Added test for hidden_linear_function.py (#4492)
Added test for hidden_linear_function.py (#4492)

* Added tests for HiddenLinearFunction

* Added test for HiddenLinearFunction

* Added test for HiddenLinearFunction

* Modified test for hidden_linear_function.py

* Update test/python/circuit/test_library.py

Co-authored-by: Julien Gacon <2578673985e8ae3d22330d3daafe06433268eaa0@gmail.com>

* added tests for hidden_linear_function.py (#4350)

made the suggested changes

* added tests for hidden_linear_function.py (#4350)

fixed indexing error

* added tests for hidden_linear_function.py (#4350)

Co-authored-by: Julien Gacon <2578673985e8ae3d22330d3daafe06433268eaa0@gmail.com>
Co-authored-by: Julien Gacon <761ea7b8820f9c490794378c10a95bac00fe088d@googlemail.com>
QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py