documentation/content/en/dev/setup.md

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---
title: Setting up a dev environment
menu:
docs:
weight: 20
parent: dev
---
{{< hint style="danger" >}}
This page is under construction.
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### Setup <a id="setup"></a>
Run following commands in the project directory `bundle install`, `yarn install`.
In the development environment, Mastodon will use PostgreSQL as the currently signed-in Linux user using the `ident` method, which usually works out of the box. The one command you need to run is `rails db:setup` which will create the databases `mastodon_development` and `mastodon_test`, load the schema into them, and then create seed data defined in `db/seed.rb` in `mastodon_development`. The only seed data is an admin account with the credentials `admin@localhost:3000` / `mastodonadmin`.
> Please keep in mind, by default Mastodon will run on port 3000. If you configure a different port for it, the generated admin account will use that number.
### Running <a id="running"></a>
There are multiple processes that need to be run for the full set of Mastodons functionality, although they can be selectively omitted. To run all of them with just one command, you can install Foreman with `gem install foreman --no-document` and then use:
```text
foreman start
```
In the Mastodon directory. This will start processes defined in `Procfile.dev`, which will give you: A Rails server, a Webpack server, a streaming API server, and Sidekiq. Of course, you can run any of those things stand-alone depending on your needs.
### Testing <a id="testing"></a>
| Command | Description |
| :--- | :--- |
| `rspec` | Run the Ruby test suite |
| `yarn run test` | Run the JavaScript test suite |
| `rubocop` | Check the Ruby code for conformance with our code style |