ca1989
Unit test a command line interface of an escript
I am writing a very basic escript.
I have no idea how to test the arguments parsing though, I never did it in any language.
Would anyone have some hint or could point me to some docs?
Is mocking stdout and stderr an option?
Thank you.
First Post!
eksperimental
There are two kind of tests,
- smoke tests
- API tests
smoke tests could be expensive to run, but still useful to have a few, and if your application is not that big it is not that much of a big deal, but they are expesive because you need to start the app for every test.
Here are a few examples.
- ExDoc CLI test: ex_doc/test/ex_doc/cli_test.exs at main · elixir-lang/ex_doc · GitHub
- Mix CLI test: elixir/lib/mix/test/mix/cli_test.exs at main · elixir-lang/elixir · GitHub
- Elixir CLI test: elixir/lib/elixir/test/elixir/kernel/cli_test.exs at main · elixir-lang/elixir · GitHub
In Elixir and Mix you can find smoke tests if you look for the word “smoke”.
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