The container registry was incorrectly being searched with a
variant_name == None, which always returned an empty printer-specific
materials list. As a result, the generic material settings were always
being loaded if there was no variant specifically indicated inside
the fdm_material file. The printer specific values were consistently
being ignored.
This commit fixes that by removing the search with a variant_name==None
which correctly returns the printer-specific materials list while
loading the materials from the variant nodes.
CURA-7087
The PrintInformation test wasn't cleaning up after itself correclty. This
left some stuff behind that the other tests were using. Since this is bad (as at that point
tests can influence other tests), i've fixed that
This should not happen, but we've seen some cases where it would cause a crash, usually
when a previous upgrade did something a bit weird (in this specific case; a printer
with an empty variant, whereas it should have a variant).
Since any change that the user will make will ensure that the variant is no longer empty (eg;
any selection of a variant will mean it's no longer empty) and that there is no way back,
it should be pretty safe to ignore the situation as it will resolve itself eventually
CURA-6992
This should not happen, but we've seen some cases where it would cause a crash, usually
when a previous upgrade did something a bit weird (in this specific case; a printer
with an empty variant, whereas it should have a variant).
Since any change that the user will make will ensure that the variant is no longer empty (eg;
any selection of a variant will mean it's no longer empty) and that there is no way back,
it should be pretty safe to ignore the situation as it will resolve itself eventually
CURA-6992
Conflicts:
cura/Machines/MaterialManager.py -> File was deleted in Master but I changed things for the lazy loading.
cura/Machines/Models/BaseMaterialsModel.py -> I clarified documentation on a line above a place where a timer was added in between.
Contributes to issue CURA-6793.
