Test pr 387

src/snowflake/sqlalchemy/snowdialect.py

@@ -206,7 +206,7 @@ def create_connect_args(self, url):
                 raise sa_exc.ArgumentError(
                     f"Invalid name space is specified: {opts['database']}"
                 )
-        if ".snowflakecomputing.com" not in opts["host"] and not opts.get("port"):
+        if "host" in opts and ".snowflakecomputing.com" not in opts["host"] and not opts.get("port"):
             opts["account"] = opts["host"]
             if "." in opts["account"]:
                 # remove region subdomain

tests/test_core.py

@@ -184,6 +184,17 @@ def test_connect_args(verify_app_name):
         engine.dispose()
 
 
+def test_create_dialect():
+    """
+    Tests getting only dialect object through create_engine
+    """
+    engine = create_engine("snowflake://")
+    try:
+        assert engine.dialect
+    finally:
+        engine.dispose()
+
+
 def test_simple_sql(engine_testaccount):
     """
     Simple SQL by SQLAlchemy