To ensure that your tests don't interfere with your production database, you can easily switch to a testing database for PHPUnit. Here's a step-by-step guide:

Step 1: Create a Testing Database

Copy and paste your database.sqlite file and rename it to testing.sqlite (or any other name you prefer).

Step 2: Open phpunit.xml

Locate and open the phpunit.xml file in your project.

Step 3: Configure Environment Variable

Add the following environment variable to phpunit.xml:

<env name="DB_DATABASE" value="database/testing.sqlite"/>

This tells PHPUnit to use the testing.sqlite database for testing purposes.

Step 4: Run Your Tests

Run your tests as you normally would. From now on, PHPUnit will use the testing.sqlite database, leaving your production database intact.

By following these simple steps, you can ensure that your tests don't interfere with your production database, and you can test your application with confidence!