Add FBT for logs

[maciaszczykm]

Fixes #503 issue.

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[maciaszczykm]

@cheld Could you take a look?

[cheld]

For RC list page, the layouting is a very important feature. That's why we should test screen sizes in very detail. I don't see it for logs page. I would leave it to the general factor 'screen size'

[maciaszczykm]

I can move it to general factor, but I thought, that general factors should be the same for all sheets. Regarding screen size factor I think it's important due to toolbar and it's behaviour on smaller screens. I agree, that there are many cases for this factor, but this test should be quick anyways.

[cheld]

Think about the following factors:

• log size small, large (1 GB). I am not sure what happens. Does the browser blow up? Does the API server cut somehow?
• max. name length for pod and container (we had bugs with layout!)
• concurrency. e.g. delete the pod that is currently displayed (because of hpa scale-down)
• log lines, e.g. very long lines

That's all I could think off. Please investigate and add more factors.

[maciaszczykm]

Think about the following factors:

• log size small, large (1 GB). I am not sure what happens. Does the browser blow up? Does the API server cut somehow?
• max. name length for pod and container (we had bugs with layout!)
• concurrency. e.g. delete the pod that is currently displayed (because of hpa scale-down)
• log lines, e.g. very long lines

That's all I could think off. Please investigate and add more factors.

I've added logs size, pod and container name factors. Concurrency won't have any impact, because we do not refresh view asynchronously. Regarding log lines length, we do not have any impact on it, and I think when we will be testing logs with large size (1GB), then we'll see all kinds of logs line length.

PTAL

[cheld]

About concurrency:

Steps:

1. Open Logs => second browser tab opens
2. Switch browser tab
3. delete pod
4. switch to 2nd tab that shows the log
5. press refresh

=>

Internal Server Error (500)

pods "frontend-iei5o" not found

Do we consider this as a bug? Maybe ok for the moment. I am ok with skipping concurrency.

[cheld]

LGTM, I merge as I do not expect further comments.