Add tests [TestListSenderNames] [TestListUserSenderNames]

scnserver/models/senderNames.go

@@ -0,0 +1,8 @@
+package models
+
+type SenderNameStatistics struct {
+	SenderName     string  `json:"name"            db:"name"`
+	LastTimestamp  SCNTime `json:"last_timestamp"  db:"ts_last"`
+	FirstTimestamp SCNTime `json:"first_timestamp" db:"ts_first"`
+	Count          int     `json:"count"           db:"count"`
+}