214 lines
6.6 KiB
Go
214 lines
6.6 KiB
Go
// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Copyright 2018 PingCAP, Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSES/QL-LICENSE file.
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package timeutil
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import (
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"os"
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"path/filepath"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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func TestGetTZNameFromFileName(t *testing.T) {
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tz, err := inferTZNameFromFileName("/usr/share/zoneinfo/Asia/Shanghai")
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require.NoError(t, err)
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require.Equal(t, "Asia/Shanghai", tz)
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tz, err = inferTZNameFromFileName("/usr/share/zoneinfo.default/Asia/Shanghai")
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require.NoError(t, err)
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require.Equal(t, "Asia/Shanghai", tz)
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}
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func TestLocal(t *testing.T) {
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os.Setenv("TZ", "Asia/Shanghai")
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systemTZ.Store(InferSystemTZ())
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loc := SystemLocation()
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require.Equal(t, "Asia/Shanghai", systemTZ.Load())
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require.Equal(t, "Asia/Shanghai", loc.String())
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os.Setenv("TZ", "UTC")
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// reset systemTZ
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systemTZ.Store(InferSystemTZ())
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loc = SystemLocation()
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require.Equal(t, "UTC", loc.String())
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os.Setenv("TZ", "")
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// reset systemTZ
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systemTZ.Store(InferSystemTZ())
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loc = SystemLocation()
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require.Equal(t, "UTC", loc.String())
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os.Unsetenv("TZ")
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}
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func TestInferOneStepLinkForPath(t *testing.T) {
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os.Remove(filepath.Join(os.TempDir(), "testlink1"))
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os.Remove(filepath.Join(os.TempDir(), "testlink2"))
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os.Remove(filepath.Join(os.TempDir(), "testlink3"))
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var link2, link3 string
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var err error
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var link1 *os.File
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link1, err = os.Create(filepath.Join(os.TempDir(), "testlink1"))
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require.NoError(t, err)
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err = os.Symlink(link1.Name(), filepath.Join(os.TempDir(), "testlink2"))
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require.NoError(t, err)
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err = os.Symlink(filepath.Join(os.TempDir(), "testlink2"), filepath.Join(os.TempDir(), "testlink3"))
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require.NoError(t, err)
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link2, err = inferOneStepLinkForPath(filepath.Join(os.TempDir(), "testlink3"))
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require.NoError(t, err)
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require.Equal(t, filepath.Join(os.TempDir(), "testlink2"), link2)
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link3, err = filepath.EvalSymlinks(filepath.Join(os.TempDir(), "testlink3"))
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require.NoError(t, err)
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require.NotEqual(t, -1, strings.Index(link3, link1.Name()))
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}
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func TestParseTimeZone(t *testing.T) {
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SetSystemTZ("Asia/Tokyo")
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cases := []struct {
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name string
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offset int64
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invalid bool
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}{
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{
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name: "SYSTEM",
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offset: int64(9 * 3600),
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},
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{
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name: "system",
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offset: int64(9 * 3600),
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},
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{
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name: "Asia/Shanghai",
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offset: int64(8 * 3600),
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},
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{
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name: "Pacific/Honolulu",
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offset: int64(-10 * 3600),
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},
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{
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name: "-07:00",
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offset: int64(-7 * 3600),
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},
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{
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name: "+02:00",
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offset: int64(2 * 3600),
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},
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{
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name: "aa",
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invalid: true,
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},
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}
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for _, c := range cases {
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loc, err := ParseTimeZone(c.name)
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if c.invalid {
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require.True(t, ErrUnknownTimeZone.Equal(err))
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require.Nil(t, loc, c.name)
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continue
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}
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require.NoError(t, err)
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require.NotNil(t, loc, c.name)
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_, offset := Zone(loc)
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require.Equal(t, c.offset, offset, c.name)
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}
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}
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func TestConstructTimeZone(t *testing.T) {
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secondsEastOfUTC := int((8 * time.Hour).Seconds())
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loc, err := ConstructTimeZone("", secondsEastOfUTC)
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require.NoError(t, err)
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timeInLoc := time.Date(2018, 8, 15, 20, 0, 0, 0, loc)
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timeInUTC := time.Date(2018, 8, 15, 12, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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secondsEastOfUTC = int((-8 * time.Hour).Seconds())
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loc, err = ConstructTimeZone("", secondsEastOfUTC)
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require.NoError(t, err)
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timeInLoc = time.Date(2018, 8, 15, 12, 0, 0, 0, loc)
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timeInUTC = time.Date(2018, 8, 15, 20, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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secondsEastOfUTC = 0
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loc, err = ConstructTimeZone("", secondsEastOfUTC)
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require.NoError(t, err)
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timeInLoc = time.Date(2018, 8, 15, 20, 0, 0, 0, loc)
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timeInUTC = time.Date(2018, 8, 15, 20, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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// test the seconds east of UTC is ignored by the function
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// ConstructTimeZone().
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secondsEastOfUTC = int((23 * time.Hour).Seconds())
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loc, err = ConstructTimeZone("UTC", secondsEastOfUTC)
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require.NoError(t, err)
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timeInLoc = time.Date(2018, 8, 15, 12, 0, 0, 0, loc)
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timeInUTC = time.Date(2018, 8, 15, 12, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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// test the seconds east of UTC is ignored by the function
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// ConstructTimeZone().
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secondsEastOfUTC = int((-23 * time.Hour).Seconds())
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loc, err = ConstructTimeZone("UTC", secondsEastOfUTC)
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require.NoError(t, err)
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timeInLoc = time.Date(2018, 8, 15, 12, 0, 0, 0, loc)
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timeInUTC = time.Date(2018, 8, 15, 12, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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// test the seconds east of UTC is ignored by the function
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// ConstructTimeZone().
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loc, err = ConstructTimeZone("UTC", 0)
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require.NoError(t, err)
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timeInLoc = time.Date(2018, 8, 15, 12, 0, 0, 0, loc)
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timeInUTC = time.Date(2018, 8, 15, 12, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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// test the seconds east of UTC is ignored by the function
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// ConstructTimeZone().
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secondsEastOfUTC = int((-23 * time.Hour).Seconds())
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loc, err = ConstructTimeZone("Asia/Shanghai", secondsEastOfUTC)
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require.NoError(t, err)
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timeInLoc = time.Date(2018, 8, 15, 20, 0, 0, 0, loc)
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timeInUTC = time.Date(2018, 8, 15, 12, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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// test the seconds east of UTC is ignored by the function
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// ConstructTimeZone().
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secondsEastOfUTC = int((23 * time.Hour).Seconds())
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loc, err = ConstructTimeZone("Asia/Shanghai", secondsEastOfUTC)
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require.NoError(t, err)
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timeInLoc = time.Date(2018, 8, 15, 20, 0, 0, 0, loc)
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timeInUTC = time.Date(2018, 8, 15, 12, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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// test the seconds east of UTC is ignored by the function
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// ConstructTimeZone().
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loc, err = ConstructTimeZone("Asia/Shanghai", 0)
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require.NoError(t, err)
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timeInLoc = time.Date(2018, 8, 15, 20, 0, 0, 0, loc)
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timeInUTC = time.Date(2018, 8, 15, 12, 0, 0, 0, time.UTC)
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require.True(t, timeInLoc.Equal(timeInUTC))
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// test the timezone name is not existed.
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_, err = ConstructTimeZone("asia/not-exist", 0)
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require.EqualError(t, err, "invalid name for timezone asia/not-exist")
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}
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