phpunit.xml.dist
<phpunit bootstrap="./phpunit.php">
<testsuites>
<testsuite>
<directory>./src/Elevator/Tests</directory>
</testsuite>
</testsuites>
<logging>
<log type="coverage-xml" target="build/coverage"/>
</logging>
<filter>
<whitelist addUncoveredFilesFromWhitelist="true">
<directory suffix=".php">src</directory>
<exclude>
<directory suffix=".php">src/Elevator/Tests</directory>
</exclude>
</whitelist>
</filter>
</phpunit>