phpunit.xml
<?xml version="1.0" encoding="UTF-8"?>
<phpunit backupGlobals="false"
backupStaticAttributes="false"
bootstrap="vendor/autoload.php"
colors="true"
convertErrorsToExceptions="true"
convertNoticesToExceptions="true"
convertWarningsToExceptions="true"
processIsolation="false"
stopOnFailure="false"
syntaxCheck="false"
>
<testsuites>
<testsuite name="Package Test Suite">
<directory suffix=".php">./tests/</directory>
</testsuite>
</testsuites>
<filter>
<whitelist>
<file>src/Alert.php</file>
</whitelist>
</filter>
</phpunit>