feat: test watcher

internal/watcher/watcher.go

@@ -13,6 +13,11 @@ type watcher struct {
 	deploy    pkgwatcher.DeployFunc
 }
 
+var (
+	errEventsClosedChan = errors.New("events is closed")
+	errErrorsClosedChan = errors.New("errors is closed")
+)
+
 func NewWatcher(deploy pkgwatcher.DeployFunc) *watcher {
 	wt, err := fsnotify.NewWatcher()
 	if err != nil {
@@ -36,8 +41,8 @@ func (w *watcher) Listen(binaryPath, scriptPath string, outputErr chan<- error)
 			select {
 			case event, ok := <-events:
 				if !ok {
-					log.Printf("!ok <-events \n")
-					outputErr <- errors.New("!ok <-events")
+					log.Println(errEventsClosedChan)
+					outputErr <- errEventsClosedChan
 					return
 				}
 				if !event.Has(fsnotify.Write) {
@@ -47,14 +52,17 @@ func (w *watcher) Listen(binaryPath, scriptPath string, outputErr chan<- error)
 
 				if err := w.deploy(binaryPath, scriptPath); err != nil {
 					log.Printf("deploy: %s\n", err)
+					outputErr <- err
 					continue
 				}
 			case err, ok := <-errChan:
 				if !ok {
-					log.Printf("!ok <-errors\n")
+					log.Println(errErrorsClosedChan)
+					outputErr <- errErrorsClosedChan
 					return
 				}
 				log.Printf("<-errors: %s\n", err)
+				outputErr <- err
 			}
 		}
 	}(w.fswatcher.Events, w.fswatcher.Errors, outputErr)