Source file
src/time/zoneinfo_test.go
1
2
3
4
5 package time_test
6
7 import (
8 "errors"
9 "fmt"
10 "internal/testenv"
11 "os"
12 "reflect"
13 "testing"
14 "time"
15 )
16
17 func init() {
18 if time.ZoneinfoForTesting() != nil {
19 panic(fmt.Errorf("zoneinfo initialized before first LoadLocation"))
20 }
21 }
22
23 func TestEnvVarUsage(t *testing.T) {
24 time.ResetZoneinfoForTesting()
25
26 const testZoneinfo = "foo.zip"
27 const env = "ZONEINFO"
28
29 t.Setenv(env, testZoneinfo)
30
31
32 time.LoadLocation("Asia/Jerusalem")
33 defer time.ResetZoneinfoForTesting()
34
35 if zoneinfo := time.ZoneinfoForTesting(); testZoneinfo != *zoneinfo {
36 t.Errorf("zoneinfo does not match env variable: got %q want %q", *zoneinfo, testZoneinfo)
37 }
38 }
39
40 func TestBadLocationErrMsg(t *testing.T) {
41 time.ResetZoneinfoForTesting()
42 loc := "Asia/SomethingNotExist"
43 want := errors.New("unknown time zone " + loc)
44 _, err := time.LoadLocation(loc)
45 if err.Error() != want.Error() {
46 t.Errorf("LoadLocation(%q) error = %v; want %v", loc, err, want)
47 }
48 }
49
50 func TestLoadLocationValidatesNames(t *testing.T) {
51 time.ResetZoneinfoForTesting()
52 const env = "ZONEINFO"
53 t.Setenv(env, "")
54
55 bad := []string{
56 "/usr/foo/Foo",
57 "\\UNC\foo",
58 "..",
59 "a..",
60 }
61 for _, v := range bad {
62 _, err := time.LoadLocation(v)
63 if err != time.ErrLocation {
64 t.Errorf("LoadLocation(%q) error = %v; want ErrLocation", v, err)
65 }
66 }
67 }
68
69 func TestVersion3(t *testing.T) {
70 undo := time.DisablePlatformSources()
71 defer undo()
72 _, err := time.LoadLocation("Asia/Jerusalem")
73 if err != nil {
74 t.Fatal(err)
75 }
76 }
77
78
79
80
81 func TestFirstZone(t *testing.T) {
82 undo := time.DisablePlatformSources()
83 defer undo()
84
85 const format = "Mon, 02 Jan 2006 15:04:05 -0700 (MST)"
86 var tests = []struct {
87 zone string
88 unix int64
89 want1 string
90 want2 string
91 }{
92 {
93 "PST8PDT",
94 -1633269601,
95 "Sun, 31 Mar 1918 01:59:59 -0800 (PST)",
96 "Sun, 31 Mar 1918 03:00:00 -0700 (PDT)",
97 },
98 {
99 "Pacific/Fakaofo",
100 1325242799,
101 "Thu, 29 Dec 2011 23:59:59 -1100 (-11)",
102 "Sat, 31 Dec 2011 00:00:00 +1300 (+13)",
103 },
104 }
105
106 for _, test := range tests {
107 z, err := time.LoadLocation(test.zone)
108 if err != nil {
109 t.Fatal(err)
110 }
111 s := time.Unix(test.unix, 0).In(z).Format(format)
112 if s != test.want1 {
113 t.Errorf("for %s %d got %q want %q", test.zone, test.unix, s, test.want1)
114 }
115 s = time.Unix(test.unix+1, 0).In(z).Format(format)
116 if s != test.want2 {
117 t.Errorf("for %s %d got %q want %q", test.zone, test.unix, s, test.want2)
118 }
119 }
120 }
121
122 func TestLocationNames(t *testing.T) {
123 if time.Local.String() != "Local" {
124 t.Errorf(`invalid Local location name: got %q want "Local"`, time.Local)
125 }
126 if time.UTC.String() != "UTC" {
127 t.Errorf(`invalid UTC location name: got %q want "UTC"`, time.UTC)
128 }
129 }
130
131 func TestLoadLocationFromTZData(t *testing.T) {
132 undo := time.DisablePlatformSources()
133 defer undo()
134
135 const locationName = "Asia/Jerusalem"
136 reference, err := time.LoadLocation(locationName)
137 if err != nil {
138 t.Fatal(err)
139 }
140
141 gorootSource, ok := time.GorootZoneSource(testenv.GOROOT(t))
142 if !ok {
143 t.Fatal("Failed to locate tzinfo source in GOROOT.")
144 }
145 tzinfo, err := time.LoadTzinfo(locationName, gorootSource)
146 if err != nil {
147 t.Fatal(err)
148 }
149 sample, err := time.LoadLocationFromTZData(locationName, tzinfo)
150 if err != nil {
151 t.Fatal(err)
152 }
153
154 if !reflect.DeepEqual(reference, sample) {
155 t.Errorf("return values of LoadLocationFromTZData and LoadLocation don't match")
156 }
157 }
158
159
160 func TestEarlyLocation(t *testing.T) {
161 undo := time.DisablePlatformSources()
162 defer undo()
163
164 const locName = "America/New_York"
165 loc, err := time.LoadLocation(locName)
166 if err != nil {
167 t.Fatal(err)
168 }
169
170 d := time.Date(1900, time.January, 1, 0, 0, 0, 0, loc)
171 tzName, tzOffset := d.Zone()
172 if want := "EST"; tzName != want {
173 t.Errorf("Zone name == %s, want %s", tzName, want)
174 }
175 if want := -18000; tzOffset != want {
176 t.Errorf("Zone offset == %d, want %d", tzOffset, want)
177 }
178 }
179
180 func TestMalformedTZData(t *testing.T) {
181
182 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"
183 _, err := time.LoadLocationFromTZData("abc", []byte(issue29437))
184 if err == nil {
185 t.Error("expected error, got none")
186 }
187 }
188
189 var slimTests = []struct {
190 zoneName string
191 fileName string
192 date func(*time.Location) time.Time
193 wantName string
194 wantOffset int
195 }{
196 {
197
198 zoneName: "Europe/Berlin",
199 fileName: "2020b_Europe_Berlin",
200 date: func(loc *time.Location) time.Time { return time.Date(2020, time.October, 29, 15, 30, 0, 0, loc) },
201 wantName: "CET",
202 wantOffset: 3600,
203 },
204 {
205
206 zoneName: "America/Nuuk",
207 fileName: "2021a_America_Nuuk",
208 date: func(loc *time.Location) time.Time { return time.Date(2020, time.October, 29, 15, 30, 0, 0, loc) },
209 wantName: "-03",
210 wantOffset: -10800,
211 },
212 {
213
214 zoneName: "Asia/Gaza",
215 fileName: "2021a_Asia_Gaza",
216 date: func(loc *time.Location) time.Time { return time.Date(2020, time.October, 29, 15, 30, 0, 0, loc) },
217 wantName: "EET",
218 wantOffset: 7200,
219 },
220 {
221
222 zoneName: "Europe/Dublin",
223 fileName: "2021a_Europe_Dublin",
224 date: func(loc *time.Location) time.Time { return time.Date(2021, time.April, 2, 11, 12, 13, 0, loc) },
225 wantName: "IST",
226 wantOffset: 3600,
227 },
228 }
229
230 func TestLoadLocationFromTZDataSlim(t *testing.T) {
231 for _, test := range slimTests {
232 tzData, err := os.ReadFile("testdata/" + test.fileName)
233 if err != nil {
234 t.Error(err)
235 continue
236 }
237 reference, err := time.LoadLocationFromTZData(test.zoneName, tzData)
238 if err != nil {
239 t.Error(err)
240 continue
241 }
242
243 d := test.date(reference)
244 tzName, tzOffset := d.Zone()
245 if tzName != test.wantName {
246 t.Errorf("Zone name == %s, want %s", tzName, test.wantName)
247 }
248 if tzOffset != test.wantOffset {
249 t.Errorf("Zone offset == %d, want %d", tzOffset, test.wantOffset)
250 }
251 }
252 }
253
254 func TestTzset(t *testing.T) {
255 for _, test := range []struct {
256 inStr string
257 inEnd int64
258 inSec int64
259 name string
260 off int
261 start int64
262 end int64
263 isDST bool
264 ok bool
265 }{
266 {"", 0, 0, "", 0, 0, 0, false, false},
267 {"PST8PDT,M3.2.0,M11.1.0", 0, 2159200800, "PDT", -7 * 60 * 60, 2152173600, 2172733200, true, true},
268 {"PST8PDT,M3.2.0,M11.1.0", 0, 2152173599, "PST", -8 * 60 * 60, 2145916800, 2152173600, false, true},
269 {"PST8PDT,M3.2.0,M11.1.0", 0, 2152173600, "PDT", -7 * 60 * 60, 2152173600, 2172733200, true, true},
270 {"PST8PDT,M3.2.0,M11.1.0", 0, 2152173601, "PDT", -7 * 60 * 60, 2152173600, 2172733200, true, true},
271 {"PST8PDT,M3.2.0,M11.1.0", 0, 2172733199, "PDT", -7 * 60 * 60, 2152173600, 2172733200, true, true},
272 {"PST8PDT,M3.2.0,M11.1.0", 0, 2172733200, "PST", -8 * 60 * 60, 2172733200, 2177452800, false, true},
273 {"PST8PDT,M3.2.0,M11.1.0", 0, 2172733201, "PST", -8 * 60 * 60, 2172733200, 2177452800, false, true},
274 {"KST-9", 592333200, 1677246697, "KST", 9 * 60 * 60, 592333200, 1<<63 - 1, false, true},
275 } {
276 name, off, start, end, isDST, ok := time.Tzset(test.inStr, test.inEnd, test.inSec)
277 if name != test.name || off != test.off || start != test.start || end != test.end || isDST != test.isDST || ok != test.ok {
278 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)
279 }
280 }
281 }
282
283 func TestTzsetName(t *testing.T) {
284 for _, test := range []struct {
285 in string
286 name string
287 out string
288 ok bool
289 }{
290 {"", "", "", false},
291 {"X", "", "", false},
292 {"PST", "PST", "", true},
293 {"PST8PDT", "PST", "8PDT", true},
294 {"PST-08", "PST", "-08", true},
295 {"<A+B>+08", "A+B", "+08", true},
296 } {
297 name, out, ok := time.TzsetName(test.in)
298 if name != test.name || out != test.out || ok != test.ok {
299 t.Errorf("tzsetName(%q) = %q, %q, %t, want %q, %q, %t", test.in, name, out, ok, test.name, test.out, test.ok)
300 }
301 }
302 }
303
304 func TestTzsetOffset(t *testing.T) {
305 for _, test := range []struct {
306 in string
307 off int
308 out string
309 ok bool
310 }{
311 {"", 0, "", false},
312 {"X", 0, "", false},
313 {"+", 0, "", false},
314 {"+08", 8 * 60 * 60, "", true},
315 {"-01:02:03", -1*60*60 - 2*60 - 3, "", true},
316 {"01", 1 * 60 * 60, "", true},
317 {"100", 100 * 60 * 60, "", true},
318 {"1000", 0, "", false},
319 {"8PDT", 8 * 60 * 60, "PDT", true},
320 } {
321 off, out, ok := time.TzsetOffset(test.in)
322 if off != test.off || out != test.out || ok != test.ok {
323 t.Errorf("tzsetName(%q) = %d, %q, %t, want %d, %q, %t", test.in, off, out, ok, test.off, test.out, test.ok)
324 }
325 }
326 }
327
328 func TestTzsetRule(t *testing.T) {
329 for _, test := range []struct {
330 in string
331 r time.Rule
332 out string
333 ok bool
334 }{
335 {"", time.Rule{}, "", false},
336 {"X", time.Rule{}, "", false},
337 {"J10", time.Rule{Kind: time.RuleJulian, Day: 10, Time: 2 * 60 * 60}, "", true},
338 {"20", time.Rule{Kind: time.RuleDOY, Day: 20, Time: 2 * 60 * 60}, "", true},
339 {"M1.2.3", time.Rule{Kind: time.RuleMonthWeekDay, Mon: 1, Week: 2, Day: 3, Time: 2 * 60 * 60}, "", true},
340 {"30/03:00:00", time.Rule{Kind: time.RuleDOY, Day: 30, Time: 3 * 60 * 60}, "", true},
341 {"M4.5.6/03:00:00", time.Rule{Kind: time.RuleMonthWeekDay, Mon: 4, Week: 5, Day: 6, Time: 3 * 60 * 60}, "", true},
342 {"M4.5.7/03:00:00", time.Rule{}, "", false},
343 {"M4.5.6/-04", time.Rule{Kind: time.RuleMonthWeekDay, Mon: 4, Week: 5, Day: 6, Time: -4 * 60 * 60}, "", true},
344 } {
345 r, out, ok := time.TzsetRule(test.in)
346 if r != test.r || out != test.out || ok != test.ok {
347 t.Errorf("tzsetName(%q) = %#v, %q, %t, want %#v, %q, %t", test.in, r, out, ok, test.r, test.out, test.ok)
348 }
349 }
350 }
351
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