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# NUnit tests

This topic describes how to use NUnit tests in LoadRunner Enterprise.

In this topic:

## Prerequisites

- The same version of NUnit Framework must be installed on the load generator and on the machine used for test creation (the one installed as NuGet package). If the versions are different, errors might occur during the test run.

- Make sure that nunit.framework.dll resides in the same directory as the NUnit test.

- Create an NUnit test, and save it on your file system.

  Note:

  - The file path inside a script folder must not exceed 260 characters.

  - You need to convert the test to a VuGen script before uploading it to LoadRunner Enterprise. Use the VuGen Script Converter to convert it to a Unit Test for .NET LoadRunner script (described in Set up and run an NUnit test below).

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## Develop an NUnit test using Visual Studio

Develop the NUnit test in Visual Studio using the LoadRunner Add-in for Developers. This requires:

1. Installing the IDE for Dev add-in for your Microsoft Visual Studio version.

2. Adding the LoadRunner API functions to your test.

For details, see Develop a Unit Test Using Visual Studio (NUnit test) in the LoadRunner Professional Help Center.

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## Set up and run an NUnit test

This task describes how to use NUnit tests in LoadRunner Enterprise.

1. Convert tests based on NUnit to a VuGen script.

   For details, see Convert NUnit and JUnit based-tests to VuGen scripts.

2. Upload the converted VuGen script to LoadRunner Enterprise.

   For details, see Upload a script to LoadRunner Enterprise.

   After uploading the script to LoadRunner Enterprise, the script is added to the test management tree. You can view and edit most scripts directly from within the LoadRunner Enterprise user interface. For details, see Edit a script.

3. Create a test using the script.

   Assign as the load generator a machine that has NUnit and the relevant prerequisites installed on it.

   For details, see Design a test.

4. Run the test.

   For details, see Manage a performance test run.

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See also:

- Create test assets
- Design a test

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