Isolated tests

Use https://github.com/dmaicher/doctrine-test-bundle to have test isolation.

app/config/tests/parameters_test.sqlite.yml

@@ -5,5 +5,8 @@ parameters:
     test_database_name: ~
     test_database_user: ~
     test_database_password: ~
-    test_database_path: "%kernel.root_dir%/../data/db/wallabag_test.sqlite"
+    # Using an environnement variable in order to avoid the error "attempt to write a readonly database"
+    # when the schema is dropped then recreate
+    test_database_path: "%env(TEST_DATABASE_PATH)%"
+    env(TEST_DATABASE_PATH): "%kernel.root_dir%/../data/db/wallabag_test.sqlite"
     test_database_charset: utf8