Add coverage tests on engine

engine/storage_postgres_test.go

@@ -0,0 +1,71 @@
+/*
+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 engine
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/cgrates/cgrates/utils"
+)
+
+func TestPostgressGetStorageType(t *testing.T) {
+	poS := &PostgresStorage{}
+	storageType := poS.GetStorageType()
+	if storageType != utils.MetaPostgres {
+		t.Errorf("expected %s, got %s", utils.MetaPostgres, storageType)
+	}
+}
+
+func TestExtraFieldsQueries(t *testing.T) {
+	poS := &PostgresStorage{}
+	field := "Subject"
+	value := "1001"
+	expectedExistsQuery := fmt.Sprintf(" extra_fields ?'%s'", field)
+	expectedValueQuery := fmt.Sprintf(" (extra_fields ->> '%s') = '%s'", field, value)
+	existsQuery := poS.extraFieldsExistsQry(field)
+	valueQuery := poS.extraFieldsValueQry(field, value)
+	if existsQuery != expectedExistsQuery {
+		t.Errorf("extraFieldsExistsQry: expected query to be %s, but got %s", expectedExistsQuery, existsQuery)
+	}
+	if valueQuery != expectedValueQuery {
+		t.Errorf("extraFieldsValueQry: expected query to be %s, but got %s", expectedValueQuery, valueQuery)
+	}
+}
+
+func TestPostgresNotExtraFieldsValueQry(t *testing.T) {
+	poS := &PostgresStorage{}
+	field := "Tor"
+	value := "voice"
+	expectedQuery := fmt.Sprintf(" NOT (extra_fields ?'%s' AND (extra_fields ->> '%s') = '%s')", field, field, value)
+	query := poS.notExtraFieldsValueQry(field, value)
+	if query != expectedQuery {
+		t.Errorf("expected query to be %s, but got %s", expectedQuery, query)
+	}
+}
+
+func TestPostgresNotExtraFieldsExistsQry(t *testing.T) {
+	poS := &PostgresStorage{}
+	field := "tor"
+	expectedQuery := fmt.Sprintf(" NOT extra_fields ?'%s'", field)
+	query := poS.notExtraFieldsExistsQry(field)
+	if query != expectedQuery {
+		t.Errorf("expected query to be %s, but got %s", expectedQuery, query)
+	}
+}