(Feat): Initial Commit

internal/test/helper_mappers.go

@@ -0,0 +1,64 @@
+package test
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// GetMapFromStructByTag returns a map of a given struct using a tag name as key and
+// the string of the property value as value.
+// inspired by: https://stackoverflow.com/questions/55879028/golang-get-structs-field-name-by-json-tag
+func GetMapFromStructByTag(tag string, input any) map[string]string {
+	res := make(map[string]string)
+
+	inputType := reflect.TypeOf(input)
+	if inputType.Kind() != reflect.Struct {
+		return res
+	}
+
+	val := reflect.ValueOf(input)
+
+	for i := 0; i < inputType.NumField(); i++ {
+		f := inputType.Field(i)
+		tagvalue := strings.Split(f.Tag.Get(tag), ",")[0] // use split to ignore tag "options" like omitempty, etc.
+		if tagvalue == "" {
+			continue
+		}
+		field := val.Field(i)
+		if field.Kind() == reflect.Ptr {
+			if !field.IsNil() {
+				res[tagvalue] = fmt.Sprintf("%v", field.Elem().Interface())
+			}
+		} else {
+			res[tagvalue] = fmt.Sprintf("%v", field.Interface())
+		}
+	}
+
+	return res
+}
+
+func GetMapFromStruct(input any) map[string]string {
+	res := make(map[string]string)
+
+	inputType := reflect.TypeOf(input)
+	if inputType.Kind() != reflect.Struct {
+		return res
+	}
+
+	val := reflect.ValueOf(input)
+
+	for i := 0; i < inputType.NumField(); i++ {
+		field := inputType.Field(i)
+		fieldValue := val.Field(i)
+		if fieldValue.Kind() == reflect.Ptr {
+			if !fieldValue.IsNil() {
+				res[field.Name] = fmt.Sprintf("%v", fieldValue.Elem().Interface())
+			}
+		} else {
+			res[field.Name] = fmt.Sprintf("%v", fieldValue.Interface())
+		}
+	}
+
+	return res
+}