proper
ex_machina
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| proper | ex_machina | |
|---|---|---|
| 3 | 2 | |
| 878 | 1,871 | |
| 0.1% | 0.3% | |
| 3.1 | 6.8 | |
| 9 months ago | 3 months ago | |
| Erlang | Elixir | |
| GNU General Public License v3.0 only | MIT License |
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proper
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How programmers make sure that their software is correct
> There are generally two main categories of tests. There are unit tests [and] Integration tests
Later on there is a mention of fuzzing. However, there is something better called property tests. Where the on failure there is automatic "shrinking" of input complexity to find a minimally failing test scenario.
For Erlang and Elixir I recommend https://propertesting.com/ book and the PropEr test framework https://github.com/proper-testing/proper.
As an example, here is the use of an advanced feature called targeted property based testing: https://proper-testing.github.io/tutorials/PropEr_testing_wi... used to test a labyrinth.
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Laura Castro on Property-Based Testing in Elixir
[1] https://proper-testing.github.io/
ex_machina
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Test Data Libraries for Elixir
The factory library ExMachina created by Thoughbot uses function names and generates an atom used to call factories. For example:
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How to write test cases for databse related functions
The well known FactoryBot (FactoryGirl) from rails has a pretty good equivalent in Phoenix as ExMachina (https://github.com/thoughtbot/ex_machina) and does the job really well (thoughtbot is a pretty good and stable contributor too, so a nice Omakase plug-in!)
What are some alternatives?
StreamData - Data generation and property-based testing for Elixir. 🔮
faker - Faker is a pure Elixir library for generating fake data.
espec - Elixir Behaviour Driven Development
factory_girl_elixir - Minimal implementation of Ruby's factory_girl in Elixir.
meck - A mocking library for Erlang
blacksmith - Data generation framework for Elixir
Quixir - Property-based testing for Elixir
FakerElixir - [unmaintained] FakerElixir generates fake data for you.
espec_phoenix - ESpec for Phoenix web framework.
hound - Elixir library for writing integration tests and browser automation