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// Copyright 2014 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 (
"errors"
"fmt"
"os"
"reflect"
"testing"
"time"
)
func init() {
if time.ZoneinfoForTesting() != nil {
panic(fmt.Errorf("zoneinfo initialized before first LoadLocation"))
}
}
func TestEnvVarUsage(t *testing.T) {
time.ResetZoneinfoForTesting()
const testZoneinfo = "foo.zip"
const env = "ZONEINFO"
t.Setenv(env, testZoneinfo)
// Result isn't important, we're testing the side effect of this command
time.LoadLocation("Asia/Jerusalem")
defer time.ResetZoneinfoForTesting()
if zoneinfo := time.ZoneinfoForTesting(); testZoneinfo != *zoneinfo {
t.Errorf("zoneinfo does not match env variable: got %q want %q", *zoneinfo, testZoneinfo)
}
}
func TestBadLocationErrMsg(t *testing.T) {
time.ResetZoneinfoForTesting()
loc := "Asia/SomethingNotExist"
want := errors.New("unknown time zone " + loc)
_, err := time.LoadLocation(loc)
if err.Error() != want.Error() {
t.Errorf("LoadLocation(%q) error = %v; want %v", loc, err, want)
}
}
func TestLoadLocationValidatesNames(t *testing.T) {
time.ResetZoneinfoForTesting()
const env = "ZONEINFO"
t.Setenv(env, "")
bad := []string{
"/usr/foo/Foo",
"\\UNC\foo",
"..",
"a..",
}
for _, v := range bad {
_, err := time.LoadLocation(v)
if err != time.ErrLocation {
t.Errorf("LoadLocation(%q) error = %v; want ErrLocation", v, err)
}
}
}
func TestVersion3(t *testing.T) {
t.Skip("gccgo does not use the zip file")
time.ForceZipFileForTesting(true)
defer time.ForceZipFileForTesting(false)
_, err := time.LoadLocation("Asia/Jerusalem")
if err != nil {
t.Fatal(err)
}
}
// Test that we get the correct results for times before the first
// transition time. To do this we explicitly check early dates in a
// couple of specific timezones.
func TestFirstZone(t *testing.T) {
t.Skip("gccgo does not use the zip file")
time.ForceZipFileForTesting(true)
defer time.ForceZipFileForTesting(false)
const format = "Mon, 02 Jan 2006 15:04:05 -0700 (MST)"
var tests = []struct {
zone string
unix int64
want1 string
want2 string
}{
{
"PST8PDT",
-1633269601,
"Sun, 31 Mar 1918 01:59:59 -0800 (PST)",
"Sun, 31 Mar 1918 03:00:00 -0700 (PDT)",
},
{
"Pacific/Fakaofo",
1325242799,
"Thu, 29 Dec 2011 23:59:59 -1100 (-11)",
"Sat, 31 Dec 2011 00:00:00 +1300 (+13)",
},
}
for _, test := range tests {
z, err := time.LoadLocation(test.zone)
if err != nil {
t.Fatal(err)
}
s := time.Unix(test.unix, 0).In(z).Format(format)
if s != test.want1 {
t.Errorf("for %s %d got %q want %q", test.zone, test.unix, s, test.want1)
}
s = time.Unix(test.unix+1, 0).In(z).Format(format)
if s != test.want2 {
t.Errorf("for %s %d got %q want %q", test.zone, test.unix, s, test.want2)
}
}
}
func TestLocationNames(t *testing.T) {
if time.Local.String() != "Local" {
t.Errorf(`invalid Local location name: got %q want "Local"`, time.Local)
}
if time.UTC.String() != "UTC" {
t.Errorf(`invalid UTC location name: got %q want "UTC"`, time.UTC)
}
}
func TestLoadLocationFromTZData(t *testing.T) {
t.Skip("gccgo does not use the zip file")
time.ForceZipFileForTesting(true)
defer time.ForceZipFileForTesting(false)
const locationName = "Asia/Jerusalem"
reference, err := time.LoadLocation(locationName)
if err != nil {
t.Fatal(err)
}
tzinfo, err := time.LoadTzinfo(locationName, time.OrigZoneSources[len(time.OrigZoneSources)-1])
if err != nil {
t.Fatal(err)
}
sample, err := time.LoadLocationFromTZData(locationName, tzinfo)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(reference, sample) {
t.Errorf("return values of LoadLocationFromTZData and LoadLocation don't match")
}
}
// Issue 30099.
func TestEarlyLocation(t *testing.T) {
t.Skip("gccgo does not use the zip file")
time.ForceZipFileForTesting(true)
defer time.ForceZipFileForTesting(false)
const locName = "America/New_York"
loc, err := time.LoadLocation(locName)
if err != nil {
t.Fatal(err)
}
d := time.Date(1900, time.January, 1, 0, 0, 0, 0, loc)
tzName, tzOffset := d.Zone()
if want := "EST"; tzName != want {
t.Errorf("Zone name == %s, want %s", tzName, want)
}
if want := -18000; tzOffset != want {
t.Errorf("Zone offset == %d, want %d", tzOffset, want)
}
}
func TestMalformedTZData(t *testing.T) {
// The goal here is just that malformed tzdata results in an error, not a panic.
issue29437 := "TZif\x00000000000000000\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0000"
_, err := time.LoadLocationFromTZData("abc", []byte(issue29437))
if err == nil {
t.Error("expected error, got none")
}
}
var slimTests = []struct {
zoneName string
fileName string
date func(*time.Location) time.Time
wantName string
wantOffset int
}{
{
// 2020b slim tzdata for Europe/Berlin.
zoneName: "Europe/Berlin",
fileName: "2020b_Europe_Berlin",
date: func(loc *time.Location) time.Time { return time.Date(2020, time.October, 29, 15, 30, 0, 0, loc) },
wantName: "CET",
wantOffset: 3600,
},
{
// 2021a slim tzdata for America/Nuuk.
zoneName: "America/Nuuk",
fileName: "2021a_America_Nuuk",
date: func(loc *time.Location) time.Time { return time.Date(2020, time.October, 29, 15, 30, 0, 0, loc) },
wantName: "-03",
wantOffset: -10800,
},
{
// 2021a slim tzdata for Asia/Gaza.
zoneName: "Asia/Gaza",
fileName: "2021a_Asia_Gaza",
date: func(loc *time.Location) time.Time { return time.Date(2020, time.October, 29, 15, 30, 0, 0, loc) },
wantName: "EET",
wantOffset: 7200,
},
{
// 2021a slim tzdata for Europe/Dublin.
zoneName: "Europe/Dublin",
fileName: "2021a_Europe_Dublin",
date: func(loc *time.Location) time.Time { return time.Date(2021, time.April, 2, 11, 12, 13, 0, loc) },
wantName: "IST",
wantOffset: 3600,
},
}
func TestLoadLocationFromTZDataSlim(t *testing.T) {
for _, test := range slimTests {
tzData, err := os.ReadFile("testdata/" + test.fileName)
if err != nil {
t.Error(err)
continue
}
reference, err := time.LoadLocationFromTZData(test.zoneName, tzData)
if err != nil {
t.Error(err)
continue
}
d := test.date(reference)
tzName, tzOffset := d.Zone()
if tzName != test.wantName {
t.Errorf("Zone name == %s, want %s", tzName, test.wantName)
}
if tzOffset != test.wantOffset {
t.Errorf("Zone offset == %d, want %d", tzOffset, test.wantOffset)
}
}
}
func TestTzset(t *testing.T) {
for _, test := range []struct {
inStr string
inEnd int64
inSec int64
name string
off int
start int64
end int64
isDST bool
ok bool
}{
{"", 0, 0, "", 0, 0, 0, false, false},
{"PST8PDT,M3.2.0,M11.1.0", 0, 2159200800, "PDT", -7 * 60 * 60, 2152173600, 2172733200, true, true},
{"PST8PDT,M3.2.0,M11.1.0", 0, 2152173599, "PST", -8 * 60 * 60, 2145916800, 2152173600, false, true},
{"PST8PDT,M3.2.0,M11.1.0", 0, 2152173600, "PDT", -7 * 60 * 60, 2152173600, 2172733200, true, true},
{"PST8PDT,M3.2.0,M11.1.0", 0, 2152173601, "PDT", -7 * 60 * 60, 2152173600, 2172733200, true, true},
{"PST8PDT,M3.2.0,M11.1.0", 0, 2172733199, "PDT", -7 * 60 * 60, 2152173600, 2172733200, true, true},
{"PST8PDT,M3.2.0,M11.1.0", 0, 2172733200, "PST", -8 * 60 * 60, 2172733200, 2177452800, false, true},
{"PST8PDT,M3.2.0,M11.1.0", 0, 2172733201, "PST", -8 * 60 * 60, 2172733200, 2177452800, false, true},
} {
name, off, start, end, isDST, ok := time.Tzset(test.inStr, test.inEnd, test.inSec)
if name != test.name || off != test.off || start != test.start || end != test.end || isDST != test.isDST || ok != test.ok {
t.Errorf("tzset(%q, %d, %d) = %q, %d, %d, %d, %t, %t, want %q, %d, %d, %d, %t, %t", test.inStr, test.inEnd, test.inSec, name, off, start, end, isDST, ok, test.name, test.off, test.start, test.end, test.isDST, test.ok)
}
}
}
func TestTzsetName(t *testing.T) {
for _, test := range []struct {
in string
name string
out string
ok bool
}{
{"", "", "", false},
{"X", "", "", false},
{"PST", "PST", "", true},
{"PST8PDT", "PST", "8PDT", true},
{"PST-08", "PST", "-08", true},
{"<A+B>+08", "A+B", "+08", true},
} {
name, out, ok := time.TzsetName(test.in)
if name != test.name || out != test.out || ok != test.ok {
t.Errorf("tzsetName(%q) = %q, %q, %t, want %q, %q, %t", test.in, name, out, ok, test.name, test.out, test.ok)
}
}
}
func TestTzsetOffset(t *testing.T) {
for _, test := range []struct {
in string
off int
out string
ok bool
}{
{"", 0, "", false},
{"X", 0, "", false},
{"+", 0, "", false},
{"+08", 8 * 60 * 60, "", true},
{"-01:02:03", -1*60*60 - 2*60 - 3, "", true},
{"01", 1 * 60 * 60, "", true},
{"100", 100 * 60 * 60, "", true},
{"1000", 0, "", false},
{"8PDT", 8 * 60 * 60, "PDT", true},
} {
off, out, ok := time.TzsetOffset(test.in)
if off != test.off || out != test.out || ok != test.ok {
t.Errorf("tzsetName(%q) = %d, %q, %t, want %d, %q, %t", test.in, off, out, ok, test.off, test.out, test.ok)
}
}
}
func TestTzsetRule(t *testing.T) {
for _, test := range []struct {
in string
r time.Rule
out string
ok bool
}{
{"", time.Rule{}, "", false},
{"X", time.Rule{}, "", false},
{"J10", time.Rule{Kind: time.RuleJulian, Day: 10, Time: 2 * 60 * 60}, "", true},
{"20", time.Rule{Kind: time.RuleDOY, Day: 20, Time: 2 * 60 * 60}, "", true},
{"M1.2.3", time.Rule{Kind: time.RuleMonthWeekDay, Mon: 1, Week: 2, Day: 3, Time: 2 * 60 * 60}, "", true},
{"30/03:00:00", time.Rule{Kind: time.RuleDOY, Day: 30, Time: 3 * 60 * 60}, "", true},
{"M4.5.6/03:00:00", time.Rule{Kind: time.RuleMonthWeekDay, Mon: 4, Week: 5, Day: 6, Time: 3 * 60 * 60}, "", true},
{"M4.5.7/03:00:00", time.Rule{}, "", false},
{"M4.5.6/-04", time.Rule{Kind: time.RuleMonthWeekDay, Mon: 4, Week: 5, Day: 6, Time: -4 * 60 * 60}, "", true},
} {
r, out, ok := time.TzsetRule(test.in)
if r != test.r || out != test.out || ok != test.ok {
t.Errorf("tzsetName(%q) = %#v, %q, %t, want %#v, %q, %t", test.in, r, out, ok, test.r, test.out, test.ok)
}
}
}