CLI tests

[lucaswerkmeister]

We desperately need tests for the CLI – how file redirection and output works. Probably not as ceylon.test tests though, I think this would be simpler to test using some (shell) scripts.

[lucaswerkmeister]

Basically, the steps for each test are:

1. create file structure
2. run CLI formatter
3. compare file structure to expected file structure

[lucaswerkmeister]

And the easiest way to do that might be to have one folder per test, and inside that:

• command file, contains the ceylon format command that’s run in that folder
• input folders, referred to by command
• result-expected folder – contains the expected structure

and the test is simply to run command in the folder and then compare the trees of result-expected and result-actual (where result-actual is what the formatter produced).