<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.8/phpunit.xsd"
         bootstrap="./tests/boot.php"
         colors="true"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         stopOnFailure="false">
    <listeners>
        <listener class="\Mockery\Adapter\Phpunit\TestListener"></listener>
    </listeners>
    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">./src</directory>
            <exclude>
                <directory>./build</directory>
                <directory>./tests</directory>
                <directory>./vendor</directory>
            </exclude>
        </whitelist>
    </filter>
    <logging>
        <log type="coverage-clover" target="./build/logs/coverage.xml"/>
    </logging>
    <testsuites>
        <testsuite name="U">
            <directory>./tests/src/Unit</directory>
        </testsuite>
    </testsuites>
</phpunit>

<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.8/phpunit.xsd"
         bootstrap="./tests/boot.php"
         colors="true"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         stopOnFailure="false">
    <listeners>
        <listener class="\Mockery\Adapter\Phpunit\TestListener"></listener>
    </listeners>
    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">./src</directory>
            <exclude>
                <directory>./build</directory>
                <directory>./tests</directory>
                <directory>./vendor</directory>
            </exclude>
        </whitelist>
    </filter>
    <logging>
        <log type="coverage-clover" target="./build/logs/coverage.xml"/>
    </logging>
    <testsuites>
        <testsuite name="U">
            <directory>./tests/src/Unit</directory>
        </testsuite>
        <testsuite name="F">
            <directory>./tests/src/Functional</directory>
        </testsuite>
    </testsuites>
</phpunit>

Add Functional test suite in config
Add Functional test suite in config
