mirror of
https://github.com/spf13/viper
synced 2024-06-01 17:39:10 +00:00
66249a6550
Using an interface allows people to use their favourite flag system with viper without being restricted to the semantics of pflag or the standard library. This change introduce two new functions `BindFlagValues` and `BindFlagValue` that behave like `BindFlags` and `BindFlag` but using the new interface as values. This change also introduces two internal structures to transform `*pflag.FlagSet` and `*pflag.Flag` into the new interface. This way, viper keeps working as expected for people that are currently using the pflag package without breaking backwards compatibility. Signed-off-by: David Calavera <david.calavera@gmail.com>
67 lines
1.3 KiB
Go
67 lines
1.3 KiB
Go
package viper
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import (
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"testing"
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"github.com/spf13/pflag"
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"github.com/stretchr/testify/assert"
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)
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func TestBindFlagValueSet(t *testing.T) {
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flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError)
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var testValues = map[string]*string{
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"host": nil,
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"port": nil,
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"endpoint": nil,
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}
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var mutatedTestValues = map[string]string{
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"host": "localhost",
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"port": "6060",
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"endpoint": "/public",
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}
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for name, _ := range testValues {
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testValues[name] = flagSet.String(name, "", "test")
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}
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flagValueSet := pflagValueSet{flagSet}
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err := BindFlagValues(flagValueSet)
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if err != nil {
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t.Fatalf("error binding flag set, %v", err)
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}
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flagSet.VisitAll(func(flag *pflag.Flag) {
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flag.Value.Set(mutatedTestValues[flag.Name])
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flag.Changed = true
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})
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for name, expected := range mutatedTestValues {
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assert.Equal(t, Get(name), expected)
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}
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}
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func TestBindFlagValue(t *testing.T) {
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var testString = "testing"
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var testValue = newStringValue(testString, &testString)
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flag := &pflag.Flag{
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Name: "testflag",
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Value: testValue,
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Changed: false,
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}
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flagValue := pflagValue{flag}
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BindFlagValue("testvalue", flagValue)
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assert.Equal(t, testString, Get("testvalue"))
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flag.Value.Set("testing_mutate")
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flag.Changed = true //hack for pflag usage
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assert.Equal(t, "testing_mutate", Get("testvalue"))
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}
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