CMEPS can only run under create_test and NOT create_newcase (cmeps1.0.31)

[ekluzek]

A bug in CMEPS 1.0.31 from this commit 630c935 where TESTCASE is queried from the case. Since TESTCASE does NOT exist when create_test is NOT used (so under create_newcase) it aborts with an error something like this at preview_namelist time...

12-12 16:10 CIME.case.preview_namelists INFO     Create namelist for component drv
12-12 16:10 CIME.utils   INFO        Calling /glade/work/erik/ctsm_worktrees/quickfix/components/cmeps/cime_config/buildnml
attribute is NOT in the attributes dictionary:TESTCASE
attributes dictionary:{'cime_model': 'cesm', 'iyear': '2000', 'BGC_MODE': 'none', 'CPL_I2O_PER_CAT': False, 'DRV_THREADING': None, 'CPL_ALBAV': False, 'CPL_EPBAL': 'off', 'FLDS_WISO': False, 'BUDGETS': False, 'MACH': 'derecho', 'MPILIB': 'mpi-serial', 'OS': 'CNL', 'TESTCASE': None, 'glc_nec': 10, 'timer_level': 'pos', 'continue_run': '.false.', 'flux_epbal': 'off', 'mask_grid': 'null', 'hist_option': 'never', 'rest_option': 'ndays', 'stop_option': 'ndays', 'comp_ocn': 'socn', 'atm_grid': 'CLM_USRDAT', 'lnd_grid': 'CLM_USRDAT', 'ice_grid': 'null', 'ocn_grid': 'null', 'samegrid_atm_lnd': 'true', 'samegrid_atm_ocn': 'true', 'samegrid_atm_ice': 'true', 'samegrid_atm_wav': 'true', 'samegrid_lnd_rof': 'true', 'samegrid_wav_ocn': 'true', 'single_column': 'true', 'COMP_ATM': 'datm', 'COMP_ICE': 'sice', 'COMP_GLC': 'sglc', 'COMP_LND': 'clm', 'COMP_OCN': 'socn', 'COMP_ROF': 'srof', 'COMP_WAV': 'swav', 'CAMDEV': 'False', 'ROF_MODE': 'null', 'run_type': 'startup', 'wav_ice_coupling': False}
filename:/glade/work/erik/ctsm_worktrees/quickfix/components/cmeps/cime_config/namelist_definition_drv.xml
groups:{}
Traceback (most recent call last):
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/scripts/test_newcase/./preview_namelists", line 67, in <module>
    _main_func(__doc__)
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/scripts/test_newcase/./preview_namelists", line 63, in _main_func
    case.create_namelists(component=args.component)
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/case/preview_namelists.py", line 90, in create_namelists
    import_and_run_sub_or_cmd(
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/utils.py", line 668, in import_and_run_sub_or_cmd
    raise e1 from None
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/utils.py", line 664, in import_and_run_sub_or_cmd
    run_sub_or_cmd(
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/utils.py", line 709, in run_sub_or_cmd
    getattr(mod, subname)(*subargs)
  File "/glade/work/erik/ctsm_worktrees/quickfix/components/cmeps/cime_config/buildnml", line 693, in buildnml
    _create_drv_namelists(case, infile, confdir, nmlgen, files)
  File "/glade/work/erik/ctsm_worktrees/quickfix/components/cmeps/cime_config/buildnml", line 149, in _create_drv_namelists
    nmlgen.init_defaults(infile, config, skip_default_for_groups=["modelio"])
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/nmlgen.py", line 168, in init_defaults
    self.add_default(self._definition.get(entry, "id"))
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/nmlgen.py", line 706, in add_default
    default = self.get_default(name, allow_none=True)
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/nmlgen.py", line 343, in get_default
    default = self._definition.get_value_match(
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/XML/namelist_definition.py", line 217, in get_value_match
    value = super(NamelistDefinition, self).get_value_match(
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/XML/entry_id.py", line 71, in get_value_match
    value = self._get_value_match(
  File "/glade/work/erik/ctsm_worktrees/quickfix/cime/CIME/XML/entry_id.py", line 143, in _get_value_match
    if not re.search(
  File "/glade/u/apps/derecho/23.09/opt/._view/yazo4iwystz7p2hxu5ukzrw3xa24ksen/lib/python3.10/re.py", line 200, in search
    return _compile(pattern, flags).search(string)
TypeError: expected string or bytes-like object

NOTE: I added some extra printing to see what's going on in CIME to find the problem.

But, the lines in question is here in cime_config/namelist_definition_drv.xml

    <values>
       <value>.true.</value>
       <value rest_option='none'>.false.</value>
        <value rest_option='never'>.false.</value>
+     <value TESTCASE='ERC'>.false.</value>
+     <value TESTCASE='ERP'>.false.</value>
+     <value TESTCASE='ERI'>.false.</value>
    </values>
  </entry>

[ekluzek]

This was found as part of ESCOMP/CTSM#2757

[ekluzek]

One fix would be to move TESTCASE in cime from env_test.xml to env_run.xml or env_case.xml so that it could always be queried.