# Build **Authelia** is written in Typescript and built with Grunt. In order to build **Authelia**, you need to make sure Node v8 and NPM is installed on your machine. Then, run the following command install the node modules: npm install And, this command to build **Authelia** under dist/: ./node_modules/.bin/grunt build ## Details ### Build **Authelia** is made of two components: the client and the server. The client is written in Typescript and uses jQuery. It is built as part of the global `build` Grunt command. The server is written in Typescript. It is built as part of the global `build` Grunt command. ### Tests Grunt also handles the commands to run the tests. There are several type of tests for **Authelia**: unit tests for the server, unit tests for the client and integration tests for both. The unit tests are written with Mocha while integration tests are using Cucumber and Mocha. ### Unit tests To run the client unit tests, run: ./node_modules/.bin/grunt test-client To run the server unit tests, run: ./node_modules/.bin/grunt test-server ### Integration tests Integration tests are mainly based on Selenium so they need a complete environment to be set up. Start by making sure **Authelia** is built with: grunt build and the docker image is built with: ./scripts/example-commit/dc-example.sh build Then, start the environment with: ./scripts/example-commit/dc-example.sh up -d And run the tests with: ./node_modules/.bin/grunt test-int Note: the Cucumber tests are hard to maintain and will therefore be refactored to use Mocha instead.