adds tests for journaling sql operations

pkg/services/alerting/notifiers/base.go

@@ -73,15 +73,16 @@ func (n *NotifierBase) ShouldNotify(c *alerting.EvalContext) bool {
 		NotifierId: n.Id,
 	}
 
-	if err := bus.DispatchCtx(c.Ctx, cmd); err != nil {
+	err := bus.DispatchCtx(c.Ctx, cmd)
+	if err != nil {
 		n.log.Error("Could not determine last time alert notifier fired", "Alert name", c.Rule.Name, "Error", err)
 		return false
 	}
 
-	// this currently serves two purposes.
-	// 1. make sure failed notifications try again
-	// 2. make sure we send notifications if no previous exist
-	// this should be refactored //Carl Bergquist
+	if err == models.ErrJournalingNotFound {
+		return true
+	}
+
 	if !cmd.Result.Success {
 		return true
 	}