Tests adapt to backend

Context

Curently working with adaptToBackend. Testing multiples cases, an adaptToBackend with a metaOp or trying a constantFolding after an adaptToBackend. These tests are frequently used with exports.

Status : Tests do not pass...

Modified files

• Test_AdaptToBackend.cpp add two new tests;

TODO

• Two cases both for AdaptToBackend with MetaOp and AdaptToBackend with ConstantFolding.
• Fix issues related to these two unit tests.