t.Fatal("ReadResponse: ", err)
	}
	if res.StatusCode == 200 {
		t.Errorf("got status 200; want an error. Body is:\n%s", got.Bytes())
	}
}

func TestFileServerNamesEscape(t *testing.T) { run(t, testFileServerNamesEscape) }
func testFileServerNamesEscape(t *testing.T, mode testMode) {
	ts := newClientServerTest(t, mode, FileServer(Dir("testdata"))).ts
	for _, path := range []string{
		"/../testdata/file",