phpunit.xml

<?xml version="1.0"?>
<phpunit
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
        bootstrap="./vendor/autoload.php"
        colors="true"
        verbose="true"
>
  <coverage>
    <include>
      <directory suffix=".php">./lib</directory>
    </include>
    <report>
      <text outputFile="php://stdout" showOnlySummary="true"/>
    </report>
  </coverage>
  <testsuite name="Excel">
    <directory>./tests</directory>
  </testsuite>
</phpunit>