phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit
     backupStaticAttributes="false"

     cacheTokens="false"
     colors="true"
     convertErrorsToExceptions="true"
     convertNoticesToExceptions="true"
     convertWarningsToExceptions="true"
     forceCoversAnnotation="false"
     printerClass="PHPUnit\TextUI\ResultPrinter"

     processIsolation="false"
     stopOnError="false"
     stopOnFailure="false"
     stopOnIncomplete="false"
     stopOnSkipped="false"
     testSuiteLoaderClass="PHPUnit\Runner\StandardTestSuiteLoader"

     verbose="false"
    >

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

    <filter>
      <whitelist processUncoveredFilesFromWhitelist="true">
        <directory suffix=".php">src</directory>
        <file></file>
        <exclude>
          <directory suffix=".php">vendor</directory>
          <file>src/Tester.php</file>
        </exclude>
      </whitelist>
    </filter>

</phpunit>