Fix date format in cross-validation for auto-select (#1093)

Author: prasankh

ads/opctl/operator/lowcode/forecast/model_evaluator.py

@@ -100,6 +100,7 @@ def create_operator_config(self, operator_config, backtest, model, historical_da
         backtest_op_config_draft = operator_config.to_dict()
         backtest_spec = backtest_op_config_draft["spec"]
         backtest_spec["historical_data"]["url"] = historical_data_url
+        backtest_spec["datetime_column"]["format"] = None
         if backtest_spec["additional_data"]:
             backtest_spec["additional_data"]["url"] = additional_data_url
         backtest_spec["test_data"] = {}

tests/operators/data/timeseries/dataset6.csv

@@ -0,0 +1,9 @@
+Store,Date,Sales
+1,01-07-2022,328
+1,01-08-2022,369
+1,01-09-2022,415
+1,01-10-2022,277
+1,01-11-2022,248
+1,01-12-2022,251
+1,01-07-2023,329
+1,01-08-2023,446

tests/operators/forecast/test_errors.py

@@ -868,5 +868,30 @@ def test_what_if_analysis(operator_setup, model):
     ), f"Deployment info file not found at {deployment_metadata}"
 
 
+def test_auto_select(operator_setup):
+    DATASET_PREFIX = f"{os.path.dirname(os.path.abspath(__file__))}/../data/timeseries/"
+    tmpdirname = operator_setup
+    historical_test_path = f"{DATASET_PREFIX}/dataset6.csv"
+    model = "auto-select"
+    yaml_i, output_data_path = populate_yaml(
+        tmpdirname=tmpdirname,
+        historical_data_path=historical_test_path,
+        output_data_path=f"{tmpdirname}/{model}/results",
+    )
+    yaml_i["spec"].pop("additional_data")
+    yaml_i["spec"]["horizon"] = 2
+    yaml_i["spec"]["datetime_column"]["format"] = "%d-%m-%Y"
+    yaml_i["spec"]["model"] = model
+    yaml_i["spec"]["model_kwargs"] = {"model_list": ["prophet", "arima"]}
+
+    run_yaml(
+        tmpdirname=tmpdirname,
+        yaml_i=yaml_i,
+        output_data_path=output_data_path,
+        test_metrics_check=False,
+    )
+    report_path = f"{output_data_path}/report.html"
+    assert os.path.exists(report_path), f"Report file not found at {report_path}"
+
 if __name__ == "__main__":
     pass