adding services_test.yaml when you install phpunit bridge

symfony/phpunit-bridge/3.3/config/services_test.yaml

@@ -0,0 +1,9 @@
+services:
+    _defaults:
+        public: true
+
+    # If you need to access services in a test, create an alias
+    # and then fetch that alias from the container. As a convention,
+    # aliases are prefixed with test. For example:
+    #
+    # test.App\Service\MyService: '@App\Service\MyService'

symfony/phpunit-bridge/3.3/manifest.json

@@ -1,6 +1,7 @@
 {
     "copy-from-recipe": {
         "bin/": "%BIN_DIR%/",
+        "config/": "%CONFIG_DIR%/",
         "phpunit.xml.dist": "phpunit.xml.dist",
         "tests/": "tests/"
     },