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76 lines
1.7 KiB
76 lines
1.7 KiB
package config
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import (
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"flag"
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"reflect"
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"testing"
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)
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func TestCopyFlags(t *testing.T) {
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type args struct {
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source *flag.FlagSet
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target *flag.FlagSet
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}
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tests := []struct {
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name string
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args args
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wantErr bool
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}{
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{
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name: "Copy empty source to empty target",
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args: args{
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source: flag.NewFlagSet("source", flag.ContinueOnError),
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target: flag.NewFlagSet("target", flag.ContinueOnError),
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},
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wantErr: false,
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},
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{
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name: "Copy non-empty source to empty target",
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args: args{
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source: func() *flag.FlagSet {
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fs := flag.NewFlagSet("source", flag.ContinueOnError)
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fs.String("test-flag", "default", "test usage")
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return fs
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}(),
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target: flag.NewFlagSet("target", flag.ContinueOnError),
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},
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wantErr: false,
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},
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{
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name: "Copy source to target with existing flag",
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args: args{
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source: func() *flag.FlagSet {
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fs := flag.NewFlagSet("source", flag.ContinueOnError)
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fs.String("test-flag", "default", "test usage")
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return fs
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}(),
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target: func() *flag.FlagSet {
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fs := flag.NewFlagSet("target", flag.ContinueOnError)
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fs.String("test-flag", "default", "test usage")
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return fs
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}(),
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},
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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defer func() {
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if r := recover(); (r != nil) != tt.wantErr {
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t.Errorf("CopyFlags() panic = %v, wantErr %v", r, tt.wantErr)
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}
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}()
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CopyFlags(tt.args.source, tt.args.target)
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// 验证复制的标记
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if !tt.wantErr {
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tt.args.source.VisitAll(func(f *flag.Flag) {
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if gotFlag := tt.args.target.Lookup(f.Name); gotFlag == nil || !reflect.DeepEqual(gotFlag, f) {
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t.Errorf("CopyFlags() failed to copy flag %s", f.Name)
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}
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})
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}
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})
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}
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}
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