【Laravel】テストコード実行時に .env の値を参照したい場合、キャッシュの扱い方によって実行結果が変わる

    public function testPrueba01()
    {
        $token = config('docurain.token');
        echo "===================================" . PHP_EOL;
        echo "token:{$token}" . PHP_EOL;
        echo "===================================" . PHP_EOL;
    }

return [
    'token' => env('DOCURAIN_TOKEN'),
];

DOCURAIN_TOKEN=FohVai3zei7dei8zainanuaphohqu5uz1Goh9aiy

    <php>
        <server name="APP_ENV" value="testing"/>
        <server name="BCRYPT_ROUNDS" value="4"/>
        <server name="CACHE_DRIVER" value="array"/>
        <server name="MAIL_MAILER" value="array"/>
        <server name="QUEUE_CONNECTION" value="sync"/>
        <server name="SESSION_DRIVER" value="array"/>
        <server name="TELESCOPE_ENABLED" value="false"/>
    </php>

php artisan config:clear | php artisan config:cache
php artisan test tests/Sample01Test.php

===================================
token:FohVai3zei7dei8zainanuaphohqu5uz1Goh9aiy
===================================

php artisan config:clear
php artisan test tests/Sample01Test.php

===================================
token:
===================================

    <php>
        <server name="DOCURAIN_TOKEN" value="FohVai3zei7dei8zainanuaphohqu5uz1Goh9aiy"/>
    </php>

php artisan test

php artisan test tests/Unit
php artisan test tests/Feature

    <testsuites>
        <testsuite name="Unit">
            <directory suffix="Test.php">./tests/Unit</directory>
        </testsuite>
        <testsuite name="Feature">
            <directory suffix="Test.php">./tests/Feature</directory>
        </testsuite>
    </testsuites>

/tests/Unit/*
/tests/Feature/*

/tests/Docurain/EstimateTestExtra.php