authelia/docs/contributing/build-and-dev.md

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---
layout: default
title: Build & Dev
parent: Contributing
nav_order: 1
---
# Build & Dev
**Authelia** is written in Go and comes with a dedicated CLI called [authelia-scripts](./authelia-scripts.md) which is
available after running `source bootstrap.sh`. This CLI provides many useful tools to help you during development.
In order to build and contribute to **Authelia**, you need to make sure Go >= v1.16, Docker, docker-compose and
Node >= v12 are installed on your machine.
## Get started
**Authelia** is made of Go application serving the API and a [React](https://reactjs.org/) application for the portal.
In order to ease development, Authelia uses the concept of [suites] to run Authelia from source code so that your
patches are included. This is a kind of virtual environment running **Authelia** in a complete ecosystem
(LDAP, Redis, SQL server). Note that Authelia is hot-reloaded in the environment so that your patches are instantly
included.
The next command starts the suite called *Standalone*:
```console
$ authelia-scripts suites setup Standalone
```
Most of the suites are using docker-compose to bootstrap the environment. Therefore, you can check the logs of all
application by running the following command on the component you want to monitor.
```console
$ docker logs authelia_authelia-backend_1 -f
```
Then, edit the code and observe how **Authelia** is automatically reloaded.
### Unit tests
To run the unit tests, run:
```console
$ authelia-scripts unittest
```
### Integration tests
Integration tests are located under the `internal/suites` directory and are based on Selenium. A suite is a combination
of environment and tests. Executing a suite therefore means starting the environment, running the tests and tearing down
the environment. Each step can be run independently:
```console
# List the available suites
$ authelia-scripts suites list
Standalone
DuoPush
LDAP
Traefik
# Start the environment of Standalone suite.
$ authelia-scripts suites setup Standalone
# Run the tests related to the currently running suite.
$ authelia-scripts suites test
# Tear down the environment
$ authelia-scripts suites teardown Standalone
```
In order to test all suites (approx 30 minutes), you need to make sure there is no currently running suite and then you
should run:
```console
$ authelia-scripts suites test
```
Also, you don't need to start the suite before testing it. Given you're not running any suite, just use the following
command to test the *Standalone* suite.
```console
$ authelia-scripts suites test Standalone
```
The suite will be spawned, tests will be run and then the suite will be torn down automatically.
[suites]: ./suites.md