Laravel tests are failing after trying to get some data in the Laravel Nova

Hello everyone,

I have a problem with testing my main app. Here is a small code of my class in Nova

class Settings
{
    /**
     * Settings constructor.
     */
    public function __construct()
    {
        $this->registerFields();
    }

    private function registerFields(): void
    {
        NovaSettings::addSettingsFields([
            Text::make('Google API', 'google_api'),
            Select::make('Users')->options($this->getFreelancersOnly()) 
        ]);
    }

    /**
     * @return array
     */
    private function getFreelancersOnly(): array
    {
       // this code is working fine from the UI 
        return User::with('info')->whereHas('info', function ($query) {
            $query->where('freelancer', 1);
        })->get()->pluck('first_name', 'id')->toArray();
    }
}

And I have a lot of test classes (for example this one for testing)

class HelpersTest extends TestCase
{
    use WithFaker, RefreshDatabase;

    /**
     * @test
     */
    public function just_test_case(): void
    {
        self::assertTrue(true);
    }
}

The problem is that all tests are failing with the error General error: 1 no such table: users, but If I'm removing all content of getFreelancersOnly method everything is working fine. It looks like my Laravel test cases are loading Nova classes before my Seed class. How can I solve this problem? All my tests are failing now :(

Here is my phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" backupStaticAttributes="false" bootstrap="vendor/autoload.php" colors="true" convertErrorsToExceptions="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true" processIsolation="false" stopOnFailure="false" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
  <coverage processUncoveredFiles="true">
    <include>
      <directory suffix=".php">./app</directory>
    </include>
  </coverage>
  <testsuites>
    <testsuite name="Unit">
      <directory suffix="Test.php">./tests/Unit</directory>
    </testsuite>
    <testsuite name="Feature">
      <directory suffix="Test.php">./tests/Feature</directory>
    </testsuite>
  </testsuites>
  <php>
    <env name="APP_ENV" value="testing"/>
    <env name="BCRYPT_ROUNDS" value="4"/>
    <env name="CACHE_DRIVER" value="array"/>
    <env name="MAIL_DRIVER" value="array"/>
    <env name="QUEUE_CONNECTION" value="sync"/>
    <env name="SESSION_DRIVER" value="array"/>
    <env name="DB_CONNECTION" value="testing"/>
  </php>
</phpunit>