mirror of
https://github.com/netbirdio/netbird.git
synced 2026-08-08 02:55:28 -04:00
85 lines
2.5 KiB
Go
85 lines
2.5 KiB
Go
package nmdata
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import (
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"reflect"
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"testing"
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)
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// TestGroupCopy_AllFieldsCopied fills every Group field with a unique non-zero
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// value derived from its field path, so a field added to Group but forgotten
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// in Copy fails here by name without the test needing an update. The unique
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// per-path values also catch fields swapped inside Copy.
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func TestGroupCopy_AllFieldsCopied(t *testing.T) {
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src := &Group{}
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seed := 0
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fillValue(t, reflect.ValueOf(src).Elem(), "Group", &seed)
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copied := src.Copy()
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srcV := reflect.ValueOf(src).Elem()
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copiedV := reflect.ValueOf(copied).Elem()
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for i := 0; i < srcV.NumField(); i++ {
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name := srcV.Type().Field(i).Name
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if !reflect.DeepEqual(srcV.Field(i).Interface(), copiedV.Field(i).Interface()) {
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t.Errorf("field %s not copied: src=%#v copy=%#v",
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name, srcV.Field(i).Interface(), copiedV.Field(i).Interface())
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}
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}
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for i := 0; i < srcV.NumField(); i++ {
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f := srcV.Field(i)
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if f.Kind() != reflect.Slice || f.Len() == 0 {
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continue
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}
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name := srcV.Type().Field(i).Name
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fillValue(t, f.Index(0), name+"-mutated", &seed)
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if reflect.DeepEqual(f.Interface(), copiedV.Field(i).Interface()) {
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t.Errorf("field %s shares memory with the copy", name)
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}
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}
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}
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// fillValue sets v to a deterministic non-zero value derived from its field
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// path. Kinds it does not handle fail the test loudly, so the filler is
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// extended together with the struct instead of silently under-testing new
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// fields.
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func fillValue(t *testing.T, v reflect.Value, path string, seed *int) {
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t.Helper()
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switch v.Kind() {
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case reflect.String:
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v.SetString(path)
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case reflect.Bool:
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v.SetBool(true)
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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*seed++
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v.SetInt(int64(*seed))
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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*seed++
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v.SetUint(uint64(*seed))
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case reflect.Float32, reflect.Float64:
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*seed++
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v.SetFloat(float64(*seed))
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case reflect.Slice:
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s := reflect.MakeSlice(v.Type(), 2, 2)
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fillValue(t, s.Index(0), path+"[0]", seed)
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fillValue(t, s.Index(1), path+"[1]", seed)
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v.Set(s)
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case reflect.Struct:
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settable := 0
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for i := 0; i < v.NumField(); i++ {
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f := v.Field(i)
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if !f.CanSet() {
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continue
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}
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settable++
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fillValue(t, f, path+"."+v.Type().Field(i).Name, seed)
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}
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if settable == 0 {
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t.Fatalf("struct %s at %s has no settable fields — extend fillValue to construct it", v.Type(), path)
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}
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default:
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t.Fatalf("unsupported kind %s at %s — extend fillValue", v.Kind(), path)
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}
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}
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