Astarte Export: Add Test for Exporting Data by device_id

[osmanhadzic]

Enhance the automated tests for Astarte tools by adding a test case to validate data export by device_id:

• Add two devices to the test database.
• Ensure that the export retrieves data for only one device based on the specified device_id.
• Verify the validity of the exported data.

Environment Setup

To run the test, ensure the following environment variables are set:

export CASSANDRA_DB_HOST="127.0.0.1"  
export CASSANDRA_DB_PORT=9042  
export CASSANDRA_NODES="localhost:9042" 

Additionally, ensure the Scylla database is running and port 9042 is exposed.

To Reproduce

1. Insert two devices into the test database.
2. Run the export functionality with a specific device_id.
3. Check the exported data to ensure it matches the device_id criteria.
4. Validate the integrity and accuracy of the exported data.

Tasks

• Add two devices to the test database.
• Implement a test case to export data for a single device_id.
• Validate that the export retrieves data for only the specified device_id.
• Verify the validity and accuracy of the exported data.
• Ensure that all existing tests pass after the changes.