Adjust timezone logic
This commit adjusts the previous commit re. the new `ToTimeInDefaultLocationE` and related functions.
The functional change is that we don't default to any location if not provided from the caller.
This is in line with how `ToTime` worked before we started this, and even if the default behaviour may look weird in some cases, it will not break anything.
Most applications will want to use the new *InDefaultLocation functions and decide which default location to use:
```go
loc := time.Local
if config.Location != "" {
loc = time.LoadLocation(config.Location)
}
t, err := StringToDateInDefaultLocation("2019-01-01", loc)
```
This commit also configure Travis to test on OSX and Windows in addition to Linux.
This commit is contained in:
Bjørn Erik Pedersen
förälder
b1aa5f0c52
incheckning
f31dc0aaab
@ -8,9 +8,14 @@ go:
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- tip
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os:
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- linux
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- osx
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- windows
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matrix:
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allow_failures:
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- go: tip
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exclude:
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- os: windows
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go: tip
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fast_finish: true
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script:
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- make check
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- if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then go test -v -race ./...; else make check; fi
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12
Makefile
12
Makefile
@ -1,15 +1,15 @@
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GOVERSION := $(shell go version | cut -d ' ' -f 3 | cut -d '.' -f 2)
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.PHONY: check fmt lint test test-race vet test-cover-html help
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.PHONY: check fmt test test-race vet test-cover-html help
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.DEFAULT_GOAL := help
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check: test-race fmt vet lint ## Run tests and linters
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check: test-race fmt vet ## Run tests and linters
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test: ## Run tests
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go test ./...
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test-race: ## Run tests with race detector
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go test -race ./...
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go test -v -race ./...
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fmt: ## Run gofmt linter
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ifeq "$(GOVERSION)" "12"
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@ -20,12 +20,6 @@ ifeq "$(GOVERSION)" "12"
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done
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endif
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lint: ## Run golint linter
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@for d in `go list` ; do \
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if [ "`golint $$d | tee /dev/stderr`" ]; then \
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echo "^ golint errors!" && echo && exit 1; \
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fi \
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done
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vet: ## Run go vet linter
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@if [ "`go vet | tee /dev/stderr`" ]; then \
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3
cast.go
3
cast.go
@ -20,6 +20,9 @@ func ToTime(i interface{}) time.Time {
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return v
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}
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// ToTimeInDefaultLocationE casts an empty interface to time.Time,
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// interpreting inputs without a timezone to be in the given location.
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// To fall back to the local timezone, use time.Local as the last argument.
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func ToTimeInDefaultLocation(i interface{}, location *time.Location) time.Time {
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v, _ := ToTimeInDefaultLocationE(i, location)
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return v
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216
cast_test.go
216
cast_test.go
@ -8,10 +8,12 @@ package cast
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import (
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"fmt"
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"html/template"
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"path"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestToUintE(t *testing.T) {
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@ -1173,7 +1175,7 @@ func TestIndirectPointers(t *testing.T) {
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assert.Equal(t, ToInt(z), 13)
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}
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func TestToTimeEE(t *testing.T) {
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func TestToTime(t *testing.T) {
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tests := []struct {
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input interface{}
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expect time.Time
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@ -1286,147 +1288,123 @@ func TestToDurationE(t *testing.T) {
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}
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}
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func TestToTime(t *testing.T) {
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func TestToTimeWithTimezones(t *testing.T) {
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est, err := time.LoadLocation("EST")
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if !assert.NoError(t, err) {
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return
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}
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require.NoError(t, err)
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irn, err := time.LoadLocation("Iran")
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if !assert.NoError(t, err) {
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return
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}
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require.NoError(t, err)
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swd, err := time.LoadLocation("Europe/Stockholm")
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if !assert.NoError(t, err) {
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return
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}
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// time.Parse*() fns handle the target & local timezones being the same
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// differently, so make sure we use one of the timezones as local by
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// temporarily change it.
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if !locationEqual(time.Local, swd) {
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var originalLocation *time.Location
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originalLocation, time.Local = time.Local, swd
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defer func() {
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time.Local = originalLocation
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}()
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}
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require.NoError(t, err)
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// Test same local time in different timezones
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utc2016 := time.Date(2016, time.January, 1, 0, 0, 0, 0, time.UTC)
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est2016 := time.Date(2016, time.January, 1, 0, 0, 0, 0, est)
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irn2016 := time.Date(2016, time.January, 1, 0, 0, 0, 0, irn)
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swd2016 := time.Date(2016, time.January, 1, 0, 0, 0, 0, swd)
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utc2016 := time.Date(2016, time.January, 1, 3, 1, 0, 0, time.UTC)
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est2016 := time.Date(2016, time.January, 1, 3, 1, 0, 0, est)
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irn2016 := time.Date(2016, time.January, 1, 3, 1, 0, 0, irn)
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loc2016 := time.Date(2016, time.January, 1, 3, 1, 0, 0, time.Local)
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for _, format := range timeFormats {
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t.Logf("Checking time format '%s', has timezone: %v", format.format, format.hasTimezone)
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est2016str := est2016.Format(format.format)
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if !assert.NotEmpty(t, est2016str) {
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for i, format := range timeFormats {
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format := format
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if format.typ == timeFormatShort {
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continue
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}
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swd2016str := swd2016.Format(format.format)
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if !assert.NotEmpty(t, swd2016str) {
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continue
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}
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nameBase := fmt.Sprintf("%d;timeFormatType=%d;%s", i, format.typ, format.format)
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// Test conversion without a default location
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converted, err := ToTimeE(est2016str)
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if assert.NoError(t, err) {
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if format.hasTimezone {
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// Converting inputs with a timezone should preserve it
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assertTimeEqual(t, est2016, converted)
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assertLocationEqual(t, est, converted.Location())
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} else {
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// Converting inputs without a timezone should be interpreted
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// as a local time in UTC.
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assertTimeEqual(t, utc2016, converted)
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assertLocationEqual(t, time.UTC, converted.Location())
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}
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}
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t.Run(path.Join(nameBase), func(t *testing.T) {
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est2016str := est2016.Format(format.format)
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loc2016str := loc2016.Format(format.format)
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// Test conversion of a time in the local timezone without a default
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// location
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converted, err = ToTimeE(swd2016str)
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if assert.NoError(t, err) {
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if format.hasTimezone {
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// Converting inputs with a timezone should preserve it
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assertTimeEqual(t, swd2016, converted)
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assertLocationEqual(t, swd, converted.Location())
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} else {
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// Converting inputs without a timezone should be interpreted
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// as a local time in UTC.
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assertTimeEqual(t, utc2016, converted)
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assertLocationEqual(t, time.UTC, converted.Location())
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}
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}
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t.Run("without default location", func(t *testing.T) {
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assert := require.New(t)
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converted, err := ToTimeE(est2016str)
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assert.NoError(err)
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if format.hasNumericTimezone() {
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assertTimeEqual(t, est2016, converted)
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assertLocationEqual(t, est, converted.Location())
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} else {
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assertTimeEqual(t, utc2016, converted)
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assertLocationEqual(t, time.UTC, converted.Location())
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}
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})
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// Conversion with a nil default location sould have same behavior
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converted, err = ToTimeInDefaultLocationE(est2016str, nil)
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if assert.NoError(t, err) {
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if format.hasTimezone {
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// Converting inputs with a timezone should preserve it
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assertTimeEqual(t, est2016, converted)
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assertLocationEqual(t, est, converted.Location())
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} else {
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// Converting inputs without a timezone should be interpreted
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// as a local time in the local timezone.
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assertTimeEqual(t, swd2016, converted)
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assertLocationEqual(t, swd, converted.Location())
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}
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}
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t.Run("local timezone without a default location", func(t *testing.T) {
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assert := require.New(t)
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converted, err := ToTimeE(loc2016str)
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assert.NoError(err)
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if format.hasAnyTimezone() {
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// Local timezone strings can be either named or numeric and
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// time.Parse connects the dots.
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assertTimeEqual(t, loc2016, converted)
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assertLocationEqual(t, time.Local, converted.Location())
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} else {
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assertTimeEqual(t, utc2016, converted)
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assertLocationEqual(t, time.UTC, converted.Location())
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}
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})
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// Test conversion with a default location that isn't UTC
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converted, err = ToTimeInDefaultLocationE(est2016str, irn)
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if assert.NoError(t, err) {
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if format.hasTimezone {
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// Converting inputs with a timezone should preserve it
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assertTimeEqual(t, est2016, converted)
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assertLocationEqual(t, est, converted.Location())
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} else {
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// Converting inputs without a timezone should be interpreted
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// as a local time in the given location.
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assertTimeEqual(t, irn2016, converted)
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assertLocationEqual(t, irn, converted.Location())
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}
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}
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t.Run("nil default location", func(t *testing.T) {
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assert := require.New(t)
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// Test conversion of a time in the local timezone with a default
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// location that isn't UTC
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converted, err = ToTimeInDefaultLocationE(swd2016str, irn)
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if assert.NoError(t, err) {
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if format.hasTimezone {
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// Converting inputs with a timezone should preserve it
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assertTimeEqual(t, swd2016, converted)
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assertLocationEqual(t, swd, converted.Location())
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} else {
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// Converting inputs without a timezone should be interpreted
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// as a local time in the given location.
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assertTimeEqual(t, irn2016, converted)
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assertLocationEqual(t, irn, converted.Location())
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}
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}
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converted, err := ToTimeInDefaultLocationE(est2016str, nil)
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assert.NoError(err)
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if format.hasNumericTimezone() {
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assertTimeEqual(t, est2016, converted)
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assertLocationEqual(t, est, converted.Location())
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} else {
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assertTimeEqual(t, utc2016, converted)
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assertLocationEqual(t, time.UTC, converted.Location())
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}
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})
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t.Run("default location not UTC", func(t *testing.T) {
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assert := require.New(t)
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converted, err := ToTimeInDefaultLocationE(est2016str, irn)
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assert.NoError(err)
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if format.hasNumericTimezone() {
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assertTimeEqual(t, est2016, converted)
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assertLocationEqual(t, est, converted.Location())
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} else {
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assertTimeEqual(t, irn2016, converted)
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assertLocationEqual(t, irn, converted.Location())
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}
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})
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t.Run("time in the local timezone default location not UTC", func(t *testing.T) {
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assert := require.New(t)
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converted, err := ToTimeInDefaultLocationE(loc2016str, irn)
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assert.NoError(err)
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if format.hasNumericTimezone() {
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assertTimeEqual(t, loc2016, converted)
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assertLocationEqual(t, time.Local, converted.Location())
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} else {
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assertTimeEqual(t, irn2016, converted)
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assertLocationEqual(t, irn, converted.Location())
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}
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})
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})
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}
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}
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func assertTimeEqual(t *testing.T, expected, actual time.Time, msgAndArgs ...interface{}) bool {
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if !expected.Equal(actual) {
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return assert.Fail(t, fmt.Sprintf("Expected time '%s', got '%s'", expected, actual), msgAndArgs...)
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}
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return true
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func assertTimeEqual(t *testing.T, expected, actual time.Time) {
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t.Helper()
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require.True(t, expected.Equal(actual), fmt.Sprintf("expected\n%s\ngot\n%s", expected, actual))
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format := "2006-01-02 15:04:05.999999999 -0700"
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require.Equal(t, expected.Format(format), actual.Format(format))
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}
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|
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func assertLocationEqual(t *testing.T, expected, actual *time.Location, msgAndArgs ...interface{}) bool {
|
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if !locationEqual(expected, actual) {
|
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return assert.Fail(t, fmt.Sprintf("Expected location '%s', got '%s'", expected, actual), msgAndArgs...)
|
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}
|
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return true
|
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func assertLocationEqual(t *testing.T, expected, actual *time.Location) {
|
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t.Helper()
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require.True(t, locationEqual(expected, actual), fmt.Sprintf("Expected location '%s', got '%s'", expected, actual))
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}
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|
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func locationEqual(a, b *time.Location) bool {
|
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// A note about comparring time.Locations:
|
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// A note about comparing time.Locations:
|
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// - can't only compare pointers
|
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// - can't compare loc.String() because locations with the same
|
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// name can have different offsets
|
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|
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121
caste.go
121
caste.go
@ -20,12 +20,12 @@ var errNegativeNotAllowed = errors.New("unable to cast negative value")
|
||||
|
||||
// ToTimeE casts an interface to a time.Time type.
|
||||
func ToTimeE(i interface{}) (tim time.Time, err error) {
|
||||
return ToTimeInDefaultLocationE(i, time.UTC)
|
||||
return ToTimeInDefaultLocationE(i, nil)
|
||||
}
|
||||
|
||||
// ToTimeInDefaultLocationE casts an empty interface to time.Time,
|
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// interpreting inputs without a timezone to be in the given location,
|
||||
// or the local timezone if nil.
|
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// interpreting inputs without a timezone to be in the given location.
|
||||
// To fall back to the local timezone, use time.Local as the last argument.
|
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func ToTimeInDefaultLocationE(i interface{}, location *time.Location) (tim time.Time, err error) {
|
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i = indirect(i)
|
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|
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@ -1211,66 +1211,31 @@ func ToDurationSliceE(i interface{}) ([]time.Duration, error) {
|
||||
// predefined list of formats. If no suitable format is found, an error is
|
||||
// returned.
|
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func StringToDate(s string) (time.Time, error) {
|
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return StringToDateInDefaultLocation(s, time.UTC)
|
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return parseDateWith(s, nil, timeFormats)
|
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}
|
||||
|
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// StringToDateInDefaultLocation casts an empty interface to a time.Time,
|
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// interpreting inputs without a timezone to be in the given location,
|
||||
// or the local timezone if nil.
|
||||
// StringToDateInDefaultLocation to parse a string into a time.Time type using a
|
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// predefined list of formats, interpreting inputs without a timezone to be in
|
||||
// the given location.
|
||||
// To fall back to the local timezone, use time.Local as the last argument.
|
||||
func StringToDateInDefaultLocation(s string, location *time.Location) (time.Time, error) {
|
||||
if location == nil {
|
||||
location = time.Local
|
||||
}
|
||||
return parseDateWith(s, location, timeFormats)
|
||||
}
|
||||
|
||||
type timeFormat struct {
|
||||
format string
|
||||
hasTimezone bool
|
||||
}
|
||||
|
||||
var (
|
||||
timeFormats = []timeFormat{
|
||||
timeFormat{time.RFC3339, true},
|
||||
timeFormat{"2006-01-02T15:04:05", false}, // iso8601 without timezone
|
||||
timeFormat{time.RFC1123Z, true},
|
||||
timeFormat{time.RFC1123, false},
|
||||
timeFormat{time.RFC822Z, true},
|
||||
timeFormat{time.RFC822, false},
|
||||
|
||||
timeFormat{time.RFC850, true},
|
||||
timeFormat{"2006-01-02 15:04:05.999999999 -0700 MST", true}, // Time.String()
|
||||
timeFormat{"2006-01-02T15:04:05-0700", true}, // RFC3339 without timezone hh:mm colon
|
||||
timeFormat{"2006-01-02 15:04:05Z0700", true}, // RFC3339 without T or timezone hh:mm colon
|
||||
timeFormat{"2006-01-02 15:04:05", false},
|
||||
|
||||
timeFormat{time.ANSIC, false},
|
||||
timeFormat{time.UnixDate, false},
|
||||
timeFormat{time.RubyDate, true},
|
||||
timeFormat{"2006-01-02 15:04:05Z07:00", true},
|
||||
timeFormat{"2006-01-02", false},
|
||||
timeFormat{"02 Jan 2006", false},
|
||||
timeFormat{"2006-01-02 15:04:05 -07:00", true},
|
||||
timeFormat{"2006-01-02 15:04:05 -0700", true},
|
||||
timeFormat{time.Kitchen, false},
|
||||
timeFormat{time.Stamp, false},
|
||||
timeFormat{time.StampMilli, false},
|
||||
timeFormat{time.StampMicro, false},
|
||||
timeFormat{time.StampNano, false},
|
||||
}
|
||||
)
|
||||
|
||||
func parseDateWith(s string, defaultLocation *time.Location, formats []timeFormat) (d time.Time, e error) {
|
||||
func parseDateWith(s string, location *time.Location, formats []timeFormat) (d time.Time, e error) {
|
||||
for _, format := range formats {
|
||||
if d, e = time.Parse(format.format, s); e == nil {
|
||||
|
||||
// Some time formats have a zone name, but no offset, so it gets
|
||||
// put in that zone name (not the default one passed in to us), but
|
||||
// without that zone's offset. So set the location manually.
|
||||
if !format.hasTimezone && defaultLocation != nil {
|
||||
// Note that we only do this when we get a location in the new *InDefaultLocation
|
||||
// variants to avoid breaking existing behaviour in ToTime, however
|
||||
// weird that existing behaviour may be.
|
||||
if location != nil && !format.hasNumericTimezone() {
|
||||
year, month, day := d.Date()
|
||||
hour, min, sec := d.Clock()
|
||||
d = time.Date(year, month, day, hour, min, sec, d.Nanosecond(), defaultLocation)
|
||||
d = time.Date(year, month, day, hour, min, sec, d.Nanosecond(), location)
|
||||
}
|
||||
|
||||
return
|
||||
@ -1279,6 +1244,64 @@ func parseDateWith(s string, defaultLocation *time.Location, formats []timeForma
|
||||
return d, fmt.Errorf("unable to parse date: %s", s)
|
||||
}
|
||||
|
||||
type timeFormatType int
|
||||
|
||||
const (
|
||||
timeFormatShort timeFormatType = iota // time or date only, no timezone
|
||||
timeFormatNoTimezone
|
||||
|
||||
// All below have some kind of timezone information, a name and/or offset.
|
||||
timeFormatNamedTimezone
|
||||
|
||||
// All below have what we consider to be solid timezone information.
|
||||
timeFormatNumericAndNamedTimezone
|
||||
timeFormatNumericTimezone
|
||||
)
|
||||
|
||||
type timeFormat struct {
|
||||
format string
|
||||
typ timeFormatType
|
||||
}
|
||||
|
||||
func (f timeFormat) hasNumericTimezone() bool {
|
||||
return f.typ >= timeFormatNumericAndNamedTimezone
|
||||
}
|
||||
|
||||
func (f timeFormat) hasAnyTimezone() bool {
|
||||
return f.typ >= timeFormatNamedTimezone
|
||||
}
|
||||
|
||||
var (
|
||||
timeFormats = []timeFormat{
|
||||
{time.RFC3339, timeFormatNumericTimezone},
|
||||
{"2006-01-02T15:04:05", timeFormatNoTimezone}, // iso8601 without timezone
|
||||
{time.RFC1123Z, timeFormatNumericTimezone},
|
||||
{time.RFC1123, timeFormatNamedTimezone},
|
||||
{time.RFC822Z, timeFormatNumericTimezone},
|
||||
{time.RFC822, timeFormatNamedTimezone},
|
||||
{time.RFC850, timeFormatNamedTimezone},
|
||||
{"2006-01-02 15:04:05.999999999 -0700 MST", timeFormatNumericAndNamedTimezone}, // Time.String()
|
||||
{"2006-01-02T15:04:05-0700", timeFormatNumericTimezone}, // RFC3339 without timezone hh:mm colon
|
||||
{"2006-01-02 15:04:05Z0700", timeFormatNumericTimezone}, // RFC3339 without T or timezone hh:mm colon
|
||||
{"2006-01-02 15:04:05", timeFormatNoTimezone},
|
||||
{time.ANSIC, timeFormatNoTimezone},
|
||||
// Must try RubyDate before UnixDate, see:
|
||||
// https://github.com/golang/go/issues/32358
|
||||
{time.RubyDate, timeFormatNumericTimezone},
|
||||
{time.UnixDate, timeFormatNamedTimezone},
|
||||
{"2006-01-02 15:04:05Z07:00", timeFormatNumericTimezone},
|
||||
{"2006-01-02", timeFormatShort},
|
||||
{"02 Jan 2006", timeFormatShort},
|
||||
{"2006-01-02 15:04:05 -07:00", timeFormatNumericTimezone},
|
||||
{"2006-01-02 15:04:05 -0700", timeFormatNumericTimezone},
|
||||
{time.Kitchen, timeFormatShort},
|
||||
{time.Stamp, timeFormatShort},
|
||||
{time.StampMilli, timeFormatShort},
|
||||
{time.StampMicro, timeFormatShort},
|
||||
{time.StampNano, timeFormatShort},
|
||||
}
|
||||
)
|
||||
|
||||
// jsonStringToObject attempts to unmarshall a string as JSON into
|
||||
// the object passed as pointer.
|
||||
func jsonStringToObject(s string, v interface{}) error {
|
||||
|
||||
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