Toml-test is a higher-order program that tests other TOML decoders or encoders. The goal is to make it comprehensive. Tests are divided into two groups: invalid TOML data and valid TOML data. Decoders that reject invalid TOML data pass invalid TOML tests. Decoders that accept valid TOML data and output precisely what is expected pass valid tests. The output format is JSON, described below. Both decoders and encoders share valid tests, except an encoder accepts JSON and outputs TOML. The TOML representations are read with a blessed decoder and compared. Note though that encoders have their own set of invalid tests in the invalid-encoder directory. The JSON given to a TOML encoder is in the same format as the JSON that a TOML decoder should output.