Re: [BuildStream] Proposal: Add support for running tests in BuildStream

[Tristan Van Berkom <tristan vanberkom codethink co uk>]

Hi again...

On Tue, 2018-10-30 at 21:33 +0900, Tristan Van Berkom via BuildStream-
list wrote:
[...]
> I'd like to illustrate a couple of interesting properties here,
> starting with your graph above.
>
> Consider the build graph below as Chandan described it, and consider
> that lib-test.bst satisfies the "tested" condition of lib.bst.
>
> Similarly app-test.bst satisfies the "tested" condition of app.bst.
>
>                      [base.bst]
>                          |
>                          |
>                          v
>   [lib-test.bst] <-- [lib.bst]
>                          |
>                          |
>                          v
>                      [app.bst] --> [app-test.bst]
>                          |
>                          |
>                          v
>                    [app-pkg.bst]
>
>
> Add to this, that app-pkg.bst makes the following statement:
>
>   I require that all of my dependencies have the "tested" condition
>   satisfied
>
> Then the above dependency graph is transformed in the following way:

Eeek sorry that wrapped horribly, let me try that one more time:

                     [base.bst]
                         |
                         |
                         v
  [lib-test.bst] <-- [lib.bst]
         |               |
         |               |
         |               v
         |           [app.bst] --> [app-test.bst]
         |               |               |
         |               |               |
         |               v               |
         +--------> [app-pkg.bst] <------+

Let's hope this doesnt get wrapped in transfer this time...

Cheers,
    -Tristan