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Source file src/time/zoneinfo_test.go

Documentation: time

     1  // Copyright 2014 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  	"os"
    10  	"reflect"
    11  	"testing"
    12  	"time"
    13  )
    14  
    15  func init() {
    16  	if time.ZoneinfoForTesting() != nil {
    17  		panic(fmt.Errorf("zoneinfo initialized before first LoadLocation"))
    18  	}
    19  }
    20  
    21  func TestEnvVarUsage(t *testing.T) {
    22  	time.ResetZoneinfoForTesting()
    23  
    24  	const testZoneinfo = "foo.zip"
    25  	const env = "ZONEINFO"
    26  
    27  	defer os.Setenv(env, os.Getenv(env))
    28  	os.Setenv(env, testZoneinfo)
    29  
    30  	// Result isn't important, we're testing the side effect of this command
    31  	time.LoadLocation("Asia/Jerusalem")
    32  	defer time.ResetZoneinfoForTesting()
    33  
    34  	if zoneinfo := time.ZoneinfoForTesting(); testZoneinfo != *zoneinfo {
    35  		t.Errorf("zoneinfo does not match env variable: got %q want %q", *zoneinfo, testZoneinfo)
    36  	}
    37  }
    38  
    39  func TestLoadLocationValidatesNames(t *testing.T) {
    40  	time.ResetZoneinfoForTesting()
    41  	const env = "ZONEINFO"
    42  	defer os.Setenv(env, os.Getenv(env))
    43  	os.Setenv(env, "")
    44  
    45  	bad := []string{
    46  		"/usr/foo/Foo",
    47  		"\\UNC\foo",
    48  		"..",
    49  		"a..",
    50  	}
    51  	for _, v := range bad {
    52  		_, err := time.LoadLocation(v)
    53  		if err != time.ErrLocation {
    54  			t.Errorf("LoadLocation(%q) error = %v; want ErrLocation", v, err)
    55  		}
    56  	}
    57  }
    58  
    59  func TestVersion3(t *testing.T) {
    60  	time.ForceZipFileForTesting(true)
    61  	defer time.ForceZipFileForTesting(false)
    62  	_, err := time.LoadLocation("Asia/Jerusalem")
    63  	if err != nil {
    64  		t.Fatal(err)
    65  	}
    66  }
    67  
    68  // Test that we get the correct results for times before the first
    69  // transition time. To do this we explicitly check early dates in a
    70  // couple of specific timezones.
    71  func TestFirstZone(t *testing.T) {
    72  	time.ForceZipFileForTesting(true)
    73  	defer time.ForceZipFileForTesting(false)
    74  
    75  	const format = "Mon, 02 Jan 2006 15:04:05 -0700 (MST)"
    76  	var tests = []struct {
    77  		zone  string
    78  		unix  int64
    79  		want1 string
    80  		want2 string
    81  	}{
    82  		{
    83  			"PST8PDT",
    84  			-1633269601,
    85  			"Sun, 31 Mar 1918 01:59:59 -0800 (PST)",
    86  			"Sun, 31 Mar 1918 03:00:00 -0700 (PDT)",
    87  		},
    88  		{
    89  			"Pacific/Fakaofo",
    90  			1325242799,
    91  			"Thu, 29 Dec 2011 23:59:59 -1100 (-11)",
    92  			"Sat, 31 Dec 2011 00:00:00 +1300 (+13)",
    93  		},
    94  	}
    95  
    96  	for _, test := range tests {
    97  		z, err := time.LoadLocation(test.zone)
    98  		if err != nil {
    99  			t.Fatal(err)
   100  		}
   101  		s := time.Unix(test.unix, 0).In(z).Format(format)
   102  		if s != test.want1 {
   103  			t.Errorf("for %s %d got %q want %q", test.zone, test.unix, s, test.want1)
   104  		}
   105  		s = time.Unix(test.unix+1, 0).In(z).Format(format)
   106  		if s != test.want2 {
   107  			t.Errorf("for %s %d got %q want %q", test.zone, test.unix, s, test.want2)
   108  		}
   109  	}
   110  }
   111  
   112  func TestLocationNames(t *testing.T) {
   113  	if time.Local.String() != "Local" {
   114  		t.Errorf(`invalid Local location name: got %q want "Local"`, time.Local)
   115  	}
   116  	if time.UTC.String() != "UTC" {
   117  		t.Errorf(`invalid UTC location name: got %q want "UTC"`, time.UTC)
   118  	}
   119  }
   120  
   121  func TestLoadLocationFromTZData(t *testing.T) {
   122  	time.ForceZipFileForTesting(true)
   123  	defer time.ForceZipFileForTesting(false)
   124  
   125  	const locationName = "Asia/Jerusalem"
   126  	reference, err := time.LoadLocation(locationName)
   127  	if err != nil {
   128  		t.Fatal(err)
   129  	}
   130  
   131  	tzinfo, err := time.LoadTzinfo(locationName, time.OrigZoneSources[len(time.OrigZoneSources)-1])
   132  	if err != nil {
   133  		t.Fatal(err)
   134  	}
   135  	sample, err := time.LoadLocationFromTZData(locationName, tzinfo)
   136  	if err != nil {
   137  		t.Fatal(err)
   138  	}
   139  
   140  	if !reflect.DeepEqual(reference, sample) {
   141  		t.Errorf("return values of LoadLocationFromTZData and LoadLocation don't match")
   142  	}
   143  }
   144  

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