DX: embed test app inside bundle

tests/app/config/packages/doctrine.yaml

@@ -0,0 +1,18 @@
+doctrine:
+    dbal:
+        url: '%env(resolve:DATABASE_URL)%'
+
+        # IMPORTANT: You MUST configure your server version,
+        # either here or in the DATABASE_URL env var (see .env file)
+        #server_version: '5.7'
+    orm:
+        auto_generate_proxy_classes: true
+        naming_strategy: doctrine.orm.naming_strategy.default
+        auto_mapping: true
+        #mappings:
+        #    App:
+        #        is_bundle: false
+        #        type: annotation
+        #        dir: '%kernel.project_dir%/src/Entity'
+        #        prefix: 'App\Entity'
+        #        alias: App