Elixir collectors

ExUnit

ExUnit is a Elixir unit test library.

Before you start, make sure ExUnit runs with access to CI environment variables.

1. Create a test suite and copy the API token that it gives you.

2. Add buildkite_test_collector to your list of dependencies in mix.exs:

   def deps do
     [
       {:buildkite_test_collector, "~> 0.1.0", only: [:test]}
     ]
   end
   

3. Set up your API token:

   In your config/test.exs (or other environment configuration as appropriate) add the Buildkite Test Engine API token. We suggest that you retrieve the token from the environment, and configure your CI environment accordingly (for example using secrets).

   import Config
   
   config :buildkite_test_collector,
     api_key: System.get_env("BUILDKITE_ANALYTICS_TOKEN")
   

4. Add BuildkiteTestCollectorFormatter to your ExUnit configuration in test/test_helper.exs:

   ExUnit.configure formatters: [BuildkiteTestCollector.Formatter, ExUnit.CLIFormatter]
   ExUnit.start
   

5. Run your tests like normal:

   Note that we attempt to detect the presence of several common CI environments. However if this fails you can set the CI environment variable to any value and it will work.

   $ mix test
   
   ...
   
   Finished in 0.01 seconds (0.003s on load, 0.004s on tests)
   3 tests, 0 failures
   
   Randomized with seed 12345
   

6. Verify that it works. If all is well, you should see the test run analytics on the Buildkite Test Engine dashboard.