<phpunit bootstrap="bootstrap.php"
  verbose="true"
  convertErrorsToExceptions="true"
  convertWarningsToExceptions="true"
  colors="true">

  <testsuites>
    <testsuite name="SolrSearchTests">
      <directory>integration</directory>
      <directory>unit</directory>
    </testsuite>
  </testsuites>

</phpunit>

Add the travis version of the phpunit config
Add the travis version of the phpunit config
