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90 lines
2.3 KiB
90 lines
2.3 KiB
// Copyright © 2023 OpenIM. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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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// Verify the replicated tag
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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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