I'm not sure if there's a style rule for this, but it seems very out of place to be the only empty line in the whole file.
@@ -7,7 +7,6 @@
<testsuite name="Unit">
<directory suffix="Test.php">./tests/Unit</directory>
</testsuite>
-
<testsuite name="Feature">
<directory suffix="Test.php">./tests/Feature</directory>