cmd/torrentfs/main_test.go | 28 ++++++++++++++++++++++++++++

diff --git a/cmd/torrentfs/main_test.go b/cmd/torrentfs/main_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..e4ea512ed575eeabf64890eab8594403c2a060fe
--- /dev/null
+++ b/cmd/torrentfs/main_test.go
@@ -0,0 +1,28 @@
+package main
+
+import (
+	"net"
+	"testing"
+)
+
+func TestTCPAddrString(t *testing.T) {
+	ta := &net.TCPAddr{
+		IP:   net.IPv4(127, 0, 0, 1),
+		Port: 3000,
+	}
+	s := ta.String()
+	l, err := net.Listen("tcp4", "localhost:3000")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer l.Close()
+	c, err := net.Dial("tcp", l.Addr().String())
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer c.Close()
+	ras := c.RemoteAddr().String()
+	if ras != s {
+		t.FailNow()
+	}
+}