File: phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
         bootstrap="vendor/autoload.php"
         cacheResultFile=".phpunit.cache/test-results"
         executionOrder="depends,defects"
         forceCoversAnnotation="true"
         beStrictAboutCoversAnnotation="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         convertDeprecationsToExceptions="true"
         colors="true"
         failOnRisky="true"
         failOnWarning="true"
         verbose="true">

  <testsuites>
    <testsuite name="default">
      <directory>tests</directory>
    </testsuite>
  </testsuites>

  <coverage cacheDirectory=".phpunit.cache/code-coverage"
            processUncoveredFiles="true">
    <include>
      <directory suffix=".php">src</directory>
    </include>
  </coverage>

</phpunit>