diff --git a/lolafect/data_testing.py b/lolafect/data_testing.py
index 4e4f45e..1d0dc11 100644
--- a/lolafect/data_testing.py
+++ b/lolafect/data_testing.py
@@ -23,7 +23,7 @@ def run_data_test_on_mysql(
     """
     Validate a query and an expectation suite against a given MySQL server.
 
-    :param name: a name for the data test.
+    :param name: a unique name for the data test.
     :param mysql_credentials: credentials for the MySQL instance.
     :param query: the query to test against.
     :param expectations: the expectations on the dataset.
@@ -60,7 +60,7 @@ def create_in_memory_data_context(
     data_context = BaseDataContext(
         project_config=DataContextConfig(
             datasources={
-                "HARCODED": DatasourceConfig(  # f"{mysql_credentials['host']}:{mysql_credentials['port']}": DatasourceConfig(
+                f"{mysql_credentials['host']}:{mysql_credentials['port']}": DatasourceConfig(
                     class_name="Datasource",
                     execution_engine={
                         "class_name": "SqlAlchemyExecutionEngine",
@@ -131,7 +131,7 @@ def create_checkpoint(
         "validations": [
             {
                 "batch_request": {
-                    "datasource_name": "HARCODED",
+                    "datasource_name": f"{mysql_credentials['host']}:{mysql_credentials['port']}",
                     "data_connector_name": "default_runtime_data_connector_name",
                     "data_asset_name": f"{expectation_suite_name}_validation_query",
                     "runtime_parameters": {"query": query_for_checkpoint},