Update phpunit config + travis CI

Author: Yang

.travis.yml

@@ -13,9 +13,9 @@ matrix:
   include:
     # Minimum supported dependencies with the latest and oldest PHP version
     - php: 7.4
-      env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" SYMFONY_DEPRECATIONS_HELPER="weak_vendors"
+      env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest"
     - php: 7.2
-      env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" SYMFONY_DEPRECATIONS_HELPER="weak_vendors"
+      env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest"
       # Test the latest stable release
     - php: 7.2
     - php: 7.3

phpunit.xml.dist

@@ -8,5 +8,20 @@
          failOnRisky="true"
          failOnWarning="true"
 >
+    <testsuites>
+        <testsuite name="Project Test Suite">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist>
+            <directory>src</directory>
+            <exclude>
+                <directory>src/*Bundle/Resources</directory>
+                <directory>src/*/*Bundle/Resources</directory>
+                <directory>src/*/Bundle/*Bundle/Resources</directory>
+            </exclude>
+        </whitelist>
+    </filter>
 </phpunit>