try some more tsting

internal/fswatcher/inotify/watcher.go

@@ -0,0 +1,30 @@
+package inotify
+
+import (
+	"fmt"
+	"io/ioutil"
+	"strconv"
+	"strings"
+)
+
+const maximumWatchersFile = "/proc/sys/fs/inotify/max_user_watches"
+
+type Watcher struct {
+	WD  int
+	Dir string
+}
+
+func GetLimit() (int, error) {
+	b, err := ioutil.ReadFile(maximumWatchersFile)
+	if err != nil {
+		return 0, fmt.Errorf("reading from %s: %v", maximumWatchersFile, err)
+	}
+
+	s := strings.TrimSpace(string(b))
+	m, err := strconv.Atoi(s)
+	if err != nil {
+		return 0, fmt.Errorf("converting to integer: %v", err)
+	}
+
+	return m, nil
+}