Clean up & add unit tests

Developing a set of python unit tests to have a good coverage of all the DaVinci configuration scripts. As natural consequence, a clean up of the codes is also performed removing typos and simplifying the code when needed.

Addresses: https://gitlab.cern.ch/lhcb-dpa/project/-/issues/179, https://gitlab.cern.ch/lhcb-dpa/project/-/issues/180

DaVinciSys/tests/test_davinci_script.py

@@ -105,25 +105,3 @@ def test_create_options_templates():
 
     os.remove('test_inputdb_template.yaml')
     os.remove('test_jobopt_template.yaml')
-
-
-"""
-def run_simple_job():
-    ""
-    Check that DaVinci can run a minimal job with a simple configuration based only on PyConf.
-    ""
-    cmd = 'davinci create-options-template job -f test_jobopt_template.yaml'
-    result = subprocess.run(cmd, shell=True)
-
-    cmd = 'davinci --export test_run_simple_job.opts --dry-run run-mc -i Upgrade_Bd2KstarMuMu - -j test_jobopt_template.yaml'
-    result = subprocess.run(cmd, shell=True)
-
-    # Just be maniac - the command should work ;-)
-    assert result.returncode == 0
-    # Inspect the .opts file and check if the input files option is filled correctly.
-    with open("test_run_simple_job.opts") as f:
-        assert any('Gaudi__Examples__VoidConsumer' in line for line in f.readlines())
-
-    os.remove('test_jobopt_template.yaml')
-    
-"""