CaseAs does not work with JUnit 5

[janschaefer]

CaseAs workaround:

In Junit5 parameterized test call getScenario().getScenarioCaseModel().setDescription() to set the case description using whatever parameter values you need.

It would be great if these workarounds were not necessary and CaseAs worked properly with junit5 parameterized tests.

[janschaefer]

After a first analysis, I think fixing this depends on junit-team/junit5#944

CC: @mmadson

[janschaefer]

I implemented an ugly workaround that uses reflection to get the arguments out of the ExecutionContext. This is similar to the workaround that also exists for JUnit 4 that had the same problem.