Principle of the test
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This test is a computer test. It validates that the misuse of control variables leads to an error message understandable by the user.

3 "errors" are tested for AFFE_MATERIAU/AFFE_VARC:


* The user assigns a field but the field components have an incorrect name.


* The user does not assign control variables to all items that need them.


* The user assigns a field but this field does not concern all the elements that need it.