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-rw-r--r--lib/sqlalchemy/testing/plugin/config.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/sqlalchemy/testing/plugin/config.py b/lib/sqlalchemy/testing/plugin/config.py
index 785b69ace..946a856ad 100644
--- a/lib/sqlalchemy/testing/plugin/config.py
+++ b/lib/sqlalchemy/testing/plugin/config.py
@@ -70,7 +70,8 @@ def _engine_uri(options, file_config):
if db_url is None:
if db_label not in file_config.options('db'):
raise RuntimeError(
- "Unknown engine. Specify --dbs for known engines.")
+ "Unknown URI specifier '%s'. Specify --dbs for known uris."
+ % db_label)
db_url = file_config.get('db', db_label)
post_configure.append(_engine_uri)