diff --git a/ers/ers_test.go b/ers/ers_test.go
new file mode 100644
index 000000000..556558f3b
--- /dev/null
+++ b/ers/ers_test.go
@@ -0,0 +1,52 @@
+/*
+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 ers
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/cgrates/cgrates/config"
+	"github.com/cgrates/cgrates/engine"
+)
+
+func TestERsNewERService(t *testing.T) {
+	cfg, _ := config.NewDefaultCGRConfig()
+	fltrS := &engine.FilterS{}
+	expected := &ERService{cfg: cfg,
+		filterS:   fltrS,
+		rdrs:      make(map[string]EventReader),
+		rdrPaths:  make(map[string]string),
+		stopLsn:   make(map[string]chan struct{}),
+		rdrEvents: make(chan *erEvent),
+		rdrErr:    make(chan error),
+		exitChan:  nil,
+		sS:        nil}
+	rcv := NewERService(cfg, fltrS, nil, nil)
+
+	if !reflect.DeepEqual(expected.cfg, rcv.cfg) {
+		t.Errorf("Expecting: <%+v>, received: <%+v>", expected.cfg, rcv.cfg)
+	} else if !reflect.DeepEqual(expected.filterS, rcv.filterS) {
+		t.Errorf("Expecting: <%+v>, received: <%+v>", expected.filterS, rcv.filterS)
+	}
+}
+
+func TestERsAddReader(t *testing.T) {
+
+}
diff --git a/ers/readers_test.go b/ers/readers_test.go
new file mode 100644
index 000000000..404bf2653
--- /dev/null
+++ b/ers/readers_test.go
@@ -0,0 +1,88 @@
+/*
+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 ers
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/cgrates/cgrates/config"
+	"github.com/cgrates/cgrates/engine"
+	"github.com/cgrates/cgrates/utils"
+)
+
+func TestNewInvalidReader(t *testing.T) {
+
+	cfg, _ := config.NewDefaultCGRConfig()
+	reader := cfg.ERsCfg().Readers[0]
+	reader.Type = "Invalid"
+	reader.ID = "InvaidReader"
+	cfg.ERsCfg().Readers = append(cfg.ERsCfg().Readers, reader)
+	if len(cfg.ERsCfg().Readers) != 2 {
+		t.Errorf("Expecting: <2>, received: <%+v>", len(cfg.ERsCfg().Readers))
+	}
+	if _, err := NewEventReader(cfg, 1, nil, nil, &engine.FilterS{}, nil); err == nil || err.Error() != "unsupported reader type: <Invalid>" {
+		t.Errorf("Expecting: <unsupported reader type: <Invalid>>, received: <%+v>", err)
+	}
+}
+
+func TestNewCsvReader(t *testing.T) {
+
+	cfg, _ := config.NewDefaultCGRConfig()
+	fltr := &engine.FilterS{}
+	reader := cfg.ERsCfg().Readers[0]
+	reader.Type = utils.MetaFileCSV
+	reader.ID = "file_reader"
+	cfg.ERsCfg().Readers = append(cfg.ERsCfg().Readers, reader)
+	if len(cfg.ERsCfg().Readers) != 2 {
+		t.Errorf("Expecting: <2>, received: <%+v>", len(cfg.ERsCfg().Readers))
+	}
+	expected, err := NewCSVFileER(cfg, 1, nil, nil, fltr, nil)
+	if err != nil {
+		t.Errorf("Expecting: <nil>, received: <%+v>", err)
+	}
+	if rcv, err := NewEventReader(cfg, 1, nil, nil, fltr, nil); err != nil {
+		t.Errorf("Expecting: <nil>, received: <%+v>", err)
+	} else if !reflect.DeepEqual(expected, rcv) {
+
+		t.Errorf("Expecting: <%+v>, received: <%+v>", expected, rcv)
+	}
+}
+
+func TestNewKafkaReader(t *testing.T) {
+
+	cfg, _ := config.NewDefaultCGRConfig()
+	fltr := &engine.FilterS{}
+	reader := cfg.ERsCfg().Readers[0]
+	reader.Type = utils.MetaKafkajsonMap
+	reader.ID = "file_reader"
+	cfg.ERsCfg().Readers = append(cfg.ERsCfg().Readers, reader)
+	if len(cfg.ERsCfg().Readers) != 2 {
+		t.Errorf("Expecting: <2>, received: <%+v>", len(cfg.ERsCfg().Readers))
+	}
+	expected, err := NewKafkaER(cfg, 1, nil, nil, fltr, nil)
+	if err != nil {
+		t.Errorf("Expecting: <nil>, received: <%+v>", err)
+	}
+	if rcv, err := NewEventReader(cfg, 1, nil, nil, fltr, nil); err != nil {
+		t.Errorf("Expecting: <nil>, received: <%+v>", err)
+	} else if !reflect.DeepEqual(expected, rcv) {
+		t.Errorf("Expecting: <%+v>, received: <%+v>", expected, rcv)
+	}
+}