timeseries: Fix functional tests in multimodal (#2383)

This PR updates the shared test utilities and documentation to support more reliable multimodal Helm automation, particularly around SeaweedFS S3 image-store verification timing.

Changes:

- Added dedicated wait-duration constants for multimodal SeaweedFS S3 validation steps (pod stabilization, Influx consistency, S3 response, populate, file validation).
- Updated the tests README to include a k3s-specific KUBECONFIG export note for Helm-related test runs.

Signed-off-by: rashmihe <rashmi.hegde@intel.com>

Author: rashmihe

manufacturing-ai-suite/industrial-edge-insights-time-series/tests/README.md

@@ -33,7 +33,11 @@
 
 3. For Helm-related test cases, run the following commands:
 
-   > **Note**: A Kubernetes cluster and Helm must be installed as prerequisites.
+   > **Note**: A Kubernetes cluster and Helm must be installed as prerequisites. If you are using k3s, ensure `KUBECONFIG` is exported before running the tests:
+   >
+   > ```sh
+   > export KUBECONFIG=/etc/rancher/k3s/k3s.yaml
+   > ```
 
    * Wind Turbine Anomaly Detection
 

manufacturing-ai-suite/industrial-edge-insights-time-series/tests/utils/constants.py

@@ -126,6 +126,13 @@
 MULTIMODAL_WAIT_AFTER_UDF_ACTIVATION = 25
 MULTIMODAL_WAIT_FOR_VISION_DATA = 60
 
+# Multimodal SeaweedFS S3 wait durations (in seconds)
+MULTIMODAL_SEAWEED_WAIT_POD_STABILIZATION = 30   # wait after essential pods verified
+MULTIMODAL_SEAWEED_WAIT_INFLUX_CONSISTENCY = 15  # wait for InfluxDB data consistency
+MULTIMODAL_SEAWEED_WAIT_S3_API_RESPONSE = 10     # wait for S3 API response processing
+MULTIMODAL_SEAWEED_WAIT_S3_POPULATE = 30         # wait for S3 storage to be fully populated
+MULTIMODAL_SEAWEED_WAIT_FILE_VALIDATION = 10     # wait before file content validation
+
 # Multimodal specific constants
 MULTIMODAL_TARGET_SUBPATH = "edge-ai-suites/manufacturing-ai-suite/industrial-edge-insights-multimodal"
 MULTIMODAL_APPLICATION_DIRECTORY = os.path.join(os.path.dirname(__file__), "../../../industrial-edge-insights-multimodal")