {"1.00s", 1 * Second},
+ {"1.004s", 1*Second + 4*Millisecond},
+ {"1.0040s", 1*Second + 4*Millisecond},
+ {"100.00100s", 100*Second + 1*Millisecond},
+ // different units
+ {"10ns", 10 * Nanosecond},
+ {"11us", 11 * Microsecond},
+ {"12µs", 12 * Microsecond}, // U+00B5
+ {"12μs", 12 * Microsecond}, // U+03BC
+ {"13ms", 13 * Millisecond},
+ {"14s", 14 * Second},
+ {"15m", 15 * Minute},
+ {"16h", 16 * Hour},
+ // composite durations
+ {"3h30m", 3*Hour + 30*Minute},
+ {"10.5s4m", 4*Minute + 10*Second + 500*Millisecond},
+ {"-2m3.4s", -(2*Minute + 3*Second + 400*Millisecond)},
+ {"1h2m3s4ms5us6ns", 1*Hour + 2*Minute + 3*Second + 4*Millisecond + 5*Microsecond + 6*Nanosecond},
+ {"39h9m14.425s", 39*Hour + 9*Minute + 14*Second + 425*Millisecond},
+ // large value
+ {"52763797000ns", 52763797000 * Nanosecond},
+ // more than 9 digits after decimal point, see https://golang.org/issue/6617
+ {"0.3333333333333333333h", 20 * Minute},
+ // 9007199254740993 = 1<<53+1 cannot be stored precisely in a float64
+ {"9007199254740993ns", (1<<53 + 1) * Nanosecond},
+ // largest duration that can be represented by int64 in nanoseconds
+ {"9223372036854775807ns", (1<<63 - 1) * Nanosecond},
+ {"9223372036854775.807us", (1<<63 - 1) * Nanosecond},
+ {"9223372036s854ms775us807ns", (1<<63 - 1) * Nanosecond},
+ {"-9223372036854775808ns", -1 << 63 * Nanosecond},
+ {"-9223372036854775.808us", -1 << 63 * Nanosecond},
+ {"-9223372036s854ms775us808ns", -1 << 63 * Nanosecond},
+ // largest negative value
+ {"-9223372036854775808ns", -1 << 63 * Nanosecond},
+ // largest negative round trip value, see https://golang.org/issue/48629
+ {"-2562047h47m16.854775808s", -1 << 63 * Nanosecond},
+ // huge string; issue 15011.
+ {"0.100000000000000000000h", 6 * Minute},
+ // This value tests the first overflow check in leadingFraction.
+ {"0.830103483285477580700h", 49*Minute + 48*Second + 372539827*Nanosecond},
+}
+
+func TestParseDuration(t *testing.T) {
+ for _, tc := range parseDurationTests {
+ d, err := ParseDuration(tc.in)
+ if err != nil || d != tc.want {
+ t.Errorf("ParseDuration(%q) = %v, %v, want %v, nil", tc.in, d, err, tc.want)
+ }
+ }
+}
+
+var parseDurationErrorTests = []struct {
+ in string
+ expect string
+}{
+ // invalid
+ {"", `""`},
+ {"3", `"3"`},
+ {"-", `"-"`},
+ {"s", `"s"`},
+ {".", `"."`},
+ {"-.", `"-."`},
+ {".s", `".s"`},
+ {"+.s", `"+.s"`},
+ {"1d", `"1d"`},
+ {"\x85\x85", `"\x85\x85"`},
+ {"\xffff", `"\xffff"`},
+ {"hello \xffff world", `"hello \xffff world"`},
+ {"\uFFFD", `"\xef\xbf\xbd"`}, // utf8.RuneError
+ {"\uFFFD hello \uFFFD world", `"\xef\xbf\xbd hello \xef\xbf\xbd world"`}, // utf8.RuneError
+ // overflow
+ {"9223372036854775810ns", `"9223372036854775810ns"`},
+ {"9223372036854775808ns", `"9223372036854775808ns"`},
+ {"-9223372036854775809ns", `"-9223372036854775809ns"`},
+ {"9223372036854776us", `"9223372036854776us"`},
+ {"3000000h", `"3000000h"`},
+ {"9223372036854775.808us", `"9223372036854775.808us"`},
+ {"9223372036854ms775us808ns", `"9223372036854ms775us808ns"`},
+}
+
+func TestParseDurationErrors(t *testing.T) {
+ for _, tc := range parseDurationErrorTests {
+ _, err := ParseDuration(tc.in)
+ if err == nil {
+ t.Errorf("ParseDuration(%q) = _, nil, want _, non-nil", tc.in)
+ } else if !strings.Contains(err.Error(), tc.expect) {
+ t.Errorf("ParseDuration(%q) = _, %q, error does not contain %q", tc.in, err, tc.expect)
+ }
+ }
+}
+
+func TestParseDurationRoundTrip(t *testing.T) {
+ // https://golang.org/issue/48629
+ max0 := Duration(math.MaxInt64)
+ max1, err := ParseDuration(max0.String())
+ if err != nil || max0 != max1 {
+ t.Errorf("round-trip failed: %d => %q => %d, %v", max0, max0.String(), max1, err)
+ }
+
+ min0 := Duration(math.MinInt64)
+ min1, err := ParseDuration(min0.String())
+ if err != nil || min0 != min1 {
+ t.Errorf("round-trip failed: %d => %q => %d, %v", min0, min0.String(), min1, err)
+ }
+
+ 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() }},
+ {0, `time.Now().UnixMilli()`, func() { u = Now().UnixMilli() }},
+ {0, `time.Now().UnixMicro()`, func() { u = Now().UnixMicro() }},
+}
+
+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)},
+ {Date(2311, 11, 26, 02, 16, 47, 63535996, UTC), Date(2019, 8, 16, 2, 29, 30, 268436582, UTC), 9223372036795099414},
+ {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("Duration(%s).Nanoseconds() = %d; want: %d", tt.d, got, tt.want)
+ }
+ }
+}
+
+var usDurationTests = []struct {
+ d Duration
+ want int64
+}{
+ {Duration(-1000), -1},
+ {Duration(1000), 1},
+}
+
+func TestDurationMicroseconds(t *testing.T) {
+ for _, tt := range usDurationTests {
+ if got := tt.d.Microseconds(); got != tt.want {
+ t.Errorf("Duration(%s).Microseconds() = %d; want: %d", tt.d, got, tt.want)
+ }
+ }
+}
+
+var msDurationTests = []struct {
+ d Duration
+ want int64
+}{
+ {Duration(-1000000), -1},
+ {Duration(1000000), 1},
+}
+
+func TestDurationMilliseconds(t *testing.T) {
+ for _, tt := range msDurationTests {
+ if got := tt.d.Milliseconds(); got != tt.want {
+ t.Errorf("Duration(%s).Milliseconds() = %d; want: %d", tt.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("Duration(%s).Seconds() = %g; want: %g", tt.d, 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("Duration(%s).Minutes() = %g; want: %g", tt.d, 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("Duration(%s).Hours() = %g; want: %g", tt.d, 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 durationAbsTests = []struct {
+ d Duration
+ want Duration
+}{
+ {0, 0},
+ {1, 1},
+ {-1, 1},
+ {1 * Minute, 1 * Minute},
+ {-1 * Minute, 1 * Minute},
+ {minDuration, maxDuration},
+ {minDuration + 1, maxDuration},
+ {minDuration + 2, maxDuration - 1},
+ {maxDuration, maxDuration},
+ {maxDuration - 1, maxDuration - 1},
+}
+
+func TestDurationAbs(t *testing.T) {
+ for _, tt := range durationAbsTests {
+ if got := tt.d.Abs(); got != tt.want {
+ t.Errorf("Duration(%s).Abs() = %s; want: %s", tt.d, 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() }},
+ {"UnixMilli", func(t1, t2 Time) bool { return t1.UnixMilli() == t2.UnixMilli() }},
+ {"UnixMicro", func(t1, t2 Time) bool { return t1.UnixMicro() == t2.UnixMicro() }},
+
+ {"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 BenchmarkNowUnixMilli(b *testing.B) {
+ for i := 0; i < b.N; i++ {
+ u = Now().UnixMilli()
+ }
+}
+
+func BenchmarkNowUnixMicro(b *testing.B) {
+ for i := 0; i < b.N; i++ {
+ u = Now().UnixMicro()
+ }
+}
+
+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 BenchmarkISOWeek(b *testing.B) {
+ t := Now()
+ for i := 0; i < b.N; i++ {
+ _, _ = t.ISOWeek()
+ }
+}
+
+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)
+ }
+}
+
+func TestMarshalBinaryVersion2(t *testing.T) {
+ t0, err := Parse(RFC3339, "1880-01-01T00:00:00Z")
+ if err != nil {
+ t.Errorf("Failed to parse time, error = %v", err)
+ }
+ loc, err := LoadLocation("US/Eastern")
+ if err != nil {
+ t.Errorf("Failed to load location, error = %v", err)
+ }
+ t1 := t0.In(loc)
+ b, err := t1.MarshalBinary()
+ if err != nil {
+ t.Errorf("Failed to Marshal, error = %v", err)
+ }
+
+ t2 := Time{}
+ err = t2.UnmarshalBinary(b)
+ if err != nil {
+ t.Errorf("Failed to Unmarshal, error = %v", err)
+ }
+
+ if !(t0.Equal(t1) && t1.Equal(t2)) {
+ if !t0.Equal(t1) {
+ t.Errorf("The result t1: %+v after Marshal is not matched original t0: %+v", t1, t0)
+ }
+ if !t1.Equal(t2) {
+ t.Errorf("The result t2: %+v after Unmarshal is not matched original t1: %+v", t2, 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.
+// Issue 37400: panic with "racy use of timers"
+// This test deliberately invokes a race condition.
+// We are testing that we don't crash with "fatal error: panic holding locks",
+// and that we also don't panic.
+func TestConcurrentTimerReset(t *testing.T) {
+ 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()
+ for j := 0; j < tries; j++ {
+ timer.Reset(Hour + Duration(i*j))
+ }
+ }(i)
+ }
+ wg.Wait()
+}
+
+// Issue 37400: panic with "racy use of timers".
+func TestConcurrentTimerResetStop(t *testing.T) {
+ const goroutines = 8
+ const tries = 1000
+ var wg sync.WaitGroup
+ wg.Add(goroutines * 2)
+ timer := NewTimer(Hour)
+ for i := 0; i < goroutines; i++ {
+ go func(i int) {
+ defer wg.Done()
+ for j := 0; j < tries; j++ {
+ timer.Reset(Hour + Duration(i*j))
+ }
+ }(i)
+ go func(i int) {
+ defer wg.Done()
+ timer.Stop()
+ }(i)
+ }
+ wg.Wait()
+}
+
+func TestTimeIsDST(t *testing.T) {
+ undo := DisablePlatformSources()
+ defer undo()
+
+ tzWithDST, err := LoadLocation("Australia/Sydney")
+ if err != nil {
+ t.Fatalf("could not load tz 'Australia/Sydney': %v", err)
+ }
+ tzWithoutDST, err := LoadLocation("Australia/Brisbane")
+ if err != nil {
+ t.Fatalf("could not load tz 'Australia/Brisbane': %v", err)
+ }
+ tzFixed := FixedZone("FIXED_TIME", 12345)
+
+ tests := [...]struct {
+ time Time
+ want bool
+ }{
+ 0: {Date(2009, 1, 1, 12, 0, 0, 0, UTC), false},
+ 1: {Date(2009, 6, 1, 12, 0, 0, 0, UTC), false},
+ 2: {Date(2009, 1, 1, 12, 0, 0, 0, tzWithDST), true},
+ 3: {Date(2009, 6, 1, 12, 0, 0, 0, tzWithDST), false},
+ 4: {Date(2009, 1, 1, 12, 0, 0, 0, tzWithoutDST), false},
+ 5: {Date(2009, 6, 1, 12, 0, 0, 0, tzWithoutDST), false},
+ 6: {Date(2009, 1, 1, 12, 0, 0, 0, tzFixed), false},
+ 7: {Date(2009, 6, 1, 12, 0, 0, 0, tzFixed), false},
+ }
+
+ for i, tt := range tests {
+ got := tt.time.IsDST()
+ if got != tt.want {
+ t.Errorf("#%d:: (%#v).IsDST()=%t, want %t", i, tt.time.Format(RFC3339), got, tt.want)
+ }
+ }
+}
+
+func TestTimeAddSecOverflow(t *testing.T) {
+ // Test it with positive delta.
+ var maxInt64 int64 = 1<<63 - 1
+ timeExt := maxInt64 - UnixToInternal - 50
+ notMonoTime := Unix(timeExt, 0)
+ for i := int64(0); i < 100; i++ {
+ sec := notMonoTime.Unix()
+ notMonoTime = notMonoTime.Add(Duration(i * 1e9))
+ if newSec := notMonoTime.Unix(); newSec != sec+i && newSec+UnixToInternal != maxInt64 {
+ t.Fatalf("time ext: %d overflows with positive delta, overflow threshold: %d", newSec, maxInt64)
+ }
+ }
+
+ // Test it with negative delta.
+ maxInt64 = -maxInt64
+ notMonoTime = NotMonoNegativeTime
+ for i := int64(0); i > -100; i-- {
+ sec := notMonoTime.Unix()
+ notMonoTime = notMonoTime.Add(Duration(i * 1e9))
+ if newSec := notMonoTime.Unix(); newSec != sec+i && newSec+UnixToInternal != maxInt64 {
+ t.Fatalf("time ext: %d overflows with positive delta, overflow threshold: %d", newSec, maxInt64)
+ }
+ }
+}
+
+// Issue 49284: time: ParseInLocation incorrectly because of Daylight Saving Time
+func TestTimeWithZoneTransition(t *testing.T) {
+ undo := DisablePlatformSources()
+ defer undo()
+
+ loc, err := LoadLocation("Asia/Shanghai")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ tests := [...]struct {
+ give Time
+ want Time
+ }{
+ // 14 Apr 1991 - Daylight Saving Time Started
+ // When time of "Asia/Shanghai" was about to reach
+ // Sunday, 14 April 1991, 02:00:00 clocks were turned forward 1 hour to
+ // Sunday, 14 April 1991, 03:00:00 local daylight time instead.
+ // The UTC time was 13 April 1991, 18:00:00
+ 0: {Date(1991, April, 13, 17, 50, 0, 0, loc), Date(1991, April, 13, 9, 50, 0, 0, UTC)},
+ 1: {Date(1991, April, 13, 18, 0, 0, 0, loc), Date(1991, April, 13, 10, 0, 0, 0, UTC)},
+ 2: {Date(1991, April, 14, 1, 50, 0, 0, loc), Date(1991, April, 13, 17, 50, 0, 0, UTC)},
+ 3: {Date(1991, April, 14, 3, 0, 0, 0, loc), Date(1991, April, 13, 18, 0, 0, 0, UTC)},
+
+ // 15 Sep 1991 - Daylight Saving Time Ended
+ // When local daylight time of "Asia/Shanghai" was about to reach
+ // Sunday, 15 September 1991, 02:00:00 clocks were turned backward 1 hour to
+ // Sunday, 15 September 1991, 01:00:00 local standard time instead.
+ // The UTC time was 14 September 1991, 17:00:00
+ 4: {Date(1991, September, 14, 16, 50, 0, 0, loc), Date(1991, September, 14, 7, 50, 0, 0, UTC)},
+ 5: {Date(1991, September, 14, 17, 0, 0, 0, loc), Date(1991, September, 14, 8, 0, 0, 0, UTC)},
+ 6: {Date(1991, September, 15, 0, 50, 0, 0, loc), Date(1991, September, 14, 15, 50, 0, 0, UTC)},
+ 7: {Date(1991, September, 15, 2, 00, 0, 0, loc), Date(1991, September, 14, 18, 00, 0, 0, UTC)},
+ }
+
+ for i, tt := range tests {
+ if !tt.give.Equal(tt.want) {
+ t.Errorf("#%d:: %#v is not equal to %#v", i, tt.give.Format(RFC3339), tt.want.Format(RFC3339))
+ }
+ }
+}
+
+func TestZoneBounds(t *testing.T) {
+ undo := DisablePlatformSources()
+ defer undo()
+ loc, err := LoadLocation("Asia/Shanghai")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // The ZoneBounds of a UTC location would just return two zero Time.
+ for _, test := range utctests {
+ sec := test.seconds
+ golden := &test.golden
+ tm := Unix(sec, 0).UTC()
+ start, end := tm.ZoneBounds()
+ if !(start.IsZero() && end.IsZero()) {
+ t.Errorf("ZoneBounds of %+v expects two zero Time, got:\n start=%v\n end=%v", *golden, start, end)
+ }
+ }
+
+ // If the zone begins at the beginning of time, start will be returned as a zero Time.
+ // Use math.MinInt32 to avoid overflow of int arguments on 32-bit systems.
+ beginTime := Date(math.MinInt32, January, 1, 0, 0, 0, 0, loc)
+ start, end := beginTime.ZoneBounds()
+ if !start.IsZero() || end.IsZero() {
+ t.Errorf("ZoneBounds of %v expects start is zero Time, got:\n start=%v\n end=%v", beginTime, start, end)
+ }
+
+ // If the zone goes on forever, end will be returned as a zero Time.
+ // Use math.MaxInt32 to avoid overflow of int arguments on 32-bit systems.
+ foreverTime := Date(math.MaxInt32, January, 1, 0, 0, 0, 0, loc)
+ start, end = foreverTime.ZoneBounds()
+ if start.IsZero() || !end.IsZero() {
+ t.Errorf("ZoneBounds of %v expects end is zero Time, got:\n start=%v\n end=%v", foreverTime, start, end)
+ }
+
+ // Check some real-world cases to make sure we're getting the right bounds.
+ boundOne := Date(1990, September, 16, 1, 0, 0, 0, loc)
+ boundTwo := Date(1991, April, 14, 3, 0, 0, 0, loc)
+ boundThree := Date(1991, September, 15, 1, 0, 0, 0, loc)
+ makeLocalTime := func(sec int64) Time { return Unix(sec, 0) }
+ realTests := [...]struct {
+ giveTime Time
+ wantStart Time
+ wantEnd Time
+ }{
+ // The ZoneBounds of "Asia/Shanghai" Daylight Saving Time
+ 0: {Date(1991, April, 13, 17, 50, 0, 0, loc), boundOne, boundTwo},
+ 1: {Date(1991, April, 13, 18, 0, 0, 0, loc), boundOne, boundTwo},
+ 2: {Date(1991, April, 14, 1, 50, 0, 0, loc), boundOne, boundTwo},
+ 3: {boundTwo, boundTwo, boundThree},
+ 4: {Date(1991, September, 14, 16, 50, 0, 0, loc), boundTwo, boundThree},
+ 5: {Date(1991, September, 14, 17, 0, 0, 0, loc), boundTwo, boundThree},
+ 6: {Date(1991, September, 15, 0, 50, 0, 0, loc), boundTwo, boundThree},
+
+ // The ZoneBounds of a "Asia/Shanghai" after the last transition (Standard Time)
+ 7: {boundThree, boundThree, Time{}},
+ 8: {Date(1991, December, 15, 1, 50, 0, 0, loc), boundThree, Time{}},
+ 9: {Date(1992, April, 13, 17, 50, 0, 0, loc), boundThree, Time{}},
+ 10: {Date(1992, April, 13, 18, 0, 0, 0, loc), boundThree, Time{}},
+ 11: {Date(1992, April, 14, 1, 50, 0, 0, loc), boundThree, Time{}},
+ 12: {Date(1992, September, 14, 16, 50, 0, 0, loc), boundThree, Time{}},
+ 13: {Date(1992, September, 14, 17, 0, 0, 0, loc), boundThree, Time{}},
+ 14: {Date(1992, September, 15, 0, 50, 0, 0, loc), boundThree, Time{}},
+
+ // The ZoneBounds of a local time would return two local Time.
+ // Note: We preloaded "America/Los_Angeles" as time.Local for testing
+ 15: {makeLocalTime(0), makeLocalTime(-5756400), makeLocalTime(9972000)},
+ 16: {makeLocalTime(1221681866), makeLocalTime(1205056800), makeLocalTime(1225616400)},
+ 17: {makeLocalTime(2152173599), makeLocalTime(2145916800), makeLocalTime(2152173600)},
+ 18: {makeLocalTime(2152173600), makeLocalTime(2152173600), makeLocalTime(2172733200)},
+ 19: {makeLocalTime(2152173601), makeLocalTime(2152173600), makeLocalTime(2172733200)},
+ 20: {makeLocalTime(2159200800), makeLocalTime(2152173600), makeLocalTime(2172733200)},
+ 21: {makeLocalTime(2172733199), makeLocalTime(2152173600), makeLocalTime(2172733200)},
+ 22: {makeLocalTime(2172733200), makeLocalTime(2172733200), makeLocalTime(2177452800)},
+ }
+ for i, tt := range realTests {
+ start, end := tt.giveTime.ZoneBounds()
+ if !start.Equal(tt.wantStart) || !end.Equal(tt.wantEnd) {
+ t.Errorf("#%d:: ZoneBounds of %v expects right bounds:\n got start=%v\n want start=%v\n got end=%v\n want end=%v",
+ i, tt.giveTime, start, tt.wantStart, end, tt.wantEnd)
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 23:49:13 +0000