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      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 	"fmt"
      9 	"strconv"
     10 	"strings"
     11 	"testing"
     12 	"testing/quick"
     13 	. "time"
     14 )
     15 
     16 type TimeFormatTest struct {
     17 	time           Time
     18 	formattedValue string
     19 }
     20 
     21 var rfc3339Formats = []TimeFormatTest{
     22 	{Date(2008, 9, 17, 20, 4, 26, 0, UTC), "2008-09-17T20:04:26Z"},
     23 	{Date(1994, 9, 17, 20, 4, 26, 0, FixedZone("EST", -18000)), "1994-09-17T20:04:26-05:00"},
     24 	{Date(2000, 12, 26, 1, 15, 6, 0, FixedZone("OTO", 15600)), "2000-12-26T01:15:06+04:20"},
     25 }
     26 
     27 func TestRFC3339Conversion(t *testing.T) {
     28 	for _, f := range rfc3339Formats {
     29 		if f.time.Format(RFC3339) != f.formattedValue {
     30 			t.Error("RFC3339:")
     31 			t.Errorf("  want=%+v", f.formattedValue)
     32 			t.Errorf("  have=%+v", f.time.Format(RFC3339))
     33 		}
     34 	}
     35 }
     36 
     37 type FormatTest struct {
     38 	name   string
     39 	format string
     40 	result string
     41 }
     42 
     43 var formatTests = []FormatTest{
     44 	{"ANSIC", ANSIC, "Wed Feb  4 21:00:57 2009"},
     45 	{"UnixDate", UnixDate, "Wed Feb  4 21:00:57 PST 2009"},
     46 	{"RubyDate", RubyDate, "Wed Feb 04 21:00:57 -0800 2009"},
     47 	{"RFC822", RFC822, "04 Feb 09 21:00 PST"},
     48 	{"RFC850", RFC850, "Wednesday, 04-Feb-09 21:00:57 PST"},
     49 	{"RFC1123", RFC1123, "Wed, 04 Feb 2009 21:00:57 PST"},
     50 	{"RFC1123Z", RFC1123Z, "Wed, 04 Feb 2009 21:00:57 -0800"},
     51 	{"RFC3339", RFC3339, "2009-02-04T21:00:57-08:00"},
     52 	{"RFC3339Nano", RFC3339Nano, "2009-02-04T21:00:57.0123456-08:00"},
     53 	{"Kitchen", Kitchen, "9:00PM"},
     54 	{"am/pm", "3pm", "9pm"},
     55 	{"AM/PM", "3PM", "9PM"},
     56 	{"two-digit year", "06 01 02", "09 02 04"},
     57 	// Three-letter months and days must not be followed by lower-case letter.
     58 	{"Janet", "Hi Janet, the Month is January", "Hi Janet, the Month is February"},
     59 	// Time stamps, Fractional seconds.
     60 	{"Stamp", Stamp, "Feb  4 21:00:57"},
     61 	{"StampMilli", StampMilli, "Feb  4 21:00:57.012"},
     62 	{"StampMicro", StampMicro, "Feb  4 21:00:57.012345"},
     63 	{"StampNano", StampNano, "Feb  4 21:00:57.012345600"},
     64 }
     65 
     66 func TestFormat(t *testing.T) {
     67 	// The numeric time represents Thu Feb  4 21:00:57.012345600 PST 2010
     68 	time := Unix(0, 1233810057012345600)
     69 	for _, test := range formatTests {
     70 		result := time.Format(test.format)
     71 		if result != test.result {
     72 			t.Errorf("%s expected %q got %q", test.name, test.result, result)
     73 		}
     74 	}
     75 }
     76 
     77 func TestFormatShortYear(t *testing.T) {
     78 	years := []int{
     79 		-100001, -100000, -99999,
     80 		-10001, -10000, -9999,
     81 		-1001, -1000, -999,
     82 		-101, -100, -99,
     83 		-11, -10, -9,
     84 		-1, 0, 1,
     85 		9, 10, 11,
     86 		99, 100, 101,
     87 		999, 1000, 1001,
     88 		9999, 10000, 10001,
     89 		99999, 100000, 100001,
     90 	}
     91 
     92 	for _, y := range years {
     93 		time := Date(y, January, 1, 0, 0, 0, 0, UTC)
     94 		result := time.Format("2006.01.02")
     95 		var want string
     96 		if y < 0 {
     97 			// The 4 in %04d counts the - sign, so print -y instead
     98 			// and introduce our own - sign.
     99 			want = fmt.Sprintf("-%04d.%02d.%02d", -y, 1, 1)
    100 		} else {
    101 			want = fmt.Sprintf("%04d.%02d.%02d", y, 1, 1)
    102 		}
    103 		if result != want {
    104 			t.Errorf("(jan 1 %d).Format(\"2006.01.02\") = %q, want %q", y, result, want)
    105 		}
    106 	}
    107 }
    108 
    109 type ParseTest struct {
    110 	name       string
    111 	format     string
    112 	value      string
    113 	hasTZ      bool // contains a time zone
    114 	hasWD      bool // contains a weekday
    115 	yearSign   int  // sign of year, -1 indicates the year is not present in the format
    116 	fracDigits int  // number of digits of fractional second
    117 }
    118 
    119 var parseTests = []ParseTest{
    120 	{"ANSIC", ANSIC, "Thu Feb  4 21:00:57 2010", false, true, 1, 0},
    121 	{"UnixDate", UnixDate, "Thu Feb  4 21:00:57 PST 2010", true, true, 1, 0},
    122 	{"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0800 2010", true, true, 1, 0},
    123 	{"RFC850", RFC850, "Thursday, 04-Feb-10 21:00:57 PST", true, true, 1, 0},
    124 	{"RFC1123", RFC1123, "Thu, 04 Feb 2010 21:00:57 PST", true, true, 1, 0},
    125 	{"RFC1123", RFC1123, "Thu, 04 Feb 2010 22:00:57 PDT", true, true, 1, 0},
    126 	{"RFC1123Z", RFC1123Z, "Thu, 04 Feb 2010 21:00:57 -0800", true, true, 1, 0},
    127 	{"RFC3339", RFC3339, "2010-02-04T21:00:57-08:00", true, false, 1, 0},
    128 	{"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},
    129 	// Optional fractional seconds.
    130 	{"ANSIC", ANSIC, "Thu Feb  4 21:00:57.0 2010", false, true, 1, 1},
    131 	{"UnixDate", UnixDate, "Thu Feb  4 21:00:57.01 PST 2010", true, true, 1, 2},
    132 	{"RubyDate", RubyDate, "Thu Feb 04 21:00:57.012 -0800 2010", true, true, 1, 3},
    133 	{"RFC850", RFC850, "Thursday, 04-Feb-10 21:00:57.0123 PST", true, true, 1, 4},
    134 	{"RFC1123", RFC1123, "Thu, 04 Feb 2010 21:00:57.01234 PST", true, true, 1, 5},
    135 	{"RFC1123Z", RFC1123Z, "Thu, 04 Feb 2010 21:00:57.01234 -0800", true, true, 1, 5},
    136 	{"RFC3339", RFC3339, "2010-02-04T21:00:57.012345678-08:00", true, false, 1, 9},
    137 	{"custom: \"2006-01-02 15:04:05\"", "2006-01-02 15:04:05", "2010-02-04 21:00:57.0", false, false, 1, 0},
    138 	// Amount of white space should not matter.
    139 	{"ANSIC", ANSIC, "Thu Feb 4 21:00:57 2010", false, true, 1, 0},
    140 	{"ANSIC", ANSIC, "Thu      Feb     4     21:00:57     2010", false, true, 1, 0},
    141 	// Case should not matter
    142 	{"ANSIC", ANSIC, "THU FEB 4 21:00:57 2010", false, true, 1, 0},
    143 	{"ANSIC", ANSIC, "thu feb 4 21:00:57 2010", false, true, 1, 0},
    144 	// Fractional seconds.
    145 	{"millisecond", "Mon Jan _2 15:04:05.000 2006", "Thu Feb  4 21:00:57.012 2010", false, true, 1, 3},
    146 	{"microsecond", "Mon Jan _2 15:04:05.000000 2006", "Thu Feb  4 21:00:57.012345 2010", false, true, 1, 6},
    147 	{"nanosecond", "Mon Jan _2 15:04:05.000000000 2006", "Thu Feb  4 21:00:57.012345678 2010", false, true, 1, 9},
    148 	// Leading zeros in other places should not be taken as fractional seconds.
    149 	{"zero1", "2006.01.02.15.04.05.0", "2010.02.04.21.00.57.0", false, false, 1, 1},
    150 	{"zero2", "2006.01.02.15.04.05.00", "2010.02.04.21.00.57.01", false, false, 1, 2},
    151 	// Month and day names only match when not followed by a lower-case letter.
    152 	{"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},
    153 
    154 	// GMT with offset.
    155 	{"GMT-8", UnixDate, "Fri Feb  5 05:00:57 GMT-8 2010", true, true, 1, 0},
    156 
    157 	// Accept any number of fractional second digits (including none) for .999...
    158 	// In Go 1, .999... was completely ignored in the format, meaning the first two
    159 	// cases would succeed, but the next four would not. Go 1.1 accepts all six.
    160 	{"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57 -0800 PST", true, false, 1, 0},
    161 	{"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57 -0800 PST", true, false, 1, 0},
    162 	{"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57.0123 -0800 PST", true, false, 1, 4},
    163 	{"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57.0123 -0800 PST", true, false, 1, 4},
    164 	{"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57.012345678 -0800 PST", true, false, 1, 9},
    165 	{"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57.012345678 -0800 PST", true, false, 1, 9},
    166 
    167 	// issue 4502.
    168 	{"", StampNano, "Feb  4 21:00:57.012345678", false, false, -1, 9},
    169 	{"", "Jan _2 15:04:05.999", "Feb  4 21:00:57.012300000", false, false, -1, 4},
    170 	{"", "Jan _2 15:04:05.999", "Feb  4 21:00:57.012345678", false, false, -1, 9},
    171 	{"", "Jan _2 15:04:05.999999999", "Feb  4 21:00:57.0123", false, false, -1, 4},
    172 	{"", "Jan _2 15:04:05.999999999", "Feb  4 21:00:57.012345678", false, false, -1, 9},
    173 }
    174 
    175 func TestParse(t *testing.T) {
    176 	for _, test := range parseTests {
    177 		time, err := Parse(test.format, test.value)
    178 		if err != nil {
    179 			t.Errorf("%s error: %v", test.name, err)
    180 		} else {
    181 			checkTime(time, &test, t)
    182 		}
    183 	}
    184 }
    185 
    186 func TestParseInLocation(t *testing.T) {
    187 	// Check that Parse (and ParseInLocation) understand that
    188 	// Feb 01 AST (Arabia Standard Time) and Feb 01 AST (Atlantic Standard Time)
    189 	// are in different time zones even though both are called AST
    190 
    191 	baghdad, err := LoadLocation("Asia/Baghdad")
    192 	if err != nil {
    193 		t.Fatal(err)
    194 	}
    195 
    196 	t1, err := ParseInLocation("Jan 02 2006 MST", "Feb 01 2013 AST", baghdad)
    197 	if err != nil {
    198 		t.Fatal(err)
    199 	}
    200 	t2 := Date(2013, February, 1, 00, 00, 00, 0, baghdad)
    201 	if t1 != t2 {
    202 		t.Fatalf("ParseInLocation(Feb 01 2013 AST, Baghdad) = %v, want %v", t1, t2)
    203 	}
    204 	_, offset := t1.Zone()
    205 	if offset != 3*60*60 {
    206 		t.Fatalf("ParseInLocation(Feb 01 2013 AST, Baghdad).Zone = _, %d, want _, %d", offset, 3*60*60)
    207 	}
    208 
    209 	blancSablon, err := LoadLocation("America/Blanc-Sablon")
    210 	if err != nil {
    211 		t.Fatal(err)
    212 	}
    213 
    214 	t1, err = ParseInLocation("Jan 02 2006 MST", "Feb 01 2013 AST", blancSablon)
    215 	if err != nil {
    216 		t.Fatal(err)
    217 	}
    218 	t2 = Date(2013, February, 1, 00, 00, 00, 0, blancSablon)
    219 	if t1 != t2 {
    220 		t.Fatalf("ParseInLocation(Feb 01 2013 AST, Blanc-Sablon) = %v, want %v", t1, t2)
    221 	}
    222 	_, offset = t1.Zone()
    223 	if offset != -4*60*60 {
    224 		t.Fatalf("ParseInLocation(Feb 01 2013 AST, Blanc-Sablon).Zone = _, %d, want _, %d", offset, -4*60*60)
    225 	}
    226 }
    227 
    228 func TestLoadLocationZipFile(t *testing.T) {
    229 	ForceZipFileForTesting(true)
    230 	defer ForceZipFileForTesting(false)
    231 
    232 	_, err := LoadLocation("Australia/Sydney")
    233 	if err != nil {
    234 		t.Fatal(err)
    235 	}
    236 }
    237 
    238 var rubyTests = []ParseTest{
    239 	{"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0800 2010", true, true, 1, 0},
    240 	// Ignore the time zone in the test. If it parses, it'll be OK.
    241 	{"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0000 2010", false, true, 1, 0},
    242 	{"RubyDate", RubyDate, "Thu Feb 04 21:00:57 +0000 2010", false, true, 1, 0},
    243 	{"RubyDate", RubyDate, "Thu Feb 04 21:00:57 +1130 2010", false, true, 1, 0},
    244 }
    245 
    246 // Problematic time zone format needs special tests.
    247 func TestRubyParse(t *testing.T) {
    248 	for _, test := range rubyTests {
    249 		time, err := Parse(test.format, test.value)
    250 		if err != nil {
    251 			t.Errorf("%s error: %v", test.name, err)
    252 		} else {
    253 			checkTime(time, &test, t)
    254 		}
    255 	}
    256 }
    257 
    258 func checkTime(time Time, test *ParseTest, t *testing.T) {
    259 	// The time should be Thu Feb  4 21:00:57 PST 2010
    260 	if test.yearSign >= 0 && test.yearSign*time.Year() != 2010 {
    261 		t.Errorf("%s: bad year: %d not %d", test.name, time.Year(), 2010)
    262 	}
    263 	if time.Month() != February {
    264 		t.Errorf("%s: bad month: %s not %s", test.name, time.Month(), February)
    265 	}
    266 	if time.Day() != 4 {
    267 		t.Errorf("%s: bad day: %d not %d", test.name, time.Day(), 4)
    268 	}
    269 	if time.Hour() != 21 {
    270 		t.Errorf("%s: bad hour: %d not %d", test.name, time.Hour(), 21)
    271 	}
    272 	if time.Minute() != 0 {
    273 		t.Errorf("%s: bad minute: %d not %d", test.name, time.Minute(), 0)
    274 	}
    275 	if time.Second() != 57 {
    276 		t.Errorf("%s: bad second: %d not %d", test.name, time.Second(), 57)
    277 	}
    278 	// Nanoseconds must be checked against the precision of the input.
    279 	nanosec, err := strconv.ParseUint("012345678"[:test.fracDigits]+"000000000"[:9-test.fracDigits], 10, 0)
    280 	if err != nil {
    281 		panic(err)
    282 	}
    283 	if time.Nanosecond() != int(nanosec) {
    284 		t.Errorf("%s: bad nanosecond: %d not %d", test.name, time.Nanosecond(), nanosec)
    285 	}
    286 	name, offset := time.Zone()
    287 	if test.hasTZ && offset != -28800 {
    288 		t.Errorf("%s: bad tz offset: %s %d not %d", test.name, name, offset, -28800)
    289 	}
    290 	if test.hasWD && time.Weekday() != Thursday {
    291 		t.Errorf("%s: bad weekday: %s not %s", test.name, time.Weekday(), Thursday)
    292 	}
    293 }
    294 
    295 func TestFormatAndParse(t *testing.T) {
    296 	const fmt = "Mon MST " + RFC3339 // all fields
    297 	f := func(sec int64) bool {
    298 		t1 := Unix(sec, 0)
    299 		if t1.Year() < 1000 || t1.Year() > 9999 {
    300 			// not required to work
    301 			return true
    302 		}
    303 		t2, err := Parse(fmt, t1.Format(fmt))
    304 		if err != nil {
    305 			t.Errorf("error: %s", err)
    306 			return false
    307 		}
    308 		if t1.Unix() != t2.Unix() || t1.Nanosecond() != t2.Nanosecond() {
    309 			t.Errorf("FormatAndParse %d: %q(%d) %q(%d)", sec, t1, t1.Unix(), t2, t2.Unix())
    310 			return false
    311 		}
    312 		return true
    313 	}
    314 	f32 := func(sec int32) bool { return f(int64(sec)) }
    315 	cfg := &quick.Config{MaxCount: 10000}
    316 
    317 	// Try a reasonable date first, then the huge ones.
    318 	if err := quick.Check(f32, cfg); err != nil {
    319 		t.Fatal(err)
    320 	}
    321 	if err := quick.Check(f, cfg); err != nil {
    322 		t.Fatal(err)
    323 	}
    324 }
    325 
    326 type ParseTimeZoneTest struct {
    327 	value  string
    328 	length int
    329 	ok     bool
    330 }
    331 
    332 var parseTimeZoneTests = []ParseTimeZoneTest{
    333 	{"gmt hi there", 0, false},
    334 	{"GMT hi there", 3, true},
    335 	{"GMT+12 hi there", 6, true},
    336 	{"GMT+00 hi there", 3, true}, // 0 or 00 is not a legal offset.
    337 	{"GMT-5 hi there", 5, true},
    338 	{"GMT-51 hi there", 3, true},
    339 	{"ChST hi there", 4, true},
    340 	{"MeST hi there", 4, true},
    341 	{"MSDx", 3, true},
    342 	{"MSDY", 0, false}, // four letters must end in T.
    343 	{"ESAST hi", 5, true},
    344 	{"ESASTT hi", 0, false}, // run of upper-case letters too long.
    345 	{"ESATY hi", 0, false},  // five letters must end in T.
    346 }
    347 
    348 func TestParseTimeZone(t *testing.T) {
    349 	for _, test := range parseTimeZoneTests {
    350 		length, ok := ParseTimeZone(test.value)
    351 		if ok != test.ok {
    352 			t.Errorf("expected %t for %q got %t", test.ok, test.value, ok)
    353 		} else if length != test.length {
    354 			t.Errorf("expected %d for %q got %d", test.length, test.value, length)
    355 		}
    356 	}
    357 }
    358 
    359 type ParseErrorTest struct {
    360 	format string
    361 	value  string
    362 	expect string // must appear within the error
    363 }
    364 
    365 var parseErrorTests = []ParseErrorTest{
    366 	{ANSIC, "Feb  4 21:00:60 2010", "cannot parse"}, // cannot parse Feb as Mon
    367 	{ANSIC, "Thu Feb  4 21:00:57 @2010", "cannot parse"},
    368 	{ANSIC, "Thu Feb  4 21:00:60 2010", "second out of range"},
    369 	{ANSIC, "Thu Feb  4 21:61:57 2010", "minute out of range"},
    370 	{ANSIC, "Thu Feb  4 24:00:60 2010", "hour out of range"},
    371 	{"Mon Jan _2 15:04:05.000 2006", "Thu Feb  4 23:00:59x01 2010", "cannot parse"},
    372 	{"Mon Jan _2 15:04:05.000 2006", "Thu Feb  4 23:00:59.xxx 2010", "cannot parse"},
    373 	{"Mon Jan _2 15:04:05.000 2006", "Thu Feb  4 23:00:59.-123 2010", "fractional second out of range"},
    374 	// issue 4502. StampNano requires exactly 9 digits of precision.
    375 	{StampNano, "Dec  7 11:22:01.000000", `cannot parse ".000000" as ".000000000"`},
    376 	{StampNano, "Dec  7 11:22:01.0000000000", "extra text: 0"},
    377 	// issue 4493. Helpful errors.
    378 	{RFC3339, "2006-01-02T15:04:05Z07:00", `parsing time "2006-01-02T15:04:05Z07:00": extra text: 07:00`},
    379 	{RFC3339, "2006-01-02T15:04_abc", `parsing time "2006-01-02T15:04_abc" as "2006-01-02T15:04:05Z07:00": cannot parse "_abc" as ":"`},
    380 	{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"`},
    381 	{RFC3339, "2006-01-02T15:04:05Z_abc", `parsing time "2006-01-02T15:04:05Z_abc": extra text: _abc`},
    382 }
    383 
    384 func TestParseErrors(t *testing.T) {
    385 	for _, test := range parseErrorTests {
    386 		_, err := Parse(test.format, test.value)
    387 		if err == nil {
    388 			t.Errorf("expected error for %q %q", test.format, test.value)
    389 		} else if strings.Index(err.Error(), test.expect) < 0 {
    390 			t.Errorf("expected error with %q for %q %q; got %s", test.expect, test.format, test.value, err)
    391 		}
    392 	}
    393 }
    394 
    395 func TestNoonIs12PM(t *testing.T) {
    396 	noon := Date(0, January, 1, 12, 0, 0, 0, UTC)
    397 	const expect = "12:00PM"
    398 	got := noon.Format("3:04PM")
    399 	if got != expect {
    400 		t.Errorf("got %q; expect %q", got, expect)
    401 	}
    402 	got = noon.Format("03:04PM")
    403 	if got != expect {
    404 		t.Errorf("got %q; expect %q", got, expect)
    405 	}
    406 }
    407 
    408 func TestMidnightIs12AM(t *testing.T) {
    409 	midnight := Date(0, January, 1, 0, 0, 0, 0, UTC)
    410 	expect := "12:00AM"
    411 	got := midnight.Format("3:04PM")
    412 	if got != expect {
    413 		t.Errorf("got %q; expect %q", got, expect)
    414 	}
    415 	got = midnight.Format("03:04PM")
    416 	if got != expect {
    417 		t.Errorf("got %q; expect %q", got, expect)
    418 	}
    419 }
    420 
    421 func Test12PMIsNoon(t *testing.T) {
    422 	noon, err := Parse("3:04PM", "12:00PM")
    423 	if err != nil {
    424 		t.Fatal("error parsing date:", err)
    425 	}
    426 	if noon.Hour() != 12 {
    427 		t.Errorf("got %d; expect 12", noon.Hour())
    428 	}
    429 	noon, err = Parse("03:04PM", "12:00PM")
    430 	if err != nil {
    431 		t.Fatal("error parsing date:", err)
    432 	}
    433 	if noon.Hour() != 12 {
    434 		t.Errorf("got %d; expect 12", noon.Hour())
    435 	}
    436 }
    437 
    438 func Test12AMIsMidnight(t *testing.T) {
    439 	midnight, err := Parse("3:04PM", "12:00AM")
    440 	if err != nil {
    441 		t.Fatal("error parsing date:", err)
    442 	}
    443 	if midnight.Hour() != 0 {
    444 		t.Errorf("got %d; expect 0", midnight.Hour())
    445 	}
    446 	midnight, err = Parse("03:04PM", "12:00AM")
    447 	if err != nil {
    448 		t.Fatal("error parsing date:", err)
    449 	}
    450 	if midnight.Hour() != 0 {
    451 		t.Errorf("got %d; expect 0", midnight.Hour())
    452 	}
    453 }
    454 
    455 // Check that a time without a Zone still produces a (numeric) time zone
    456 // when formatted with MST as a requested zone.
    457 func TestMissingZone(t *testing.T) {
    458 	time, err := Parse(RubyDate, "Thu Feb 02 16:10:03 -0500 2006")
    459 	if err != nil {
    460 		t.Fatal("error parsing date:", err)
    461 	}
    462 	expect := "Thu Feb  2 16:10:03 -0500 2006" // -0500 not EST
    463 	str := time.Format(UnixDate)               // uses MST as its time zone
    464 	if str != expect {
    465 		t.Errorf("got %s; expect %s", str, expect)
    466 	}
    467 }
    468 
    469 func TestMinutesInTimeZone(t *testing.T) {
    470 	time, err := Parse(RubyDate, "Mon Jan 02 15:04:05 +0123 2006")
    471 	if err != nil {
    472 		t.Fatal("error parsing date:", err)
    473 	}
    474 	expected := (1*60 + 23) * 60
    475 	_, offset := time.Zone()
    476 	if offset != expected {
    477 		t.Errorf("ZoneOffset = %d, want %d", offset, expected)
    478 	}
    479 }
    480 
    481 type SecondsTimeZoneOffsetTest struct {
    482 	format         string
    483 	value          string
    484 	expectedoffset int
    485 }
    486 
    487 var secondsTimeZoneOffsetTests = []SecondsTimeZoneOffsetTest{
    488 	{"2006-01-02T15:04:05-070000", "1871-01-01T05:33:02-003408", -(34*60 + 8)},
    489 	{"2006-01-02T15:04:05-07:00:00", "1871-01-01T05:33:02-00:34:08", -(34*60 + 8)},
    490 	{"2006-01-02T15:04:05-070000", "1871-01-01T05:33:02+003408", 34*60 + 8},
    491 	{"2006-01-02T15:04:05-07:00:00", "1871-01-01T05:33:02+00:34:08", 34*60 + 8},
    492 	{"2006-01-02T15:04:05Z070000", "1871-01-01T05:33:02-003408", -(34*60 + 8)},
    493 	{"2006-01-02T15:04:05Z07:00:00", "1871-01-01T05:33:02+00:34:08", 34*60 + 8},
    494 }
    495 
    496 func TestParseSecondsInTimeZone(t *testing.T) {
    497 	// should accept timezone offsets with seconds like: Zone America/New_York   -4:56:02 -      LMT     1883 Nov 18 12:03:58
    498 	for _, test := range secondsTimeZoneOffsetTests {
    499 		time, err := Parse(test.format, test.value)
    500 		if err != nil {
    501 			t.Fatal("error parsing date:", err)
    502 		}
    503 		_, offset := time.Zone()
    504 		if offset != test.expectedoffset {
    505 			t.Errorf("ZoneOffset = %d, want %d", offset, test.expectedoffset)
    506 		}
    507 	}
    508 }
    509 
    510 func TestFormatSecondsInTimeZone(t *testing.T) {
    511 	for _, test := range secondsTimeZoneOffsetTests {
    512 		d := Date(1871, 1, 1, 5, 33, 2, 0, FixedZone("LMT", test.expectedoffset))
    513 		timestr := d.Format(test.format)
    514 		if timestr != test.value {
    515 			t.Errorf("Format = %s, want %s", timestr, test.value)
    516 		}
    517 	}
    518 }
    519