[m-rev.] for review: tests/invalid_submodules

[Julien Fischer]

On Wed, 14 Aug 2019, Zoltan Somogyi wrote:

> For review by anyone.
>
> Note that we already segregate hardcoded and valid tests with nested submodules,
> in the submodules and valid_seq directories respectively; this does the same
> for invalid tests.

That looks fine.

Julien.