mix-test.watch
Automatically run your Elixir project's tests each time you save a file. Because TDD is awesome.
Add it to your dependencies:
# mix.exs (Elixir 1.4)def deps do [{:mix_test_watch, "~> 1.0", only: :dev, runtime: false}]end
# mix.exs (Elixir 1.3 and earlier)def deps do [{:mix_test_watch, "~> 1.0", only: :dev}]end
Run the mix task
mix test.watch
Start hacking :)
Through the mix config it is possible to run other mix tasks as well as the test task. For example, if I wished to run the Dogma code style linter after my tests I would do so like this.
# config/config.exsuse Mix.Configif Mix.env == :dev do config :mix_test_watch, tasks: [ "test", "dogma", ]end
Tasks are run in the order they appear in the list, and the progression will stop if any command returns a non-zero exit code.
All tasks are run with MIX_ENV
set to test
.
Any command line arguments passed to the test.watch
task will be passed through to the tasks being run. If I only want to run the tests from one file every time I save a file I could do so with this command:
mix test.watch test/file/to_test.exs
Note that if you have configured more than one task to be run these arguments will be passed to all the tasks run, not just the test command.
Elixir 1.3 introduced --stale
option that will run only those test files which reference modules that have changed since the last run. You can pass it to test.watch:
mix test.watch --stale
If you want mix test.watch to clear the console before each run, you can enable this option in your config/dev.exs as follows:
# config/config.exsuse Mix.Configif Mix.env == :dev do config :mix_test_watch, clear: trueend
To ignore changes from specific files or directories just add exclude:
regexp patterns to your config in mix.exs
:
# config/config.exsuse Mix.Configif Mix.env == :dev do config :mix_test_watch, exclude: [~r/db_migration/.*/, ~r/useless_.*.exs/]end
The default is exclude: [~r/.#/, ~r{priv/repo/migrations}]
.
On Linux you may need to install inotify-tools
.
You can enable desktop notifications with ex_unit_notifier.
mix test.watch Copyright © 2015-present Louis Pilfold Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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