User-story based integration tests. [WIP]

[YooSunYoung]

We need an integration test as a check-point of current implementation.

I would like to approach this based on a user-story.

I'll first make it work locally and then move them to an automated platform, i.e. gitlab runner, if needed.

User Story - Background Measurement

I wrote down some potential variations but for now only first of them are possible/feasible.

1. A user wants to measure the background.
   var 1-1. A user wants to measure the background before measuring a sample.
   var 1-2. A user wants to measure the background after measuring a sample.

2. The user wants to see the wavelength histogram of the monitor as we collect the background - may determine how long they want to collect background.
   var 2-1. See the last N seconds of the histogram.
   var 2-2. See the stack of i*N seconds of the resulst, updating every N seconds.

3. In the middle of the experiment.
   Var 3-1. The user pauses the beamlime in the middle.
   Var 3-2. The beam stopped X seconds in the middle.
   Var 3-3. The monitor data didn't flush within N seconds.

What to include

• Kafka broker integration
• Visualisation updates - dumping an image file.

What NOT to include

• User-NICOS interaction will be just simulated and produce relevant message to broker directly.

Test dataset

To simulate the background measurement, we can use loki.data.loki_tutorial_background_run_60248...?