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dynstringslice_test.go
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dynstringslice_test.go
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// Copyright 2015 Michal Witkowski. All Rights Reserved.
// See LICENSE for licensing terms.
package flagz
import (
"testing"
"time"
flag "github.com/spf13/pflag"
"github.com/stretchr/testify/assert"
)
func TestDynStringSlice_SetAndGet(t *testing.T) {
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
dynFlag := DynStringSlice(set, "some_stringslice_1", []string{"foo", "bar"}, "Use it or lose it")
assert.Equal(t, []string{"foo", "bar"}, dynFlag.Get(), "value must be default after create")
err := set.Set("some_stringslice_1", "car,bar")
assert.NoError(t, err, "setting value must succeed")
assert.Equal(t, []string{"car", "bar"}, dynFlag.Get(), "value must be set after update")
}
func TestDynStringSlice_IsMarkedDynamic(t *testing.T) {
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
DynStringSlice(set, "some_stringslice_1", []string{"foo", "bar"}, "Use it or lose it")
assert.True(t, IsFlagDynamic(set.Lookup("some_stringslice_1")))
}
func TestDynStringSlice_FiresValidators(t *testing.T) {
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
DynStringSlice(set, "some_stringslice_1", []string{"foo", "bar"}, "Use it or lose it").WithValidator(ValidateDynStringSliceMinElements(2))
assert.NoError(t, set.Set("some_stringslice_1", "car,far"), "no error from validator when in range")
assert.Error(t, set.Set("some_stringslice_1", "car"), "error from validator when value out of range")
}
func TestDynStringSlice_FiresNotifier(t *testing.T) {
waitCh := make(chan bool, 1)
notifier := func(oldVal []string, newVal []string) {
assert.EqualValues(t, []string{"foo", "bar"}, oldVal, "old value in notify must match previous value")
assert.EqualValues(t, []string{"car", "far"}, newVal, "new value in notify must match set value")
waitCh <- true
}
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
DynStringSlice(set, "some_stringslice_1", []string{"foo", "bar"}, "Use it or lose it").WithNotifier(notifier)
set.Set("some_stringslice_1", "car,far")
select {
case <-time.After(5 * time.Millisecond):
assert.Fail(t, "failed to trigger notifier")
case <-waitCh:
}
}