Add more unit tests

backend/internal/jobqueue/models.go

@@ -16,6 +16,7 @@ type Queue struct {
 type Job struct {
 	Name   string
 	Action func() error // A function that should be executed when the job is running.
+	Done   chan bool    // A channel that should be closed when the job is done.
 }
 
 // AddJobs adds jobs to the queue and cancels channel.
@@ -44,11 +45,13 @@ func (q *Queue) AddJob(job Job) {
 }
 
 // Run performs job execution.
-func (j Job) Run() error {
+func (j *Job) Run() error {
 	err := j.Action()
 	if err != nil {
+		j.Done <- true
 		return err
 	}
 
+	j.Done <- true
 	return nil
 }