source: Developing/Validating-Code.md

#### Validating Code

As part of the pull request process with GitHub we run some automated build tests to ensure that 
the code is error free, standards [compliant](http://docs.librenms.org/Developing/Code-Guidelines/)
and our test suite builds successfully.

Rather than submit a pull request and wait for the results, you can run these checks yourself to ensure 
a more seamless merge.

> All of these commands should be run from within the librenms directory and can be run as the librenms user 
unless otherwise noted.

Install composer (you can skip this if composer is already installed).

`curl -sS https://getcomposer.org/installer | php`

Composer will now be installed into /opt/librenms/composer.phar.

Now install the dependencies we require:

`composer install`

Once composer is installed you can now run the code validation script:

`./scripts/pre-commit.php`

If you see `Tests ok, submit away :)` then all is well. If you see other output then it should contain 
what you need to resolve the issues and re-test.

#### Git Hooks

Git has a hook system which you can use to trigger checks at various stages. Utilising the `pre-commit.php` 
you can make this part of your commit process. You can do this in two ways:

1. If you already make use of `.git/hooks/pre-commit` then you can add:

./scripts/pre-commit.php

to be excecuted when you run `git commit`.

2. You can symlink the `pre-commit.php` file so it's executed directly on a `git commit`:

`ln -s /opt/librenms/scripts/pre-commit.php /opt/librenms/.git/hooks/pre-commit`