# Codeception The Codeception task will run your full-stack tests. ***Composer*** ``` composer require --dev codeception/codeception ``` ***Config*** The task lives under the `codeception` namespace and has the following configurable parameters: ```yaml # grumphp.yml grumphp: tasks: codeception: config_file: ~ fail_fast: false suite: ~ test: ~ ``` **config_file** *Default: null* If your `codeception.yml` file is located in an exotic location, you can specify your custom config file location with this option. This option is set to `null` by default. This means that `codeception.yml` is automatically located if it exists in the current directory. **fail_fast** *Default: false* When this option is enabled, Codeception will stop at the first error. This means that it will not run your full test suite when an error occurs. **suite** *Default: null* When this option is specified it will only run tests for the given suite. If left `null` Codeception will run tests for your full test suite. **test** *Default: null* When this option is specified it will only run the given test. If left `null` Codeception will run all tests within the suite. This option can only be used in combination with a suite.