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dynstring_test.go
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dynstring_test.go
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// Copyright 2015 Michal Witkowski. All Rights Reserved.
// See LICENSE for licensing terms.
package flagz
import (
"regexp"
"testing"
"time"
flag "github.com/spf13/pflag"
"github.com/stretchr/testify/assert"
)
func TestDynString_SetAndGet(t *testing.T) {
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
dynFlag := DynString(set, "some_string_1", "something", "Use it or lose it")
assert.Equal(t, "something", dynFlag.Get(), "value must be default after create")
err := set.Set("some_string_1", "else")
assert.NoError(t, err, "setting value must succeed")
assert.Equal(t, "else", dynFlag.Get(), "value must be set after update")
}
func TestDynString_IsMarkedDynamic(t *testing.T) {
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
DynString(set, "some_string_1", "somethign", "Use it or lose it")
assert.True(t, IsFlagDynamic(set.Lookup("some_string_1")))
}
func TestDynString_FiresValidators(t *testing.T) {
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
regex := regexp.MustCompile("^[a-z]{2,8}$")
DynString(set, "some_string_1", "something", "Use it or lose it").WithValidator(ValidateDynStringMatchesRegex(regex))
assert.NoError(t, set.Set("some_string_1", "else"), "no error from validator when in range")
assert.Error(t, set.Set("some_string_1", "else1"), "error from validator when value out of range")
}
func TestDynString_FiresNotifier(t *testing.T) {
waitCh := make(chan bool, 1)
notifier := func(oldVal string, newVal string) {
assert.EqualValues(t, "something", oldVal, "old value in notify must match previous value")
assert.EqualValues(t, "somethingelse", newVal, "new value in notify must match set value")
waitCh <- true
}
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
DynString(set, "some_string_1", "something", "Use it or lose it").WithNotifier(notifier)
set.Set("some_string_1", "somethingelse")
select {
case <-time.After(5 * time.Millisecond):
assert.Fail(t, "failed to trigger notifier")
case <-waitCh:
}
}
func Benchmark_String_Dyn_Get(b *testing.B) {
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
value := DynString(set, "some_string_1", "something", "Use it or lose it")
set.Set("some_string_1", "else")
for i := 0; i < b.N; i++ {
x := value.Get()
x = x + "foo"
}
}
func Benchmark_String_Normal_get(b *testing.B) {
set := flag.NewFlagSet("foobar", flag.ContinueOnError)
valPtr := set.String("some_string_1", "something", "Use it or lose it")
set.Set("some_string_1", "else")
for i := 0; i < b.N; i++ {
x := *valPtr
x = x + "foo"
}
}