assert_equal(from_json(
"{\n" +
"    \"T1\" : \"Value With a lidus : \\\\\",\n" +
"    \"T4\" : \"Value with a d : \\f\",\n" +
"    \"T4\" : \"Value with a Nlewine : \\n\",\n" +
" auto x = 0
try {
  throw(x)
    