phpunit.xml

<phpunit
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/6.3/phpunit.xsd"
  backupGlobals="true"
  cacheResult="true"
  backupStaticAttributes="false"
  bootstrap="vendor/autoload.php"
  colors="true"
  stopOnError="true"
  stopOnFailure="true"
  stopOnIncomplete="true"
  stopOnSkipped="true"
  stopOnRisky="true"
  verbose="true"
  convertErrorsToExceptions="true"
  convertNoticesToExceptions="true"
  convertWarningsToExceptions="true"
>
  <testsuites>
    <testsuite name="all">
      <directory>tests/unit/</directory>
    </testsuite>

    <testsuite name="validation">
      <directory>tests/unit/Validation</directory>
    </testsuite>

    <testsuite name="sale">
      <directory>tests/unit/Cart</directory>
      <directory>tests/unit/FraudAnalysis</directory>
      <directory>tests/unit/Sale</directory>
    </testsuite>

    <testsuite name="chargeback">
      <directory>tests/unit/Chargeback</directory>
    </testsuite>

    <testsuite name="schedule">
      <directory>tests/unit/Schedule</directory>
    </testsuite>
  </testsuites>
</phpunit>