Merge remote-tracking branch 'origin/main' into components-impl-drop-indexes-use-xids

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>

shared/testing_helpers/populate_fields.go

@@ -0,0 +1,101 @@
+package testing_helpers
+
+import (
+	"fmt"
+	"net/netip"
+	"reflect"
+)
+
+type PopulateFields struct {
+	CustomFieldSetters map[reflect.Type]func(this *PopulateFields, field reflect.Value) (int, error)
+	TagsToSkip         map[string]string
+}
+
+func NewPopulateFields() *PopulateFields {
+	return &PopulateFields{CustomFieldSetters: defaultCustomFieldSetters(), TagsToSkip: make(map[string]string)}
+}
+
+func (p *PopulateFields) WithCustomFieldSetter(t reflect.Type, f func(this *PopulateFields, field reflect.Value) (int, error)) *PopulateFields {
+	p.CustomFieldSetters[t] = f
+	return p
+}
+
+func (p *PopulateFields) WithSkippedTag(tag, value string) *PopulateFields {
+	p.TagsToSkip[tag] = value
+	return p
+}
+
+func (p *PopulateFields) PopulateAll(v reflect.Value) (int, error) {
+	typ := v.Type()
+	totalExportedFields := 0
+	for i := 0; i < typ.NumField(); i++ {
+		f := typ.Field(i)
+		if f.PkgPath != "" { // unexported
+			continue
+		}
+
+		if p.skippedTagPresent(f.Tag) {
+			continue
+		}
+
+		numOfExportedFields, err := p.setNonZero(v.Field(i))
+		totalExportedFields += numOfExportedFields
+		if err != nil {
+			return totalExportedFields, err
+		}
+	}
+	return totalExportedFields, nil
+}
+
+// setNonZero assigns a deterministic non-zero value to a field based on its kind,
+// recursing into nested structs and populating one element of slice fields.
+func (p *PopulateFields) setNonZero(field reflect.Value) (int, error) {
+	if f, ok := p.CustomFieldSetters[field.Type()]; ok {
+		return f(p, field)
+	}
+
+	switch field.Kind() {
+	case reflect.String:
+		field.SetString("non-zero")
+	case reflect.Bool:
+		field.SetBool(true)
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		field.SetInt(7)
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		field.SetUint(7)
+	case reflect.Float32, reflect.Float64:
+		field.SetFloat(7)
+	case reflect.Struct:
+		n, err := p.PopulateAll(field)
+		return n + 1, err
+	case reflect.Slice:
+		s := reflect.MakeSlice(field.Type(), 1, 1)
+		_, err := p.setNonZero(s.Index(0))
+		if err != nil {
+			return 0, err
+		}
+		field.Set(s)
+	default:
+		return 0, fmt.Errorf("unhandled field kind %s; extend setNonZero", field.Kind())
+	}
+
+	return 1, nil
+}
+
+func defaultCustomFieldSetters() map[reflect.Type]func(this *PopulateFields, field reflect.Value) (int, error) {
+	return map[reflect.Type]func(this *PopulateFields, field reflect.Value) (int, error){
+		reflect.TypeOf(netip.Prefix{}): func(_ *PopulateFields, field reflect.Value) (int, error) {
+			field.Set(reflect.ValueOf(netip.MustParsePrefix("10.0.0.0/24")))
+			return 1, nil
+		},
+	}
+}
+
+func (p *PopulateFields) skippedTagPresent(t reflect.StructTag) bool {
+	for tag, value := range p.TagsToSkip {
+		if v := t.Get(tag); v == value {
+			return true
+		}
+	}
+	return false
+}