Code review comment for lp:~canonical-platform-qa/ubuntu-system-tests/snap-channel-support

> 1. Why is beta the default channel? Once a "snap" silo is ready for QA, will
> the snap in question be automatically available in the beta channel?

This change was requested due to the poor state of snap testing, so we could use more stable versions, rather than always taking the latest development version from edge which might not be fit for testing.

This doesn't take into account silos, I'm not sure how that process works for snaps. It would be possible to add a command option to force it to take a specific channel/revision for specific cases.

>
> 2. I'm not sure yet about the workflow with Bileto but if the app is not
> available in the beta channel, I would just make the setup to fail. Installing
> the snap from --edge could lead us to test the wrong version of the app.
> right?
>
> For example, let's say that there's a new silo for the calc snap v1.2, stable
> has 1.0 and edge has 1.1, if 1.2 is not uploaded to --beta, then we would end
> up executing the test cases against 1.1 and approving the 1.2 silo based on
> the 1.1 results
>
> Thoughts?

I'm also unsure how that process would work. But we could easily add some command options to force a specific channel and revision and fail if it can't find it.

These changes would also be related to the other app changes we're discussing about only having 1 version installed, so I think it would be better to look at adding these options again when we have that sorted.