51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
package testutil
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import (
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"strings"
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"testing"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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)
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// ResetArgs resets arguments for the command. It is desired to be a helpful function for the cmd.SetArgs
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// in the case of calling multiple times in a unit test, as cmd.SetArgs doesn't
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// reset the flag value as expected.
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//
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// **Warning**: this is only compatible with following flag types:
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// 1. the implementations of pflag.Value
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// 2. the built-in implementations of pflag.SliceValue
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// 3. the custom implementations of pflag.SliceValue that are split by comma ","
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//
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// see https://github.com/spf13/cobra/issues/2079#issuecomment-1870115781 for more detail info
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func ResetArgs(t *testing.T, cmd *cobra.Command) {
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t.Helper()
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// if flags haven't been parsed yet, there is no need to reset the args
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if !cmd.Flags().Parsed() {
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return
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}
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// If flags have already been parsed, we should reset the values of flags that haven't been set
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cmd.Flags().Visit(func(pf *pflag.Flag) {
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// if the flag hasn't been changed, there is no need to reset the args
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if !pf.Changed {
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return
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}
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// handle pflag.SliceValue
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if v, ok := pf.Value.(pflag.SliceValue); ok {
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defVal := strings.Trim(pf.DefValue, "[]")
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defSliceVal := make([]string, 0)
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if defVal != "" {
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defSliceVal = strings.Split(defVal, ",")
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}
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if err := v.Replace(defSliceVal); err != nil {
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t.Errorf("error resetting argument <%s> with default value <%+v>: %v", pf.Name, defSliceVal, err)
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}
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return
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}
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// handle pflag.Value
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if err := pf.Value.Set(pf.DefValue); err != nil {
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t.Errorf("error resetting argument <%s> with default value <%s>: %v", pf.Name, pf.DefValue, err)
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}
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})
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}
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