File: phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit bootstrap="vendor/autoload.php"
         backupGlobals="false"
         backupStaticAttributes="false"
         colors="true"
         verbose="true"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         processIsolation="true"
         stopOnFailure="true">
<testsuites>
    <testsuite name="Laravel VTU Test Suite">
        <directory>tests</directory>
    </testsuite>
</testsuites>
<filter>
    <whitelist>
        <directory suffix=".php">src/</directory>
    </whitelist>
</filter>
    <php>
        <env name="VOICE_AND_TEXT_TOKEN" value="123456789abcdeghi"/>
    </php>
</phpunit>