The mono-process monoscale directional passive scalar advection example should work on all proposed implementations in 1D, 2D and 3D:

• Implementation.PYTHON
• Implementation.OPENCL_CODEGEN

Concerned tests are:

1. hysop/hysop/operator/tests/test_transpose.py
2. hysop/hysop/operator/tests/test_directional_advection.py

The target example is located at hysop/examples/scalar_advection/scalar_advection.py

Those tests should be the only ones run to achieve a working upstream testing framework. Other tests may be reintroduced later.