Question 1

How to set up mix test.watch to run Credo with tests?

Accepted Answer

Add Credo as a dependency and configure the tasks list in config/dev.exs to include 'credo'. Tasks run in order, and arguments are passed through, ensuring integrated checks.

Question 2

mix test.watch vs mix test.interactive: which should I use?

Accepted Answer

mix test.watch is better for automatic, hands-off test runs on save, while mix test.interactive adds an interactive mode for selecting tests. Choose based on whether you prefer automation or control.

Question 3

Can mix test.watch be used in Phoenix applications?

Accepted Answer

Yes, it works with any Elixir project using Mix, including Phoenix. Just add it as a dev/test dependency and run mix test.watch, with options to exclude migrations or watch template files.

Question 4

How to exclude database migrations from triggering tests?

Accepted Answer

Use the exclude configuration with a regex pattern like ~r{priv/repo/migrations} in config/dev.exs. This prevents test runs when migration files are saved, reducing noise.

Question 5

Does mix test.watch support desktop notifications?

Accepted Answer

Not natively; you need to integrate a third-party package like ex_unit_notifier for desktop notifications. This adds extra setup compared to tools with built-in notification features.

Question 6

What happens if a configured task fails in mix test.watch?

Accepted Answer

Tasks run in order, and if any returns a non-zero exit code, progression stops. This ensures failures are caught early, but you might need to manually restart after fixes.

mix_test_watch

What is mix_test_watch?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions