Move input filename to config

[Glutexo]

An input filename is a configuration value, it does not have to be a module constant. This extraction allows to use this value in tests too.

With this change, I removed the @testfile_with_urls attribute from the tests. Its purpose was to expose an otherwise inaccessible value in the Onigumo module. With @input_file moved to the config, this is no longer necessary, as it’s accessible with Application.get_env(:onigumo, :input_file).

load_urls/1 takes the filename as an argument and did not have to use the global value even before this change.

Fixes #31.

[Glutexo]

Merged current elixir into this. Resolved conflicts.

I introduced a new change from the previous version. Instead of using a hardcoded "urls.txt" value in the tests, I load the value from the Application configuration. Even though in the tests it does not matter what the path actually is, the Application environment provide a sane value and prevents us from having hardcoded ones.

[Glutexo]

Merged current elixir into this. Resolved conflicts, extended the usage of the config variable to the new tests.

[Glutexo]

Merged current elixir into this. Resolved conflicts, extended the usage of the config variable to the new tests again.

Nice new piping has emerged.

Application.get_env(:onigumo, :input_path)
|> load_urls()
|> download(http, path)