The package comes with a bunch of unit tests. In order to run them, you will have to modify a couple of things in your root Laravel files.
First off, you must create a second MySQL database that should only be used for testing. Then add this line to your phpunit.xml file:
<env name="DB_DATABASE" value="testing_db_name"/>
Use the same credentials as the database in your .env file.
Next, add the following to autoload-dev psr-4 in your composer.json file:
"Kjjdion\\LaravelAdminPanel\\Tests\\": "vendor/kjjdion/laravel-admin-panel/tests/"
Then run composer update.
Now you can run all of the tests for the package by pointing directly to the package folder:
vendor\bin\phpunit vendor\kjjdion\laravel-admin-panel
If you think the package could use more unit tests, feel free to submit a pull request.