congrid was complaining if last dimension was 1

[GillesDuvert]

see #425 (comment)

[slayoo]

Kudos for including a new test case!

[alaingdl]

yes !

but I would like some/most tests in : spawn_is_dangerous/ and interactive_tests/ go back to testsuite/ because they are useful, and few are now broken (regression) and we forgot to test them.

For SPAWN, for me it is not a problem since it is usage in given contexts we wrote.
For "interactives" and graphics" we may change some outputs to Z or PNG but it is useful to run them

[GillesDuvert]

@acoulais of course the interactive and span_is_dangerous tests are badly needed. Just insure they work on builds without displays, or X11 and that spawn commands are those understood by the OS, windows in particular. See #1465 for a recent example.