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Reverting merge from trunk
[official-gcc.git] / libgo / go / time / time_test.go
blob22b751c5255b60b4680a7011ff3706f1c1703e7f
1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 package time_test
6
7 import (
8 "bytes"
9 "encoding/gob"
10 "encoding/json"
11 "fmt"
12 "math/big"
13 "math/rand"
14 "runtime"
15 "strconv"
16 "strings"
17 "testing"
18 "testing/quick"
19 . "time"
20 )
21
22 // We should be in PST/PDT, but if the time zone files are missing we
23 // won't be. The purpose of this test is to at least explain why some of
24 // the subsequent tests fail.
25 func TestZoneData(t *testing.T) {
26 lt := Now()
27 // PST is 8 hours west, PDT is 7 hours west. We could use the name but it's not unique.
28 if name, off := lt.Zone(); off != -8*60*60 && off != -7*60*60 {
29 t.Errorf("Unable to find US Pacific time zone data for testing; time zone is %q offset %d", name, off)
30 t.Error("Likely problem: the time zone files have not been installed.")
31 }
32 }
33
34 // parsedTime is the struct representing a parsed time value.
35 type parsedTime struct {
36 Year int
37 Month Month
38 Day int
39 Hour, Minute, Second int // 15:04:05 is 15, 4, 5.
40 Nanosecond int // Fractional second.
41 Weekday Weekday
42 ZoneOffset int // seconds east of UTC, e.g. -7*60*60 for -0700
43 Zone string // e.g., "MST"
44 }
45
46 type TimeTest struct {
47 seconds int64
48 golden parsedTime
49 }
50
51 var utctests = []TimeTest{
52 {0, parsedTime{1970, January, 1, 0, 0, 0, 0, Thursday, 0, "UTC"}},
53 {1221681866, parsedTime{2008, September, 17, 20, 4, 26, 0, Wednesday, 0, "UTC"}},
54 {-1221681866, parsedTime{1931, April, 16, 3, 55, 34, 0, Thursday, 0, "UTC"}},
55 {-11644473600, parsedTime{1601, January, 1, 0, 0, 0, 0, Monday, 0, "UTC"}},
56 {599529660, parsedTime{1988, December, 31, 0, 1, 0, 0, Saturday, 0, "UTC"}},
57 {978220860, parsedTime{2000, December, 31, 0, 1, 0, 0, Sunday, 0, "UTC"}},
58 }
59
60 var nanoutctests = []TimeTest{
61 {0, parsedTime{1970, January, 1, 0, 0, 0, 1e8, Thursday, 0, "UTC"}},
62 {1221681866, parsedTime{2008, September, 17, 20, 4, 26, 2e8, Wednesday, 0, "UTC"}},
63 }
64
65 var localtests = []TimeTest{
66 {0, parsedTime{1969, December, 31, 16, 0, 0, 0, Wednesday, -8 * 60 * 60, "PST"}},
67 {1221681866, parsedTime{2008, September, 17, 13, 4, 26, 0, Wednesday, -7 * 60 * 60, "PDT"}},
68 }
69
70 var nanolocaltests = []TimeTest{
71 {0, parsedTime{1969, December, 31, 16, 0, 0, 1e8, Wednesday, -8 * 60 * 60, "PST"}},
72 {1221681866, parsedTime{2008, September, 17, 13, 4, 26, 3e8, Wednesday, -7 * 60 * 60, "PDT"}},
73 }
74
75 func same(t Time, u *parsedTime) bool {
76 // Check aggregates.
77 year, month, day := t.Date()
78 hour, min, sec := t.Clock()
79 name, offset := t.Zone()
80 if year != u.Year || month != u.Month || day != u.Day ||
81 hour != u.Hour || min != u.Minute || sec != u.Second ||
82 name != u.Zone || offset != u.ZoneOffset {
83 return false
84 }
85 // Check individual entries.
86 return t.Year() == u.Year &&
87 t.Month() == u.Month &&
88 t.Day() == u.Day &&
89 t.Hour() == u.Hour &&
90 t.Minute() == u.Minute &&
91 t.Second() == u.Second &&
92 t.Nanosecond() == u.Nanosecond &&
93 t.Weekday() == u.Weekday
94 }
95
96 func TestSecondsToUTC(t *testing.T) {
97 for _, test := range utctests {
98 sec := test.seconds
99 golden := &test.golden
100 tm := Unix(sec, 0).UTC()
101 newsec := tm.Unix()
102 if newsec != sec {
103 t.Errorf("SecondsToUTC(%d).Seconds() = %d", sec, newsec)
104 }
105 if !same(tm, golden) {
106 t.Errorf("SecondsToUTC(%d): // %#v", sec, tm)
107 t.Errorf(" want=%+v", *golden)
108 t.Errorf(" have=%v", tm.Format(RFC3339+" MST"))
109 }
110 }
111 }
112
113 func TestNanosecondsToUTC(t *testing.T) {
114 for _, test := range nanoutctests {
115 golden := &test.golden
116 nsec := test.seconds*1e9 + int64(golden.Nanosecond)
117 tm := Unix(0, nsec).UTC()
118 newnsec := tm.Unix()*1e9 + int64(tm.Nanosecond())
119 if newnsec != nsec {
120 t.Errorf("NanosecondsToUTC(%d).Nanoseconds() = %d", nsec, newnsec)
121 }
122 if !same(tm, golden) {
123 t.Errorf("NanosecondsToUTC(%d):", nsec)
124 t.Errorf(" want=%+v", *golden)
125 t.Errorf(" have=%+v", tm.Format(RFC3339+" MST"))
126 }
127 }
128 }
129
130 func TestSecondsToLocalTime(t *testing.T) {
131 for _, test := range localtests {
132 sec := test.seconds
133 golden := &test.golden
134 tm := Unix(sec, 0)
135 newsec := tm.Unix()
136 if newsec != sec {
137 t.Errorf("SecondsToLocalTime(%d).Seconds() = %d", sec, newsec)
138 }
139 if !same(tm, golden) {
140 t.Errorf("SecondsToLocalTime(%d):", sec)
141 t.Errorf(" want=%+v", *golden)
142 t.Errorf(" have=%+v", tm.Format(RFC3339+" MST"))
143 }
144 }
145 }
146
147 func TestNanosecondsToLocalTime(t *testing.T) {
148 for _, test := range nanolocaltests {
149 golden := &test.golden
150 nsec := test.seconds*1e9 + int64(golden.Nanosecond)
151 tm := Unix(0, nsec)
152 newnsec := tm.Unix()*1e9 + int64(tm.Nanosecond())
153 if newnsec != nsec {
154 t.Errorf("NanosecondsToLocalTime(%d).Seconds() = %d", nsec, newnsec)
155 }
156 if !same(tm, golden) {
157 t.Errorf("NanosecondsToLocalTime(%d):", nsec)
158 t.Errorf(" want=%+v", *golden)
159 t.Errorf(" have=%+v", tm.Format(RFC3339+" MST"))
160 }
161 }
162 }
163
164 func TestSecondsToUTCAndBack(t *testing.T) {
165 f := func(sec int64) bool { return Unix(sec, 0).UTC().Unix() == sec }
166 f32 := func(sec int32) bool { return f(int64(sec)) }
167 cfg := &quick.Config{MaxCount: 10000}
168
169 // Try a reasonable date first, then the huge ones.
170 if err := quick.Check(f32, cfg); err != nil {
171 t.Fatal(err)
172 }
173 if err := quick.Check(f, cfg); err != nil {
174 t.Fatal(err)
175 }
176 }
177
178 func TestNanosecondsToUTCAndBack(t *testing.T) {
179 f := func(nsec int64) bool {
180 t := Unix(0, nsec).UTC()
181 ns := t.Unix()*1e9 + int64(t.Nanosecond())
182 return ns == nsec
183 }
184 f32 := func(nsec int32) bool { return f(int64(nsec)) }
185 cfg := &quick.Config{MaxCount: 10000}
186
187 // Try a small date first, then the large ones. (The span is only a few hundred years
188 // for nanoseconds in an int64.)
189 if err := quick.Check(f32, cfg); err != nil {
190 t.Fatal(err)
191 }
192 if err := quick.Check(f, cfg); err != nil {
193 t.Fatal(err)
194 }
195 }
196
197 // The time routines provide no way to get absolute time
198 // (seconds since zero), but we need it to compute the right
199 // answer for bizarre roundings like "to the nearest 3 ns".
200 // Compute as t - year1 = (t - 1970) + (1970 - 2001) + (2001 - 1).
201 // t - 1970 is returned by Unix and Nanosecond.
202 // 1970 - 2001 is -(31*365+8)*86400 = -978307200 seconds.
203 // 2001 - 1 is 2000*365.2425*86400 = 63113904000 seconds.
204 const unixToZero = -978307200 + 63113904000
205
206 // abs returns the absolute time stored in t, as seconds and nanoseconds.
207 func abs(t Time) (sec, nsec int64) {
208 unix := t.Unix()
209 nano := t.Nanosecond()
210 return unix + unixToZero, int64(nano)
211 }
212
213 // absString returns abs as a decimal string.
214 func absString(t Time) string {
215 sec, nsec := abs(t)
216 if sec < 0 {
217 sec = -sec
218 nsec = -nsec
219 if nsec < 0 {
220 nsec += 1e9
221 sec--
222 }
223 return fmt.Sprintf("-%d%09d", sec, nsec)
224 }
225 return fmt.Sprintf("%d%09d", sec, nsec)
226 }
227
228 var truncateRoundTests = []struct {
229 t Time
230 d Duration
231 }{
232 {Date(-1, January, 1, 12, 15, 30, 5e8, UTC), 3},
233 {Date(-1, January, 1, 12, 15, 31, 5e8, UTC), 3},
234 {Date(2012, January, 1, 12, 15, 30, 5e8, UTC), Second},
235 {Date(2012, January, 1, 12, 15, 31, 5e8, UTC), Second},
236 }
237
238 func TestTruncateRound(t *testing.T) {
239 var (
240 bsec = new(big.Int)
241 bnsec = new(big.Int)
242 bd = new(big.Int)
243 bt = new(big.Int)
244 br = new(big.Int)
245 bq = new(big.Int)
246 b1e9 = new(big.Int)
247 )
248
249 b1e9.SetInt64(1e9)
250
251 testOne := func(ti, tns, di int64) bool {
252 t0 := Unix(ti, int64(tns)).UTC()
253 d := Duration(di)
254 if d < 0 {
255 d = -d
256 }
257 if d <= 0 {
258 d = 1
259 }
260
261 // Compute bt = absolute nanoseconds.
262 sec, nsec := abs(t0)
263 bsec.SetInt64(sec)
264 bnsec.SetInt64(nsec)
265 bt.Mul(bsec, b1e9)
266 bt.Add(bt, bnsec)
267
268 // Compute quotient and remainder mod d.
269 bd.SetInt64(int64(d))
270 bq.DivMod(bt, bd, br)
271
272 // To truncate, subtract remainder.
273 // br is < d, so it fits in an int64.
274 r := br.Int64()
275 t1 := t0.Add(-Duration(r))
276
277 // Check that time.Truncate works.
278 if trunc := t0.Truncate(d); trunc != t1 {
279 t.Errorf("Time.Truncate(%s, %s) = %s, want %s\n"+
280 "%v trunc %v =\n%v want\n%v",
281 t0.Format(RFC3339Nano), d, trunc, t1.Format(RFC3339Nano),
282 absString(t0), int64(d), absString(trunc), absString(t1))
283 return false
284 }
285
286 // To round, add d back if remainder r > d/2 or r == exactly d/2.
287 // The commented out code would round half to even instead of up,
288 // but that makes it time-zone dependent, which is a bit strange.
289 if r > int64(d)/2 || r+r == int64(d) /*&& bq.Bit(0) == 1*/ {
290 t1 = t1.Add(Duration(d))
291 }
292
293 // Check that time.Round works.
294 if rnd := t0.Round(d); rnd != t1 {
295 t.Errorf("Time.Round(%s, %s) = %s, want %s\n"+
296 "%v round %v =\n%v want\n%v",
297 t0.Format(RFC3339Nano), d, rnd, t1.Format(RFC3339Nano),
298 absString(t0), int64(d), absString(rnd), absString(t1))
299 return false
300 }
301 return true
302 }
303
304 // manual test cases
305 for _, tt := range truncateRoundTests {
306 testOne(tt.t.Unix(), int64(tt.t.Nanosecond()), int64(tt.d))
307 }
308
309 // exhaustive near 0
310 for i := 0; i < 100; i++ {
311 for j := 1; j < 100; j++ {
312 testOne(unixToZero, int64(i), int64(j))
313 testOne(unixToZero, -int64(i), int64(j))
314 if t.Failed() {
315 return
316 }
317 }
318 }
319
320 if t.Failed() {
321 return
322 }
323
324 // randomly generated test cases
325 cfg := &quick.Config{MaxCount: 100000}
326 if testing.Short() {
327 cfg.MaxCount = 1000
328 }
329
330 // divisors of Second
331 f1 := func(ti int64, tns int32, logdi int32) bool {
332 d := Duration(1)
333 a, b := uint(logdi%9), (logdi>>16)%9
334 d <<= a
335 for i := 0; i < int(b); i++ {
336 d *= 5
337 }
338 return testOne(ti, int64(tns), int64(d))
339 }
340 quick.Check(f1, cfg)
341
342 // multiples of Second
343 f2 := func(ti int64, tns int32, di int32) bool {
344 d := Duration(di) * Second
345 if d < 0 {
346 d = -d
347 }
348 return testOne(ti, int64(tns), int64(d))
349 }
350 quick.Check(f2, cfg)
351
352 // halfway cases
353 f3 := func(tns, di int64) bool {
354 di &= 0xfffffffe
355 if di == 0 {
356 di = 2
357 }
358 tns -= tns % di
359 if tns < 0 {
360 tns += di / 2
361 } else {
362 tns -= di / 2
363 }
364 return testOne(0, tns, di)
365 }
366 quick.Check(f3, cfg)
367
368 // full generality
369 f4 := func(ti int64, tns int32, di int64) bool {
370 return testOne(ti, int64(tns), di)
371 }
372 quick.Check(f4, cfg)
373 }
374
375 type TimeFormatTest struct {
376 time Time
377 formattedValue string
378 }
379
380 var rfc3339Formats = []TimeFormatTest{
381 {Date(2008, 9, 17, 20, 4, 26, 0, UTC), "2008-09-17T20:04:26Z"},
382 {Date(1994, 9, 17, 20, 4, 26, 0, FixedZone("EST", -18000)), "1994-09-17T20:04:26-05:00"},
383 {Date(2000, 12, 26, 1, 15, 6, 0, FixedZone("OTO", 15600)), "2000-12-26T01:15:06+04:20"},
384 }
385
386 func TestRFC3339Conversion(t *testing.T) {
387 for _, f := range rfc3339Formats {
388 if f.time.Format(RFC3339) != f.formattedValue {
389 t.Error("RFC3339:")
390 t.Errorf(" want=%+v", f.formattedValue)
391 t.Errorf(" have=%+v", f.time.Format(RFC3339))
392 }
393 }
394 }
395
396 type FormatTest struct {
397 name string
398 format string
399 result string
400 }
401
402 var formatTests = []FormatTest{
403 {"ANSIC", ANSIC, "Wed Feb 4 21:00:57 2009"},
404 {"UnixDate", UnixDate, "Wed Feb 4 21:00:57 PST 2009"},
405 {"RubyDate", RubyDate, "Wed Feb 04 21:00:57 -0800 2009"},
406 {"RFC822", RFC822, "04 Feb 09 21:00 PST"},
407 {"RFC850", RFC850, "Wednesday, 04-Feb-09 21:00:57 PST"},
408 {"RFC1123", RFC1123, "Wed, 04 Feb 2009 21:00:57 PST"},
409 {"RFC1123Z", RFC1123Z, "Wed, 04 Feb 2009 21:00:57 -0800"},
410 {"RFC3339", RFC3339, "2009-02-04T21:00:57-08:00"},
411 {"RFC3339Nano", RFC3339Nano, "2009-02-04T21:00:57.0123456-08:00"},
412 {"Kitchen", Kitchen, "9:00PM"},
413 {"am/pm", "3pm", "9pm"},
414 {"AM/PM", "3PM", "9PM"},
415 {"two-digit year", "06 01 02", "09 02 04"},
416 // Three-letter months and days must not be followed by lower-case letter.
417 {"Janet", "Hi Janet, the Month is January", "Hi Janet, the Month is February"},
418 // Time stamps, Fractional seconds.
419 {"Stamp", Stamp, "Feb 4 21:00:57"},
420 {"StampMilli", StampMilli, "Feb 4 21:00:57.012"},
421 {"StampMicro", StampMicro, "Feb 4 21:00:57.012345"},
422 {"StampNano", StampNano, "Feb 4 21:00:57.012345600"},
423 }
424
425 func TestFormat(t *testing.T) {
426 // The numeric time represents Thu Feb 4 21:00:57.012345600 PST 2010
427 time := Unix(0, 1233810057012345600)
428 for _, test := range formatTests {
429 result := time.Format(test.format)
430 if result != test.result {
431 t.Errorf("%s expected %q got %q", test.name, test.result, result)
432 }
433 }
434 }
435
436 func TestFormatShortYear(t *testing.T) {
437 years := []int{
438 -100001, -100000, -99999,
439 -10001, -10000, -9999,
440 -1001, -1000, -999,
441 -101, -100, -99,
442 -11, -10, -9,
443 -1, 0, 1,
444 9, 10, 11,
445 99, 100, 101,
446 999, 1000, 1001,
447 9999, 10000, 10001,
448 99999, 100000, 100001,
449 }
450
451 for _, y := range years {
452 time := Date(y, January, 1, 0, 0, 0, 0, UTC)
453 result := time.Format("2006.01.02")
454 var want string
455 if y < 0 {
456 // The 4 in %04d counts the - sign, so print -y instead
457 // and introduce our own - sign.
458 want = fmt.Sprintf("-%04d.%02d.%02d", -y, 1, 1)
459 } else {
460 want = fmt.Sprintf("%04d.%02d.%02d", y, 1, 1)
461 }
462 if result != want {
463 t.Errorf("(jan 1 %d).Format(\"2006.01.02\") = %q, want %q", y, result, want)
464 }
465 }
466 }
467
468 type ParseTest struct {
469 name string
470 format string
471 value string
472 hasTZ bool // contains a time zone
473 hasWD bool // contains a weekday
474 yearSign int // sign of year, -1 indicates the year is not present in the format
475 fracDigits int // number of digits of fractional second
476 }
477
478 var parseTests = []ParseTest{
479 {"ANSIC", ANSIC, "Thu Feb 4 21:00:57 2010", false, true, 1, 0},
480 {"UnixDate", UnixDate, "Thu Feb 4 21:00:57 PST 2010", true, true, 1, 0},
481 {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0800 2010", true, true, 1, 0},
482 {"RFC850", RFC850, "Thursday, 04-Feb-10 21:00:57 PST", true, true, 1, 0},
483 {"RFC1123", RFC1123, "Thu, 04 Feb 2010 21:00:57 PST", true, true, 1, 0},
484 {"RFC1123", RFC1123, "Thu, 04 Feb 2010 22:00:57 PDT", true, true, 1, 0},
485 {"RFC1123Z", RFC1123Z, "Thu, 04 Feb 2010 21:00:57 -0800", true, true, 1, 0},
486 {"RFC3339", RFC3339, "2010-02-04T21:00:57-08:00", true, false, 1, 0},
487 {"custom: \"2006-01-02 15:04:05-07\"", "2006-01-02 15:04:05-07", "2010-02-04 21:00:57-08", true, false, 1, 0},
488 // Optional fractional seconds.
489 {"ANSIC", ANSIC, "Thu Feb 4 21:00:57.0 2010", false, true, 1, 1},
490 {"UnixDate", UnixDate, "Thu Feb 4 21:00:57.01 PST 2010", true, true, 1, 2},
491 {"RubyDate", RubyDate, "Thu Feb 04 21:00:57.012 -0800 2010", true, true, 1, 3},
492 {"RFC850", RFC850, "Thursday, 04-Feb-10 21:00:57.0123 PST", true, true, 1, 4},
493 {"RFC1123", RFC1123, "Thu, 04 Feb 2010 21:00:57.01234 PST", true, true, 1, 5},
494 {"RFC1123Z", RFC1123Z, "Thu, 04 Feb 2010 21:00:57.01234 -0800", true, true, 1, 5},
495 {"RFC3339", RFC3339, "2010-02-04T21:00:57.012345678-08:00", true, false, 1, 9},
496 {"custom: \"2006-01-02 15:04:05\"", "2006-01-02 15:04:05", "2010-02-04 21:00:57.0", false, false, 1, 0},
497 // Amount of white space should not matter.
498 {"ANSIC", ANSIC, "Thu Feb 4 21:00:57 2010", false, true, 1, 0},
499 {"ANSIC", ANSIC, "Thu Feb 4 21:00:57 2010", false, true, 1, 0},
500 // Case should not matter
501 {"ANSIC", ANSIC, "THU FEB 4 21:00:57 2010", false, true, 1, 0},
502 {"ANSIC", ANSIC, "thu feb 4 21:00:57 2010", false, true, 1, 0},
503 // Fractional seconds.
504 {"millisecond", "Mon Jan _2 15:04:05.000 2006", "Thu Feb 4 21:00:57.012 2010", false, true, 1, 3},
505 {"microsecond", "Mon Jan _2 15:04:05.000000 2006", "Thu Feb 4 21:00:57.012345 2010", false, true, 1, 6},
506 {"nanosecond", "Mon Jan _2 15:04:05.000000000 2006", "Thu Feb 4 21:00:57.012345678 2010", false, true, 1, 9},
507 // Leading zeros in other places should not be taken as fractional seconds.
508 {"zero1", "2006.01.02.15.04.05.0", "2010.02.04.21.00.57.0", false, false, 1, 1},
509 {"zero2", "2006.01.02.15.04.05.00", "2010.02.04.21.00.57.01", false, false, 1, 2},
510 // Month and day names only match when not followed by a lower-case letter.
511 {"Janet", "Hi Janet, the Month is January: Jan _2 15:04:05 2006", "Hi Janet, the Month is February: Feb 4 21:00:57 2010", false, true, 1, 0},
512
513 // GMT with offset.
514 {"GMT-8", UnixDate, "Fri Feb 5 05:00:57 GMT-8 2010", true, true, 1, 0},
515
516 // Accept any number of fractional second digits (including none) for .999...
517 // In Go 1, .999... was completely ignored in the format, meaning the first two
518 // cases would succeed, but the next four would not. Go 1.1 accepts all six.
519 {"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57 -0800 PST", true, false, 1, 0},
520 {"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57 -0800 PST", true, false, 1, 0},
521 {"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57.0123 -0800 PST", true, false, 1, 4},
522 {"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57.0123 -0800 PST", true, false, 1, 4},
523 {"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57.012345678 -0800 PST", true, false, 1, 9},
524 {"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57.012345678 -0800 PST", true, false, 1, 9},
525
526 // issue 4502.
527 {"", StampNano, "Feb 4 21:00:57.012345678", false, false, -1, 9},
528 {"", "Jan _2 15:04:05.999", "Feb 4 21:00:57.012300000", false, false, -1, 4},
529 {"", "Jan _2 15:04:05.999", "Feb 4 21:00:57.012345678", false, false, -1, 9},
530 {"", "Jan _2 15:04:05.999999999", "Feb 4 21:00:57.0123", false, false, -1, 4},
531 {"", "Jan _2 15:04:05.999999999", "Feb 4 21:00:57.012345678", false, false, -1, 9},
532 }
533
534 func TestParse(t *testing.T) {
535 for _, test := range parseTests {
536 time, err := Parse(test.format, test.value)
537 if err != nil {
538 t.Errorf("%s error: %v", test.name, err)
539 } else {
540 checkTime(time, &test, t)
541 }
542 }
543 }
544
545 func TestParseInSydney(t *testing.T) {
546 loc, err := LoadLocation("Australia/Sydney")
547 if err != nil {
548 t.Fatal(err)
549 }
550
551 // Check that Parse (and ParseInLocation) understand
552 // that Feb EST and Aug EST are different time zones in Sydney
553 // even though both are called EST.
554 t1, err := ParseInLocation("Jan 02 2006 MST", "Feb 01 2013 EST", loc)
555 if err != nil {
556 t.Fatal(err)
557 }
558 t2 := Date(2013, February, 1, 00, 00, 00, 0, loc)
559 if t1 != t2 {
560 t.Fatalf("ParseInLocation(Feb 01 2013 EST, Sydney) = %v, want %v", t1, t2)
561 }
562 _, offset := t1.Zone()
563 if offset != 11*60*60 {
564 t.Fatalf("ParseInLocation(Feb 01 2013 EST, Sydney).Zone = _, %d, want _, %d", offset, 11*60*60)
565 }
566
567 t1, err = ParseInLocation("Jan 02 2006 MST", "Aug 01 2013 EST", loc)
568 if err != nil {
569 t.Fatal(err)
570 }
571 t2 = Date(2013, August, 1, 00, 00, 00, 0, loc)
572 if t1 != t2 {
573 t.Fatalf("ParseInLocation(Aug 01 2013 EST, Sydney) = %v, want %v", t1, t2)
574 }
575 _, offset = t1.Zone()
576 if offset != 10*60*60 {
577 t.Fatalf("ParseInLocation(Aug 01 2013 EST, Sydney).Zone = _, %d, want _, %d", offset, 10*60*60)
578 }
579 }
580
581 var rubyTests = []ParseTest{
582 {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0800 2010", true, true, 1, 0},
583 // Ignore the time zone in the test. If it parses, it'll be OK.
584 {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0000 2010", false, true, 1, 0},
585 {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 +0000 2010", false, true, 1, 0},
586 {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 +1130 2010", false, true, 1, 0},
587 }
588
589 // Problematic time zone format needs special tests.
590 func TestRubyParse(t *testing.T) {
591 for _, test := range rubyTests {
592 time, err := Parse(test.format, test.value)
593 if err != nil {
594 t.Errorf("%s error: %v", test.name, err)
595 } else {
596 checkTime(time, &test, t)
597 }
598 }
599 }
600
601 func checkTime(time Time, test *ParseTest, t *testing.T) {
602 // The time should be Thu Feb 4 21:00:57 PST 2010
603 if test.yearSign >= 0 && test.yearSign*time.Year() != 2010 {
604 t.Errorf("%s: bad year: %d not %d", test.name, time.Year(), 2010)
605 }
606 if time.Month() != February {
607 t.Errorf("%s: bad month: %s not %s", test.name, time.Month(), February)
608 }
609 if time.Day() != 4 {
610 t.Errorf("%s: bad day: %d not %d", test.name, time.Day(), 4)
611 }
612 if time.Hour() != 21 {
613 t.Errorf("%s: bad hour: %d not %d", test.name, time.Hour(), 21)
614 }
615 if time.Minute() != 0 {
616 t.Errorf("%s: bad minute: %d not %d", test.name, time.Minute(), 0)
617 }
618 if time.Second() != 57 {
619 t.Errorf("%s: bad second: %d not %d", test.name, time.Second(), 57)
620 }
621 // Nanoseconds must be checked against the precision of the input.
622 nanosec, err := strconv.ParseUint("012345678"[:test.fracDigits]+"000000000"[:9-test.fracDigits], 10, 0)
623 if err != nil {
624 panic(err)
625 }
626 if time.Nanosecond() != int(nanosec) {
627 t.Errorf("%s: bad nanosecond: %d not %d", test.name, time.Nanosecond(), nanosec)
628 }
629 name, offset := time.Zone()
630 if test.hasTZ && offset != -28800 {
631 t.Errorf("%s: bad tz offset: %s %d not %d", test.name, name, offset, -28800)
632 }
633 if test.hasWD && time.Weekday() != Thursday {
634 t.Errorf("%s: bad weekday: %s not %s", test.name, time.Weekday(), Thursday)
635 }
636 }
637
638 func TestFormatAndParse(t *testing.T) {
639 const fmt = "Mon MST " + RFC3339 // all fields
640 f := func(sec int64) bool {
641 t1 := Unix(sec, 0)
642 if t1.Year() < 1000 || t1.Year() > 9999 {
643 // not required to work
644 return true
645 }
646 t2, err := Parse(fmt, t1.Format(fmt))
647 if err != nil {
648 t.Errorf("error: %s", err)
649 return false
650 }
651 if t1.Unix() != t2.Unix() || t1.Nanosecond() != t2.Nanosecond() {
652 t.Errorf("FormatAndParse %d: %q(%d) %q(%d)", sec, t1, t1.Unix(), t2, t2.Unix())
653 return false
654 }
655 return true
656 }
657 f32 := func(sec int32) bool { return f(int64(sec)) }
658 cfg := &quick.Config{MaxCount: 10000}
659
660 // Try a reasonable date first, then the huge ones.
661 if err := quick.Check(f32, cfg); err != nil {
662 t.Fatal(err)
663 }
664 if err := quick.Check(f, cfg); err != nil {
665 t.Fatal(err)
666 }
667 }
668
669 type ParseTimeZoneTest struct {
670 value string
671 length int
672 ok bool
673 }
674
675 var parseTimeZoneTests = []ParseTimeZoneTest{
676 {"gmt hi there", 0, false},
677 {"GMT hi there", 3, true},
678 {"GMT+12 hi there", 6, true},
679 {"GMT+00 hi there", 3, true}, // 0 or 00 is not a legal offset.
680 {"GMT-5 hi there", 5, true},
681 {"GMT-51 hi there", 3, true},
682 {"ChST hi there", 4, true},
683 {"MSDx", 3, true},
684 {"MSDY", 0, false}, // four letters must end in T.
685 {"ESAST hi", 5, true},
686 {"ESASTT hi", 0, false}, // run of upper-case letters too long.
687 {"ESATY hi", 0, false}, // five letters must end in T.
688 }
689
690 func TestParseTimeZone(t *testing.T) {
691 for _, test := range parseTimeZoneTests {
692 length, ok := ParseTimeZone(test.value)
693 if ok != test.ok {
694 t.Errorf("expected %t for %q got %t", test.ok, test.value, ok)
695 } else if length != test.length {
696 t.Errorf("expected %d for %q got %d", test.length, test.value, length)
697 }
698 }
699 }
700
701 type ParseErrorTest struct {
702 format string
703 value string
704 expect string // must appear within the error
705 }
706
707 var parseErrorTests = []ParseErrorTest{
708 {ANSIC, "Feb 4 21:00:60 2010", "cannot parse"}, // cannot parse Feb as Mon
709 {ANSIC, "Thu Feb 4 21:00:57 @2010", "cannot parse"},
710 {ANSIC, "Thu Feb 4 21:00:60 2010", "second out of range"},
711 {ANSIC, "Thu Feb 4 21:61:57 2010", "minute out of range"},
712 {ANSIC, "Thu Feb 4 24:00:60 2010", "hour out of range"},
713 {"Mon Jan _2 15:04:05.000 2006", "Thu Feb 4 23:00:59x01 2010", "cannot parse"},
714 {"Mon Jan _2 15:04:05.000 2006", "Thu Feb 4 23:00:59.xxx 2010", "cannot parse"},
715 {"Mon Jan _2 15:04:05.000 2006", "Thu Feb 4 23:00:59.-123 2010", "fractional second out of range"},
716 // issue 4502. StampNano requires exactly 9 digits of precision.
717 {StampNano, "Dec 7 11:22:01.000000", `cannot parse ".000000" as ".000000000"`},
718 {StampNano, "Dec 7 11:22:01.0000000000", "extra text: 0"},
719 // issue 4493. Helpful errors.
720 {RFC3339, "2006-01-02T15:04:05Z07:00", `parsing time "2006-01-02T15:04:05Z07:00": extra text: 07:00`},
721 {RFC3339, "2006-01-02T15:04_abc", `parsing time "2006-01-02T15:04_abc" as "2006-01-02T15:04:05Z07:00": cannot parse "_abc" as ":"`},
722 {RFC3339, "2006-01-02T15:04:05_abc", `parsing time "2006-01-02T15:04:05_abc" as "2006-01-02T15:04:05Z07:00": cannot parse "_abc" as "Z07:00"`},
723 {RFC3339, "2006-01-02T15:04:05Z_abc", `parsing time "2006-01-02T15:04:05Z_abc": extra text: _abc`},
724 }
725
726 func TestParseErrors(t *testing.T) {
727 for _, test := range parseErrorTests {
728 _, err := Parse(test.format, test.value)
729 if err == nil {
730 t.Errorf("expected error for %q %q", test.format, test.value)
731 } else if strings.Index(err.Error(), test.expect) < 0 {
732 t.Errorf("expected error with %q for %q %q; got %s", test.expect, test.format, test.value, err)
733 }
734 }
735 }
736
737 func TestNoonIs12PM(t *testing.T) {
738 noon := Date(0, January, 1, 12, 0, 0, 0, UTC)
739 const expect = "12:00PM"
740 got := noon.Format("3:04PM")
741 if got != expect {
742 t.Errorf("got %q; expect %q", got, expect)
743 }
744 got = noon.Format("03:04PM")
745 if got != expect {
746 t.Errorf("got %q; expect %q", got, expect)
747 }
748 }
749
750 func TestMidnightIs12AM(t *testing.T) {
751 midnight := Date(0, January, 1, 0, 0, 0, 0, UTC)
752 expect := "12:00AM"
753 got := midnight.Format("3:04PM")
754 if got != expect {
755 t.Errorf("got %q; expect %q", got, expect)
756 }
757 got = midnight.Format("03:04PM")
758 if got != expect {
759 t.Errorf("got %q; expect %q", got, expect)
760 }
761 }
762
763 func Test12PMIsNoon(t *testing.T) {
764 noon, err := Parse("3:04PM", "12:00PM")
765 if err != nil {
766 t.Fatal("error parsing date:", err)
767 }
768 if noon.Hour() != 12 {
769 t.Errorf("got %d; expect 12", noon.Hour())
770 }
771 noon, err = Parse("03:04PM", "12:00PM")
772 if err != nil {
773 t.Fatal("error parsing date:", err)
774 }
775 if noon.Hour() != 12 {
776 t.Errorf("got %d; expect 12", noon.Hour())
777 }
778 }
779
780 func Test12AMIsMidnight(t *testing.T) {
781 midnight, err := Parse("3:04PM", "12:00AM")
782 if err != nil {
783 t.Fatal("error parsing date:", err)
784 }
785 if midnight.Hour() != 0 {
786 t.Errorf("got %d; expect 0", midnight.Hour())
787 }
788 midnight, err = Parse("03:04PM", "12:00AM")
789 if err != nil {
790 t.Fatal("error parsing date:", err)
791 }
792 if midnight.Hour() != 0 {
793 t.Errorf("got %d; expect 0", midnight.Hour())
794 }
795 }
796
797 // Check that a time without a Zone still produces a (numeric) time zone
798 // when formatted with MST as a requested zone.
799 func TestMissingZone(t *testing.T) {
800 time, err := Parse(RubyDate, "Thu Feb 02 16:10:03 -0500 2006")
801 if err != nil {
802 t.Fatal("error parsing date:", err)
803 }
804 expect := "Thu Feb 2 16:10:03 -0500 2006" // -0500 not EST
805 str := time.Format(UnixDate) // uses MST as its time zone
806 if str != expect {
807 t.Errorf("got %s; expect %s", str, expect)
808 }
809 }
810
811 func TestMinutesInTimeZone(t *testing.T) {
812 time, err := Parse(RubyDate, "Mon Jan 02 15:04:05 +0123 2006")
813 if err != nil {
814 t.Fatal("error parsing date:", err)
815 }
816 expected := (1*60 + 23) * 60
817 _, offset := time.Zone()
818 if offset != expected {
819 t.Errorf("ZoneOffset = %d, want %d", offset, expected)
820 }
821 }
822
823 type SecondsTimeZoneOffsetTest struct {
824 format string
825 value string
826 expectedoffset int
827 }
828
829 var secondsTimeZoneOffsetTests = []SecondsTimeZoneOffsetTest{
830 {"2006-01-02T15:04:05-070000", "1871-01-01T05:33:02-003408", -(34*60 + 8)},
831 {"2006-01-02T15:04:05-07:00:00", "1871-01-01T05:33:02-00:34:08", -(34*60 + 8)},
832 {"2006-01-02T15:04:05-070000", "1871-01-01T05:33:02+003408", 34*60 + 8},
833 {"2006-01-02T15:04:05-07:00:00", "1871-01-01T05:33:02+00:34:08", 34*60 + 8},
834 {"2006-01-02T15:04:05Z070000", "1871-01-01T05:33:02-003408", -(34*60 + 8)},
835 {"2006-01-02T15:04:05Z07:00:00", "1871-01-01T05:33:02+00:34:08", 34*60 + 8},
836 }
837
838 func TestParseSecondsInTimeZone(t *testing.T) {
839 // should accept timezone offsets with seconds like: Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58
840 for _, test := range secondsTimeZoneOffsetTests {
841 time, err := Parse(test.format, test.value)
842 if err != nil {
843 t.Fatal("error parsing date:", err)
844 }
845 _, offset := time.Zone()
846 if offset != test.expectedoffset {
847 t.Errorf("ZoneOffset = %d, want %d", offset, test.expectedoffset)
848 }
849 }
850 }
851
852 func TestFormatSecondsInTimeZone(t *testing.T) {
853 d := Date(1871, 9, 17, 20, 4, 26, 0, FixedZone("LMT", -(34*60+8)))
854 timestr := d.Format("2006-01-02T15:04:05Z070000")
855 expected := "1871-09-17T20:04:26-003408"
856 if timestr != expected {
857 t.Errorf("Got %s, want %s", timestr, expected)
858 }
859 }
860
861 type ISOWeekTest struct {
862 year int // year
863 month, day int // month and day
864 yex int // expected year
865 wex int // expected week
866 }
867
868 var isoWeekTests = []ISOWeekTest{
869 {1981, 1, 1, 1981, 1}, {1982, 1, 1, 1981, 53}, {1983, 1, 1, 1982, 52},
870 {1984, 1, 1, 1983, 52}, {1985, 1, 1, 1985, 1}, {1986, 1, 1, 1986, 1},
871 {1987, 1, 1, 1987, 1}, {1988, 1, 1, 1987, 53}, {1989, 1, 1, 1988, 52},
872 {1990, 1, 1, 1990, 1}, {1991, 1, 1, 1991, 1}, {1992, 1, 1, 1992, 1},
873 {1993, 1, 1, 1992, 53}, {1994, 1, 1, 1993, 52}, {1995, 1, 2, 1995, 1},
874 {1996, 1, 1, 1996, 1}, {1996, 1, 7, 1996, 1}, {1996, 1, 8, 1996, 2},
875 {1997, 1, 1, 1997, 1}, {1998, 1, 1, 1998, 1}, {1999, 1, 1, 1998, 53},
876 {2000, 1, 1, 1999, 52}, {2001, 1, 1, 2001, 1}, {2002, 1, 1, 2002, 1},
877 {2003, 1, 1, 2003, 1}, {2004, 1, 1, 2004, 1}, {2005, 1, 1, 2004, 53},
878 {2006, 1, 1, 2005, 52}, {2007, 1, 1, 2007, 1}, {2008, 1, 1, 2008, 1},
879 {2009, 1, 1, 2009, 1}, {2010, 1, 1, 2009, 53}, {2010, 1, 1, 2009, 53},
880 {2011, 1, 1, 2010, 52}, {2011, 1, 2, 2010, 52}, {2011, 1, 3, 2011, 1},
881 {2011, 1, 4, 2011, 1}, {2011, 1, 5, 2011, 1}, {2011, 1, 6, 2011, 1},
882 {2011, 1, 7, 2011, 1}, {2011, 1, 8, 2011, 1}, {2011, 1, 9, 2011, 1},
883 {2011, 1, 10, 2011, 2}, {2011, 1, 11, 2011, 2}, {2011, 6, 12, 2011, 23},
884 {2011, 6, 13, 2011, 24}, {2011, 12, 25, 2011, 51}, {2011, 12, 26, 2011, 52},
885 {2011, 12, 27, 2011, 52}, {2011, 12, 28, 2011, 52}, {2011, 12, 29, 2011, 52},
886 {2011, 12, 30, 2011, 52}, {2011, 12, 31, 2011, 52}, {1995, 1, 1, 1994, 52},
887 {2012, 1, 1, 2011, 52}, {2012, 1, 2, 2012, 1}, {2012, 1, 8, 2012, 1},
888 {2012, 1, 9, 2012, 2}, {2012, 12, 23, 2012, 51}, {2012, 12, 24, 2012, 52},
889 {2012, 12, 30, 2012, 52}, {2012, 12, 31, 2013, 1}, {2013, 1, 1, 2013, 1},
890 {2013, 1, 6, 2013, 1}, {2013, 1, 7, 2013, 2}, {2013, 12, 22, 2013, 51},
891 {2013, 12, 23, 2013, 52}, {2013, 12, 29, 2013, 52}, {2013, 12, 30, 2014, 1},
892 {2014, 1, 1, 2014, 1}, {2014, 1, 5, 2014, 1}, {2014, 1, 6, 2014, 2},
893 {2015, 1, 1, 2015, 1}, {2016, 1, 1, 2015, 53}, {2017, 1, 1, 2016, 52},
894 {2018, 1, 1, 2018, 1}, {2019, 1, 1, 2019, 1}, {2020, 1, 1, 2020, 1},
895 {2021, 1, 1, 2020, 53}, {2022, 1, 1, 2021, 52}, {2023, 1, 1, 2022, 52},
896 {2024, 1, 1, 2024, 1}, {2025, 1, 1, 2025, 1}, {2026, 1, 1, 2026, 1},
897 {2027, 1, 1, 2026, 53}, {2028, 1, 1, 2027, 52}, {2029, 1, 1, 2029, 1},
898 {2030, 1, 1, 2030, 1}, {2031, 1, 1, 2031, 1}, {2032, 1, 1, 2032, 1},
899 {2033, 1, 1, 2032, 53}, {2034, 1, 1, 2033, 52}, {2035, 1, 1, 2035, 1},
900 {2036, 1, 1, 2036, 1}, {2037, 1, 1, 2037, 1}, {2038, 1, 1, 2037, 53},
901 {2039, 1, 1, 2038, 52}, {2040, 1, 1, 2039, 52},
902 }
903
904 func TestISOWeek(t *testing.T) {
905 // Selected dates and corner cases
906 for _, wt := range isoWeekTests {
907 dt := Date(wt.year, Month(wt.month), wt.day, 0, 0, 0, 0, UTC)
908 y, w := dt.ISOWeek()
909 if w != wt.wex || y != wt.yex {
910 t.Errorf("got %d/%d; expected %d/%d for %d-%02d-%02d",
911 y, w, wt.yex, wt.wex, wt.year, wt.month, wt.day)
912 }
913 }
914
915 // The only real invariant: Jan 04 is in week 1
916 for year := 1950; year < 2100; year++ {
917 if y, w := Date(year, January, 4, 0, 0, 0, 0, UTC).ISOWeek(); y != year || w != 1 {
918 t.Errorf("got %d/%d; expected %d/1 for Jan 04", y, w, year)
919 }
920 }
921 }
922
923 type YearDayTest struct {
924 year, month, day int
925 yday int
926 }
927
928 // Test YearDay in several different scenarios
929 // and corner cases
930 var yearDayTests = []YearDayTest{
931 // Non-leap-year tests
932 {2007, 1, 1, 1},
933 {2007, 1, 15, 15},
934 {2007, 2, 1, 32},
935 {2007, 2, 15, 46},
936 {2007, 3, 1, 60},
937 {2007, 3, 15, 74},
938 {2007, 4, 1, 91},
939 {2007, 12, 31, 365},
940
941 // Leap-year tests
942 {2008, 1, 1, 1},
943 {2008, 1, 15, 15},
944 {2008, 2, 1, 32},
945 {2008, 2, 15, 46},
946 {2008, 3, 1, 61},
947 {2008, 3, 15, 75},
948 {2008, 4, 1, 92},
949 {2008, 12, 31, 366},
950
951 // Looks like leap-year (but isn't) tests
952 {1900, 1, 1, 1},
953 {1900, 1, 15, 15},
954 {1900, 2, 1, 32},
955 {1900, 2, 15, 46},
956 {1900, 3, 1, 60},
957 {1900, 3, 15, 74},
958 {1900, 4, 1, 91},
959 {1900, 12, 31, 365},
960
961 // Year one tests (non-leap)
962 {1, 1, 1, 1},
963 {1, 1, 15, 15},
964 {1, 2, 1, 32},
965 {1, 2, 15, 46},
966 {1, 3, 1, 60},
967 {1, 3, 15, 74},
968 {1, 4, 1, 91},
969 {1, 12, 31, 365},
970
971 // Year minus one tests (non-leap)
972 {-1, 1, 1, 1},
973 {-1, 1, 15, 15},
974 {-1, 2, 1, 32},
975 {-1, 2, 15, 46},
976 {-1, 3, 1, 60},
977 {-1, 3, 15, 74},
978 {-1, 4, 1, 91},
979 {-1, 12, 31, 365},
980
981 // 400 BC tests (leap-year)
982 {-400, 1, 1, 1},
983 {-400, 1, 15, 15},
984 {-400, 2, 1, 32},
985 {-400, 2, 15, 46},
986 {-400, 3, 1, 61},
987 {-400, 3, 15, 75},
988 {-400, 4, 1, 92},
989 {-400, 12, 31, 366},
990
991 // Special Cases
992
993 // Gregorian calendar change (no effect)
994 {1582, 10, 4, 277},
995 {1582, 10, 15, 288},
996 }
997
998 // Check to see if YearDay is location sensitive
999 var yearDayLocations = []*Location{
1000 FixedZone("UTC-8", -8*60*60),
1001 FixedZone("UTC-4", -4*60*60),
1002 UTC,
1003 FixedZone("UTC+4", 4*60*60),
1004 FixedZone("UTC+8", 8*60*60),
1005 }
1006
1007 func TestYearDay(t *testing.T) {
1008 for _, loc := range yearDayLocations {
1009 for _, ydt := range yearDayTests {
1010 dt := Date(ydt.year, Month(ydt.month), ydt.day, 0, 0, 0, 0, loc)
1011 yday := dt.YearDay()
1012 if yday != ydt.yday {
1013 t.Errorf("got %d, expected %d for %d-%02d-%02d in %v",
1014 yday, ydt.yday, ydt.year, ydt.month, ydt.day, loc)
1015 }
1016 }
1017 }
1018 }
1019
1020 var durationTests = []struct {
1021 str string
1022 d Duration
1023 }{
1024 {"0", 0},
1025 {"1ns", 1 * Nanosecond},
1026 {"1.1us", 1100 * Nanosecond},
1027 {"2.2ms", 2200 * Microsecond},
1028 {"3.3s", 3300 * Millisecond},
1029 {"4m5s", 4*Minute + 5*Second},
1030 {"4m5.001s", 4*Minute + 5001*Millisecond},
1031 {"5h6m7.001s", 5*Hour + 6*Minute + 7001*Millisecond},
1032 {"8m0.000000001s", 8*Minute + 1*Nanosecond},
1033 {"2562047h47m16.854775807s", 1<<63 - 1},
1034 {"-2562047h47m16.854775808s", -1 << 63},
1035 }
1036
1037 func TestDurationString(t *testing.T) {
1038 for _, tt := range durationTests {
1039 if str := tt.d.String(); str != tt.str {
1040 t.Errorf("Duration(%d).String() = %s, want %s", int64(tt.d), str, tt.str)
1041 }
1042 if tt.d > 0 {
1043 if str := (-tt.d).String(); str != "-"+tt.str {
1044 t.Errorf("Duration(%d).String() = %s, want %s", int64(-tt.d), str, "-"+tt.str)
1045 }
1046 }
1047 }
1048 }
1049
1050 var dateTests = []struct {
1051 year, month, day, hour, min, sec, nsec int
1052 z *Location
1053 unix int64
1054 }{
1055 {2011, 11, 6, 1, 0, 0, 0, Local, 1320566400}, // 1:00:00 PDT
1056 {2011, 11, 6, 1, 59, 59, 0, Local, 1320569999}, // 1:59:59 PDT
1057 {2011, 11, 6, 2, 0, 0, 0, Local, 1320573600}, // 2:00:00 PST
1058
1059 {2011, 3, 13, 1, 0, 0, 0, Local, 1300006800}, // 1:00:00 PST
1060 {2011, 3, 13, 1, 59, 59, 0, Local, 1300010399}, // 1:59:59 PST
1061 {2011, 3, 13, 3, 0, 0, 0, Local, 1300010400}, // 3:00:00 PDT
1062 {2011, 3, 13, 2, 30, 0, 0, Local, 1300008600}, // 2:30:00 PDT ≡ 1:30 PST
1063
1064 // Many names for Fri Nov 18 7:56:35 PST 2011
1065 {2011, 11, 18, 7, 56, 35, 0, Local, 1321631795}, // Nov 18 7:56:35
1066 {2011, 11, 19, -17, 56, 35, 0, Local, 1321631795}, // Nov 19 -17:56:35
1067 {2011, 11, 17, 31, 56, 35, 0, Local, 1321631795}, // Nov 17 31:56:35
1068 {2011, 11, 18, 6, 116, 35, 0, Local, 1321631795}, // Nov 18 6:116:35
1069 {2011, 10, 49, 7, 56, 35, 0, Local, 1321631795}, // Oct 49 7:56:35
1070 {2011, 11, 18, 7, 55, 95, 0, Local, 1321631795}, // Nov 18 7:55:95
1071 {2011, 11, 18, 7, 56, 34, 1e9, Local, 1321631795}, // Nov 18 7:56:34 + 10⁹ns
1072 {2011, 12, -12, 7, 56, 35, 0, Local, 1321631795}, // Dec -21 7:56:35
1073 {2012, 1, -43, 7, 56, 35, 0, Local, 1321631795}, // Jan -52 7:56:35 2012
1074 {2012, int(January - 2), 18, 7, 56, 35, 0, Local, 1321631795}, // (Jan-2) 18 7:56:35 2012
1075 {2010, int(December + 11), 18, 7, 56, 35, 0, Local, 1321631795}, // (Dec+11) 18 7:56:35 2010
1076 }
1077
1078 func TestDate(t *testing.T) {
1079 for _, tt := range dateTests {
1080 time := Date(tt.year, Month(tt.month), tt.day, tt.hour, tt.min, tt.sec, tt.nsec, tt.z)
1081 want := Unix(tt.unix, 0)
1082 if !time.Equal(want) {
1083 t.Errorf("Date(%d, %d, %d, %d, %d, %d, %d, %s) = %v, want %v",
1084 tt.year, tt.month, tt.day, tt.hour, tt.min, tt.sec, tt.nsec, tt.z,
1085 time, want)
1086 }
1087 }
1088 }
1089
1090 // Several ways of getting from
1091 // Fri Nov 18 7:56:35 PST 2011
1092 // to
1093 // Thu Mar 19 7:56:35 PST 2016
1094 var addDateTests = []struct {
1095 years, months, days int
1096 }{
1097 {4, 4, 1},
1098 {3, 16, 1},
1099 {3, 15, 30},
1100 {5, -6, -18 - 30 - 12},
1101 }
1102
1103 func TestAddDate(t *testing.T) {
1104 t0 := Date(2011, 11, 18, 7, 56, 35, 0, UTC)
1105 t1 := Date(2016, 3, 19, 7, 56, 35, 0, UTC)
1106 for _, at := range addDateTests {
1107 time := t0.AddDate(at.years, at.months, at.days)
1108 if !time.Equal(t1) {
1109 t.Errorf("AddDate(%d, %d, %d) = %v, want %v",
1110 at.years, at.months, at.days,
1111 time, t1)
1112 }
1113 }
1114 }
1115
1116 var daysInTests = []struct {
1117 year, month, di int
1118 }{
1119 {2011, 1, 31}, // January, first month, 31 days
1120 {2011, 2, 28}, // February, non-leap year, 28 days
1121 {2012, 2, 29}, // February, leap year, 29 days
1122 {2011, 6, 30}, // June, 30 days
1123 {2011, 12, 31}, // December, last month, 31 days
1124 }
1125
1126 func TestDaysIn(t *testing.T) {
1127 // The daysIn function is not exported.
1128 // Test the daysIn function via the `var DaysIn = daysIn`
1129 // statement in the internal_test.go file.
1130 for _, tt := range daysInTests {
1131 di := DaysIn(Month(tt.month), tt.year)
1132 if di != tt.di {
1133 t.Errorf("got %d; expected %d for %d-%02d",
1134 di, tt.di, tt.year, tt.month)
1135 }
1136 }
1137 }
1138
1139 func TestAddToExactSecond(t *testing.T) {
1140 // Add an amount to the current time to round it up to the next exact second.
1141 // This test checks that the nsec field still lies within the range [0, 999999999].
1142 t1 := Now()
1143 t2 := t1.Add(Second - Duration(t1.Nanosecond()))
1144 sec := (t1.Second() + 1) % 60
1145 if t2.Second() != sec || t2.Nanosecond() != 0 {
1146 t.Errorf("sec = %d, nsec = %d, want sec = %d, nsec = 0", t2.Second(), t2.Nanosecond(), sec)
1147 }
1148 }
1149
1150 func equalTimeAndZone(a, b Time) bool {
1151 aname, aoffset := a.Zone()
1152 bname, boffset := b.Zone()
1153 return a.Equal(b) && aoffset == boffset && aname == bname
1154 }
1155
1156 var gobTests = []Time{
1157 Date(0, 1, 2, 3, 4, 5, 6, UTC),
1158 Date(7, 8, 9, 10, 11, 12, 13, FixedZone("", 0)),
1159 Unix(81985467080890095, 0x76543210), // Time.sec: 0x0123456789ABCDEF
1160 {}, // nil location
1161 Date(1, 2, 3, 4, 5, 6, 7, FixedZone("", 32767*60)),
1162 Date(1, 2, 3, 4, 5, 6, 7, FixedZone("", -32768*60)),
1163 }
1164
1165 func TestTimeGob(t *testing.T) {
1166 var b bytes.Buffer
1167 enc := gob.NewEncoder(&b)
1168 dec := gob.NewDecoder(&b)
1169 for _, tt := range gobTests {
1170 var gobtt Time
1171 if err := enc.Encode(&tt); err != nil {
1172 t.Errorf("%v gob Encode error = %q, want nil", tt, err)
1173 } else if err := dec.Decode(&gobtt); err != nil {
1174 t.Errorf("%v gob Decode error = %q, want nil", tt, err)
1175 } else if !equalTimeAndZone(gobtt, tt) {
1176 t.Errorf("Decoded time = %v, want %v", gobtt, tt)
1177 }
1178 b.Reset()
1179 }
1180 }
1181
1182 var invalidEncodingTests = []struct {
1183 bytes []byte
1184 want string
1185 }{
1186 {[]byte{}, "Time.UnmarshalBinary: no data"},
1187 {[]byte{0, 2, 3}, "Time.UnmarshalBinary: unsupported version"},
1188 {[]byte{1, 2, 3}, "Time.UnmarshalBinary: invalid length"},
1189 }
1190
1191 func TestInvalidTimeGob(t *testing.T) {
1192 for _, tt := range invalidEncodingTests {
1193 var ignored Time
1194 err := ignored.GobDecode(tt.bytes)
1195 if err == nil || err.Error() != tt.want {
1196 t.Errorf("time.GobDecode(%#v) error = %v, want %v", tt.bytes, err, tt.want)
1197 }
1198 err = ignored.UnmarshalBinary(tt.bytes)
1199 if err == nil || err.Error() != tt.want {
1200 t.Errorf("time.UnmarshalBinary(%#v) error = %v, want %v", tt.bytes, err, tt.want)
1201 }
1202 }
1203 }
1204
1205 var notEncodableTimes = []struct {
1206 time Time
1207 want string
1208 }{
1209 {Date(0, 1, 2, 3, 4, 5, 6, FixedZone("", 1)), "Time.MarshalBinary: zone offset has fractional minute"},
1210 {Date(0, 1, 2, 3, 4, 5, 6, FixedZone("", -1*60)), "Time.MarshalBinary: unexpected zone offset"},
1211 {Date(0, 1, 2, 3, 4, 5, 6, FixedZone("", -32769*60)), "Time.MarshalBinary: unexpected zone offset"},
1212 {Date(0, 1, 2, 3, 4, 5, 6, FixedZone("", 32768*60)), "Time.MarshalBinary: unexpected zone offset"},
1213 }
1214
1215 func TestNotGobEncodableTime(t *testing.T) {
1216 for _, tt := range notEncodableTimes {
1217 _, err := tt.time.GobEncode()
1218 if err == nil || err.Error() != tt.want {
1219 t.Errorf("%v GobEncode error = %v, want %v", tt.time, err, tt.want)
1220 }
1221 _, err = tt.time.MarshalBinary()
1222 if err == nil || err.Error() != tt.want {
1223 t.Errorf("%v MarshalBinary error = %v, want %v", tt.time, err, tt.want)
1224 }
1225 }
1226 }
1227
1228 var jsonTests = []struct {
1229 time Time
1230 json string
1231 }{
1232 {Date(9999, 4, 12, 23, 20, 50, 520*1e6, UTC), `"9999-04-12T23:20:50.52Z"`},
1233 {Date(1996, 12, 19, 16, 39, 57, 0, Local), `"1996-12-19T16:39:57-08:00"`},
1234 {Date(0, 1, 1, 0, 0, 0, 1, FixedZone("", 1*60)), `"0000-01-01T00:00:00.000000001+00:01"`},
1235 }
1236
1237 func TestTimeJSON(t *testing.T) {
1238 for _, tt := range jsonTests {
1239 var jsonTime Time
1240
1241 if jsonBytes, err := json.Marshal(tt.time); err != nil {
1242 t.Errorf("%v json.Marshal error = %v, want nil", tt.time, err)
1243 } else if string(jsonBytes) != tt.json {
1244 t.Errorf("%v JSON = %#q, want %#q", tt.time, string(jsonBytes), tt.json)
1245 } else if err = json.Unmarshal(jsonBytes, &jsonTime); err != nil {
1246 t.Errorf("%v json.Unmarshal error = %v, want nil", tt.time, err)
1247 } else if !equalTimeAndZone(jsonTime, tt.time) {
1248 t.Errorf("Unmarshaled time = %v, want %v", jsonTime, tt.time)
1249 }
1250 }
1251 }
1252
1253 func TestInvalidTimeJSON(t *testing.T) {
1254 var tt Time
1255 err := json.Unmarshal([]byte(`{"now is the time":"buddy"}`), &tt)
1256 _, isParseErr := err.(*ParseError)
1257 if !isParseErr {
1258 t.Errorf("expected *time.ParseError unmarshaling JSON, got %v", err)
1259 }
1260 }
1261
1262 var notJSONEncodableTimes = []struct {
1263 time Time
1264 want string
1265 }{
1266 {Date(10000, 1, 1, 0, 0, 0, 0, UTC), "Time.MarshalJSON: year outside of range [0,9999]"},
1267 {Date(-1, 1, 1, 0, 0, 0, 0, UTC), "Time.MarshalJSON: year outside of range [0,9999]"},
1268 }
1269
1270 func TestNotJSONEncodableTime(t *testing.T) {
1271 for _, tt := range notJSONEncodableTimes {
1272 _, err := tt.time.MarshalJSON()
1273 if err == nil || err.Error() != tt.want {
1274 t.Errorf("%v MarshalJSON error = %v, want %v", tt.time, err, tt.want)
1275 }
1276 }
1277 }
1278
1279 var parseDurationTests = []struct {
1280 in string
1281 ok bool
1282 want Duration
1283 }{
1284 // simple
1285 {"0", true, 0},
1286 {"5s", true, 5 * Second},
1287 {"30s", true, 30 * Second},
1288 {"1478s", true, 1478 * Second},
1289 // sign
1290 {"-5s", true, -5 * Second},
1291 {"+5s", true, 5 * Second},
1292 {"-0", true, 0},
1293 {"+0", true, 0},
1294 // decimal
1295 {"5.0s", true, 5 * Second},
1296 {"5.6s", true, 5*Second + 600*Millisecond},
1297 {"5.s", true, 5 * Second},
1298 {".5s", true, 500 * Millisecond},
1299 {"1.0s", true, 1 * Second},
1300 {"1.00s", true, 1 * Second},
1301 {"1.004s", true, 1*Second + 4*Millisecond},
1302 {"1.0040s", true, 1*Second + 4*Millisecond},
1303 {"100.00100s", true, 100*Second + 1*Millisecond},
1304 // different units
1305 {"10ns", true, 10 * Nanosecond},
1306 {"11us", true, 11 * Microsecond},
1307 {"12µs", true, 12 * Microsecond}, // U+00B5
1308 {"12μs", true, 12 * Microsecond}, // U+03BC
1309 {"13ms", true, 13 * Millisecond},
1310 {"14s", true, 14 * Second},
1311 {"15m", true, 15 * Minute},
1312 {"16h", true, 16 * Hour},
1313 // composite durations
1314 {"3h30m", true, 3*Hour + 30*Minute},
1315 {"10.5s4m", true, 4*Minute + 10*Second + 500*Millisecond},
1316 {"-2m3.4s", true, -(2*Minute + 3*Second + 400*Millisecond)},
1317 {"1h2m3s4ms5us6ns", true, 1*Hour + 2*Minute + 3*Second + 4*Millisecond + 5*Microsecond + 6*Nanosecond},
1318 {"39h9m14.425s", true, 39*Hour + 9*Minute + 14*Second + 425*Millisecond},
1319 // large value
1320 {"52763797000ns", true, 52763797000 * Nanosecond},
1321 // more than 9 digits after decimal point, see http://golang.org/issue/6617
1322 {"0.3333333333333333333h", true, 20 * Minute},
1323
1324 // errors
1325 {"", false, 0},
1326 {"3", false, 0},
1327 {"-", false, 0},
1328 {"s", false, 0},
1329 {".", false, 0},
1330 {"-.", false, 0},
1331 {".s", false, 0},
1332 {"+.s", false, 0},
1333 }
1334
1335 func TestParseDuration(t *testing.T) {
1336 for _, tc := range parseDurationTests {
1337 d, err := ParseDuration(tc.in)
1338 if tc.ok && (err != nil || d != tc.want) {
1339 t.Errorf("ParseDuration(%q) = %v, %v, want %v, nil", tc.in, d, err, tc.want)
1340 } else if !tc.ok && err == nil {
1341 t.Errorf("ParseDuration(%q) = _, nil, want _, non-nil", tc.in)
1342 }
1343 }
1344 }
1345
1346 func TestParseDurationRoundTrip(t *testing.T) {
1347 for i := 0; i < 100; i++ {
1348 // Resolutions finer than milliseconds will result in
1349 // imprecise round-trips.
1350 d0 := Duration(rand.Int31()) * Millisecond
1351 s := d0.String()
1352 d1, err := ParseDuration(s)
1353 if err != nil || d0 != d1 {
1354 t.Errorf("round-trip failed: %d => %q => %d, %v", d0, s, d1, err)
1355 }
1356 }
1357 }
1358
1359 // golang.org/issue/4622
1360 func TestLocationRace(t *testing.T) {
1361 ResetLocalOnceForTest() // reset the Once to trigger the race
1362
1363 c := make(chan string, 1)
1364 go func() {
1365 c <- Now().String()
1366 }()
1367 Now().String()
1368 <-c
1369 Sleep(100 * Millisecond)
1370
1371 // Back to Los Angeles for subsequent tests:
1372 ForceUSPacificForTesting()
1373 }
1374
1375 var (
1376 t Time
1377 u int64
1378 )
1379
1380 var mallocTest = []struct {
1381 count int
1382 desc string
1383 fn func()
1384 }{
1385 {0, `time.Now()`, func() { t = Now() }},
1386 {0, `time.Now().UnixNano()`, func() { u = Now().UnixNano() }},
1387 }
1388
1389 func TestCountMallocs(t *testing.T) {
1390 if testing.Short() {
1391 t.Skip("skipping malloc count in short mode")
1392 }
1393 if runtime.GOMAXPROCS(0) > 1 {
1394 t.Skip("skipping; GOMAXPROCS>1")
1395 }
1396 for _, mt := range mallocTest {
1397 allocs := int(testing.AllocsPerRun(100, mt.fn))
1398 if allocs > mt.count {
1399 t.Errorf("%s: %d allocs, want %d", mt.desc, allocs, mt.count)
1400 }
1401 }
1402 }
1403
1404 func TestLoadFixed(t *testing.T) {
1405 // Issue 4064: handle locations without any zone transitions.
1406 loc, err := LoadLocation("Etc/GMT+1")
1407 if err != nil {
1408 t.Fatal(err)
1409 }
1410
1411 // The tzdata name Etc/GMT+1 uses "east is negative",
1412 // but Go and most other systems use "east is positive".
1413 // So GMT+1 corresponds to -3600 in the Go zone, not +3600.
1414 name, offset := Now().In(loc).Zone()
1415 if name != "GMT+1" || offset != -1*60*60 {
1416 t.Errorf("Now().In(loc).Zone() = %q, %d, want %q, %d", name, offset, "GMT+1", -1*60*60)
1417 }
1418 }
1419
1420 const (
1421 minDuration Duration = -1 << 63
1422 maxDuration Duration = 1<<63 - 1
1423 )
1424
1425 var subTests = []struct {
1426 t Time
1427 u Time
1428 d Duration
1429 }{
1430 {Time{}, Time{}, Duration(0)},
1431 {Date(2009, 11, 23, 0, 0, 0, 1, UTC), Date(2009, 11, 23, 0, 0, 0, 0, UTC), Duration(1)},
1432 {Date(2009, 11, 23, 0, 0, 0, 0, UTC), Date(2009, 11, 24, 0, 0, 0, 0, UTC), -24 * Hour},
1433 {Date(2009, 11, 24, 0, 0, 0, 0, UTC), Date(2009, 11, 23, 0, 0, 0, 0, UTC), 24 * Hour},
1434 {Date(-2009, 11, 24, 0, 0, 0, 0, UTC), Date(-2009, 11, 23, 0, 0, 0, 0, UTC), 24 * Hour},
1435 {Time{}, Date(2109, 11, 23, 0, 0, 0, 0, UTC), Duration(minDuration)},
1436 {Date(2109, 11, 23, 0, 0, 0, 0, UTC), Time{}, Duration(maxDuration)},
1437 {Time{}, Date(-2109, 11, 23, 0, 0, 0, 0, UTC), Duration(maxDuration)},
1438 {Date(-2109, 11, 23, 0, 0, 0, 0, UTC), Time{}, Duration(minDuration)},
1439 {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},
1440 {Date(2300, 1, 1, 0, 0, 0, 0, UTC), Date(2000, 1, 1, 0, 0, 0, 0, UTC), Duration(maxDuration)},
1441 {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},
1442 {Date(2000, 1, 1, 0, 0, 0, 0, UTC), Date(2300, 1, 1, 0, 0, 0, 0, UTC), Duration(minDuration)},
1443 }
1444
1445 func TestSub(t *testing.T) {
1446 for i, st := range subTests {
1447 got := st.t.Sub(st.u)
1448 if got != st.d {
1449 t.Errorf("#%d: Sub(%v, %v): got %v; want %v", i, st.t, st.u, got, st.d)
1450 }
1451 }
1452 }
1453
1454 func BenchmarkNow(b *testing.B) {
1455 for i := 0; i < b.N; i++ {
1456 t = Now()
1457 }
1458 }
1459
1460 func BenchmarkNowUnixNano(b *testing.B) {
1461 for i := 0; i < b.N; i++ {
1462 u = Now().UnixNano()
1463 }
1464 }
1465
1466 func BenchmarkFormat(b *testing.B) {
1467 t := Unix(1265346057, 0)
1468 for i := 0; i < b.N; i++ {
1469 t.Format("Mon Jan 2 15:04:05 2006")
1470 }
1471 }
1472
1473 func BenchmarkFormatNow(b *testing.B) {
1474 // Like BenchmarkFormat, but easier, because the time zone
1475 // lookup cache is optimized for the present.
1476 t := Now()
1477 for i := 0; i < b.N; i++ {
1478 t.Format("Mon Jan 2 15:04:05 2006")
1479 }
1480 }
1481
1482 func BenchmarkParse(b *testing.B) {
1483 for i := 0; i < b.N; i++ {
1484 Parse(ANSIC, "Mon Jan 2 15:04:05 2006")
1485 }
1486 }
1487
1488 func BenchmarkHour(b *testing.B) {
1489 t := Now()
1490 for i := 0; i < b.N; i++ {
1491 _ = t.Hour()
1492 }
1493 }
1494
1495 func BenchmarkSecond(b *testing.B) {
1496 t := Now()
1497 for i := 0; i < b.N; i++ {
1498 _ = t.Second()
1499 }
1500 }
1501
1502 func BenchmarkYear(b *testing.B) {
1503 t := Now()
1504 for i := 0; i < b.N; i++ {
1505 _ = t.Year()
1506 }
1507 }
1508
1509 func BenchmarkDay(b *testing.B) {
1510 t := Now()
1511 for i := 0; i < b.N; i++ {
1512 _ = t.Day()
1513 }
1514 }
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