}
		if s := string(b); s != want {
			t.Errorf("for path %q got %q, want %q", path, s, want)
		}
		res.Body.Close()
	}
}

func TestFileServerZeroByte(t *testing.T) { run(t, testFileServerZeroByte) }
func testFileServerZeroByte(t *testing.T, mode testMode) {
	ts := newClientServerTest(t, mode, FileServer(Dir("."))).ts

	c, err := net.Dial("tcp", ts.Listener.Addr().String())
	if err != nil {