diff --git a/ers/filexml_test.go b/ers/filexml_test.go
new file mode 100644
index 000000000..ac9ae8490
--- /dev/null
+++ b/ers/filexml_test.go
@@ -0,0 +1,47 @@
+/*
+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"
+)
+
+func TestERSNewXMLFileER(t *testing.T) {
+	cfg := config.NewDefaultCGRConfig()
+	expected := &XMLFileER{
+		cgrCfg:    cfg,
+		cfgIdx:    0,
+		fltrS:     nil,
+		rdrDir:    "/var/spool/cgrates/ers/in",
+		rdrEvents: nil,
+		rdrError:  nil,
+		rdrExit:   nil,
+		conReqs:   nil,
+	}
+	result, err := NewXMLFileER(cfg, 0, nil, nil, nil, nil)
+	if err != nil {
+		t.Errorf("\nExpected: <%+v>, \nreceived: <%+v>", nil, err)
+	}
+	expected.conReqs = result.(*XMLFileER).conReqs
+	if !reflect.DeepEqual(result, expected) {
+		t.Errorf("\nExpected: <%+v>, \nreceived: <%+v>", expected, result)
+	}
+}
diff --git a/ers/sql_test.go b/ers/sql_test.go
index 972a93b0a..3f2b8f600 100644
--- a/ers/sql_test.go
+++ b/ers/sql_test.go
@@ -200,3 +200,57 @@ func TestSQLReaderServeBadType(t *testing.T) {
 	}
 	logger.Default = tmp
 }
+
+func TestSQLPostCDRMySQLError(t *testing.T) {
+	tmp := logger.Default
+	logger.Default = logger.Default.LogMode(logger.Silent)
+	cfg := config.NewDefaultCGRConfig()
+	testSQLEventReader := &SQLEventReader{
+		cgrCfg:        cfg,
+		cfgIdx:        0,
+		fltrS:         nil,
+		connString:    "",
+		connType:      "",
+		tableName:     "testName",
+		expConnString: "",
+		expConnType:   utils.MySQL,
+		expTableName:  "",
+		rdrEvents:     nil,
+		rdrExit:       nil,
+		rdrErr:        nil,
+		cap:           nil,
+	}
+	err := testSQLEventReader.postCDR([]interface{}{})
+	expected := "Error 1045: Access denied for user ''@'localhost' (using password: NO)"
+	if err == nil {
+		t.Errorf("\nExpected: <%+v>, \nreceived: <%+v>", expected, err)
+	}
+	logger.Default = tmp
+}
+
+func TestSQLPostCDRPostgresError(t *testing.T) {
+	tmp := logger.Default
+	logger.Default = logger.Default.LogMode(logger.Silent)
+	cfg := config.NewDefaultCGRConfig()
+	testSQLEventReader := &SQLEventReader{
+		cgrCfg:        cfg,
+		cfgIdx:        0,
+		fltrS:         nil,
+		connString:    "",
+		connType:      "",
+		tableName:     "testName",
+		expConnString: "",
+		expConnType:   utils.Postgres,
+		expTableName:  "",
+		rdrEvents:     nil,
+		rdrExit:       nil,
+		rdrErr:        nil,
+		cap:           nil,
+	}
+	err := testSQLEventReader.postCDR([]interface{}{})
+	expected := "Error 1045: Access denied for user ''@'localhost' (using password: NO)"
+	if err == nil {
+		t.Errorf("\nExpected: <%+v>, \nreceived: <%+v>", expected, err)
+	}
+	logger.Default = tmp
+}