[io][spec] add test on mu once divided by the monitor. Can contain some infinite values

7 jobs for master in 20 minutes and 13 seconds (queued for 6 seconds)
Name Stage Failure
failed
test:python3.7-stretch-pyqt5_pymca_larch Test
-----------------------------------------------------------------------
TOTAL 7891 3444 56%

=========================== short test summary info ============================
FAILED est/app/test/test_exec.py::TestWorkflowFromOwsFile::testLarchExecWorkflow
FAILED est/app/test/test_exec.py::TestWorkflowFromOwsFile::testPymcaExecWorkflow
=========== 2 failed, 60 passed, 1571 warnings in 178.72s (0:02:58) ============
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
test:python3.7-stretch-pyqt5_pymca Test
    title_latex="\chi(k).k^{k\_weight}",

-- Docs: https://docs.pytest.org/en/stable/warnings.html
=========================== short test summary info ============================
FAILED est/app/test/test_exec.py::TestWorkflowFromOwsFile::testLarchExecWorkflow
FAILED est/app/test/test_exec.py::TestWorkflowFromOwsFile::testPymcaExecWorkflow
===== 2 failed, 39 passed, 21 skipped, 1552 warnings in 142.24s (0:02:22) ======
Cleaning up file based variables
ERROR: Job failed: exit code 1