Add test for run-timestamp not provided as event arg

Author: ghukill

tests/test_format_input.py

@@ -125,6 +125,52 @@ def test_lambda_handler_with_next_step_transform_alma_files_present(run_timestam
     }
 
 
+def test_lambda_handler_with_next_step_transform_auto_generated_timestamp(s3_client):
+    s3_client.put_object(
+        Bucket="test-timdex-bucket",
+        Key="testsource/testsource-2022-01-02-daily-extracted-records-to-index.xml",
+        Body="I am a file",
+    )
+    event = {
+        "run-date": "2022-01-02T12:13:14Z",
+        "run-type": "daily",
+        "next-step": "transform",
+        "source": "testsource",
+        "run-id": "run-abc-123",
+        "verbose": "true",
+    }
+
+    with patch("lambdas.format_input.datetime") as mock_datetime:
+        mock_datetime.now.return_value.isoformat.return_value = (
+            "2025-06-18T12:34:56.789000"
+        )
+        mock_datetime.UTC = format_input.datetime.UTC
+
+        result = format_input.lambda_handler(event, {})
+
+    assert result == {
+        "run-date": "2022-01-02",
+        "run-type": "daily",
+        "source": "testsource",
+        "verbose": True,
+        "next-step": "load",
+        "transform": {
+            "files-to-transform": [
+                {
+                    "transform-command": [
+                        "--input-file=s3://test-timdex-bucket/testsource/"
+                        "testsource-2022-01-02-daily-extracted-records-to-index.xml",
+                        "--output-location=s3://test-timdex-bucket/dataset",
+                        "--source=testsource",
+                        "--run-id=run-abc-123",
+                        "--run-timestamp=2025-06-18T12:34:56.789000",
+                    ]
+                }
+            ]
+        },
+    }
+
+
 def test_lambda_handler_with_next_step_transform_no_files_present_alma():
     event = {
         "run-date": "2022-01-02",