Running tests once

The test directory contains source code for unit tests, using a directory path matching the namespace they are testing from the src directory. -test is added to the end of the test namespaces. For example, if we have a source namespace of practicalli.hello-world, the tests would be in practicalli.hello-world-test.

ClojureScript - figwheel-main src and test trees

Use the :test alias with the :fig alias to run the Figwheel test runner

clojure -M:fig:test

This will open a browser and connect to its JavaScript REPL and run the tests.

Figwheel-main test runner - test host page

The results of the test run are printed to the terminal

Figwheel-main - test output in terminal

Running tests this way may not be as fast as using the continuous testing approach (covered next)

Test configuration

The :test alias uses the test.cljs.edn build configuration to start the Figwheel test runner and runs all the test namespaces under the test directory.

:test {:main-opts ["-m" "figwheel.main" "-co" "test.cljs.edn" "-m" practicalli.test-runner]}

The test.cljs.edn build configuration defines a separate URL to open the test host page, to avoid clashing with the URL to connect to the ClojureScript application itself.

  ;; alternative landing page for the tests to avoid launching the application
  :open-url "http://[[server-hostname]]:[[server-port]]/test.html"

  ;; launch tests in a headless environment - update path to chrome on operating system
  ;; :launch-js ["/Applications/Google Chrome" "--headless" "--disable-gpu" "--repl" :open-url]
{:main practicalli.test-runner}

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