status-react/doc/testing.md

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Local testing

Unit & integration tests

To run tests:

make test

Also test watcher can be launched. It will re-run the entire test suite when any file is modified

make test WATCH=true

Developers can also manually change the shadow-cljs option :ns-regex to control which namespaces the test runner should pick.

Testing with REPL

The most convenient way to develop and run test locally is using REPL:

  1. Run command make test-watch-for-repl.
  2. Once you see the message [repl] shadow-cljs - #3 ready! you can connect a REPL to the :test target from VS Code, Emacs, etc.
  3. In any test namespace, run cljs.test/run-tests or your preferred method to run tests in the current namespace.

You can run single test in REPL like this

(require 'cljs.test)
(cljs.test/test-var #'status-im.data-store.chats-test/normalize-chat-test)

Tests will use the bindings in modules/react-native-status/nodejs, if you make any changes to these you will need to restart the watcher.

Example in Emacs

In the video below, you can see two buffers side-by-side. On the left the source implementation, on the right the REPL buffer. Whenever a keybinding is pressed, tests in the current namespace instantly run. You can achieve this exact flow in VS Code, IntelliJ, Vim, etc.

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Example in terminal emulator

Here I'm showing a terminal-only experience using Tmux (left pane Emacs, right pane the output coming from running the make target).

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Component tests

To run tests:

   make component-test

Also test watcher can be launched. It will re-run the entire test suite when any file is modified

   make component-test-watch

Check component tests doc for more.