# Running a TestUnit Test Run Configuration (Ruby) [edit]

This page gives an overview of how to modify the run configuration for a Test::Unit test run.

## Introduction

Every time a test is started from one of the described menu items, a Test::Unit run configuration is created. If the test is started a second time, this run configuration is used again. That allows to add parameters for the start, change the working directory or the interpreter to start with.

The following library paths are always added when the application is started (using the -I option of the ruby interpreter) and are not listed in the configuration dialog:

- The directory in which the started file resides
- The path of the project in which the started file resides
- The path of all dependent projects of the started file's project

## Related Topics

- Running a Test::Unit Test (Ruby)
- Starting from Ruby Resource View
- Starting from main menu (Ruby)
- Run configuration (ruby)

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