Fix unit test warnings

Allow using more memory in unit tests

Author: ihor-sviziev

dev/tests/unit/phpunit.xml.dist

@@ -28,6 +28,7 @@
         </testsuite>
     </testsuites>
     <php>
+        <ini name="memory_limit" value="-1"/>
         <ini name="date.timezone" value="America/Los_Angeles"/>
         <ini name="xdebug.max_nesting_level" value="200"/>
     </php>