diff --git a/config/objdp.go b/config/objdp.go
index c8c43d187..3e19f002a 100644
--- a/config/objdp.go
+++ b/config/objdp.go
@@ -28,7 +28,10 @@ import (
 
 //NewObjectDP constructs a utils.DataProvider
 func NewObjectDP(obj interface{}) (dP utils.DataProvider) {
-	dP = &ObjectDP{obj: obj, cache: make(map[string]interface{})}
+	dP = &ObjectDP{
+		obj:   obj,
+		cache: make(map[string]interface{}),
+	}
 	return
 }
 
diff --git a/config/objdp_test.go b/config/objdp_test.go
new file mode 100644
index 000000000..b8c91d438
--- /dev/null
+++ b/config/objdp_test.go
@@ -0,0 +1,192 @@
+/*
+Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
+Copyright (C) ITsysCOM GmbH
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>
+*/
+
+package config
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/cgrates/cgrates/utils"
+)
+
+func TestNewObjectDP(t *testing.T) {
+	object := "cgrates.org"
+	objDp := &ObjectDP{
+		obj:   "cgrates.org",
+		cache: make(map[string]interface{}),
+	}
+	if received := NewObjectDP(object); !reflect.DeepEqual(objDp, received) {
+		t.Errorf("Expected %+v, received %+v", objDp, received)
+	}
+}
+
+func TestRemoteHostObjDP(t *testing.T) {
+	expected := utils.LocalAddr()
+	objDp := &ObjectDP{
+		obj:   "cgrates.org",
+		cache: make(map[string]interface{}),
+	}
+	if received := objDp.RemoteHost(); !reflect.DeepEqual(expected, received) {
+		t.Errorf("Expected %+v, received %+v", expected, received)
+	}
+}
+
+func TestStringObjDP(t *testing.T) {
+	objDp := &ObjectDP{
+		obj:   "cgrates.org",
+		cache: make(map[string]interface{}),
+	}
+	expected := `"cgrates.org"`
+	if received := objDp.String(); !reflect.DeepEqual(expected, received) {
+		t.Errorf("Expected %+v, received %+v", expected, received)
+	}
+}
+
+func TestFieldAsInterfaceObjDPSliceOfInt(t *testing.T) {
+	object := []string{"1"}
+	objDp := &ObjectDP{
+		obj:   []int{12, 13},
+		cache: make(map[string]interface{}),
+	}
+	expected := 13
+	if received, err := objDp.FieldAsInterface(object); err != nil {
+		t.Error(err)
+	} else if !reflect.DeepEqual(received, expected) {
+		t.Errorf("Expected %+v, received %+v", expected, received)
+	}
+}
+
+func TestFieldAsInterfaceObjDPInvalidSyntax(t *testing.T) {
+	object := []string{"1]"}
+	objDp := &ObjectDP{
+		obj:   []int{12, 13},
+		cache: make(map[string]interface{}),
+	}
+	expected := "strconv.Atoi: parsing \"1]\": invalid syntax"
+	if _, err := objDp.FieldAsInterface(object); err == nil || err.Error() != expected {
+		t.Errorf("Expected %+v, received %+v", expected, err)
+	}
+}
+
+func TestFieldAsInterfaceObjDPInvalidFormat(t *testing.T) {
+	object := []string{"invalid[path"}
+	objDp := &ObjectDP{
+		obj:   []int{12, 13},
+		cache: make(map[string]interface{}),
+	}
+	expected := "filter rule <path> needs to end in ]"
+	if _, err := objDp.FieldAsInterface(object); err == nil || err.Error() != expected {
+		t.Errorf("Expected %+v, received %+v", expected, err)
+	}
+}
+
+func TestFieldAsInterfaceObjDPCache(t *testing.T) {
+	object := []string{"validPath"}
+	objDp := &ObjectDP{
+		cache: map[string]interface{}{
+			"validPath": "cgrates.org",
+		},
+	}
+	expected := "cgrates.org"
+	if rcv, err := objDp.FieldAsInterface(object); err != nil {
+		t.Error(err)
+	} else if !reflect.DeepEqual(expected, rcv) {
+		t.Errorf("Expected %+v, received %+v", expected, rcv)
+	}
+}
+
+func TestFieldAsInterfaceObjDPChangedObject(t *testing.T) {
+	object := []string{"0[1]"}
+	objDp := &ObjectDP{
+		obj:   []int{1},
+		cache: map[string]interface{}{},
+	}
+	expected := "unsupported field kind: int"
+	if _, err := objDp.FieldAsInterface(object); err == nil || err.Error() != expected {
+		t.Errorf("Expected %+v, received %+v", expected, err)
+	}
+}
+
+func TestFieldAsInterfaceObjDPValid1(t *testing.T) {
+	object := []string{"0[1]"}
+	objDp := &ObjectDP{
+		obj: []map[string]interface{}{
+			{
+				"1": 1,
+				"2": 2,
+			},
+		},
+		cache: map[string]interface{}{},
+	}
+	if rcv, err := objDp.FieldAsInterface(object); err != nil {
+		t.Error(err)
+	} else if rcv != 1 {
+		t.Errorf("Expected %+v, received %+v", 1, rcv)
+	}
+}
+
+func TestFieldAsStringObjDP(t *testing.T) {
+	object := []string{"0[1]"}
+	objDp := &ObjectDP{
+		obj: []map[string]interface{}{
+			{
+				"1": 1,
+				"2": 2,
+			},
+		},
+		cache: map[string]interface{}{},
+	}
+	if rcv, err := objDp.FieldAsString(object); err != nil {
+		t.Error(err)
+	} else if rcv != "1" {
+		t.Errorf("Expected %+v, received %+v", 1, rcv)
+	}
+}
+
+func TestFieldAsStringError(t *testing.T) {
+	object := []string{"0[1]"}
+	objDp := &ObjectDP{
+		obj:   []int{1},
+		cache: map[string]interface{}{},
+	}
+	expected := "unsupported field kind: int"
+	if _, err := objDp.FieldAsString(object); err == nil || err.Error() != expected {
+		t.Errorf("Expected %+v, received %+v", expected, err)
+	}
+}
+
+func TestFieldAsInterfaceObjDPMultiplePaths(t *testing.T) {
+	type aNewStruct struct {
+		Field1 int
+		Field2 int
+	}
+	objDp := &ObjectDP{
+		obj: []aNewStruct{
+			{
+				Field1: 1,
+				Field2: 2,
+			},
+		},
+		cache: map[string]interface{}{},
+	}
+	expected := "unsupported field kind: int"
+	if _, err := objDp.FieldAsString([]string{"0[Field1]", "a[Field2]"}); err == nil || err.Error() != expected {
+		t.Errorf("Expected %+v, received %+v", expected, err)
+	}
+}