[StructuralMechanics] Tests Requiring ConstitutiveLawsApp

[matekelemen]

The TotalLagrangianMixedVolumetricStrainElementBonetPatch test segfaults if ConstitutiveLawsApplication is not available. @rubenzorrilla can you please fix it and check the rest of the tests in StructuralMechanicsApplication as well?

[loumalouomega]

With the proper decorator the test can be skipped

[matekelemen]

With the proper decorator the test can be skipped

It's a C++ test. Besides, as far as I remember there have been a couple of similar bugs recently, which is why I'm asking Ruben to take a look at his tests.

[loumalouomega]

With the proper decorator the test can be skipped

It's a C++ test. Besides, as far as I remember there have been a couple of similar bugs recently, which is why I'm asking Ruben to take a look at his tests.

In that case can be skipped iwth a return void if the law is not existing

[rubenzorrilla]

I'll do it right away following @loumalouomega 's suggestion.

[philbucher]

C++ tests should not have application dependencies, this was decided long time ago
I recommend to use a python test instead