"""
Functions for actions pertaining to history files.
"""
from CIME.XML.standard_module_setup import *
from CIME.test_status import TEST_NO_BASELINES_COMMENT, TEST_STATUS_FILENAME
from CIME.utils import get_current_commit, get_timestamp, get_model, safe_copy, SharedArea, parse_test_name
import logging, os, re, filecmp
logger = logging.getLogger(__name__)
BLESS_LOG_NAME = "bless_log"
# ------------------------------------------------------------------------
# Strings used in the comments generated by cprnc
# ------------------------------------------------------------------------
CPRNC_FIELDLISTS_DIFFER = "files differ only in their field lists"
# ------------------------------------------------------------------------
# Strings used in the comments generated by _compare_hists
# ------------------------------------------------------------------------
NO_COMPARE = "had no compare counterpart"
NO_ORIGINAL = "had no original counterpart"
FIELDLISTS_DIFFER = "had a different field list from"
DIFF_COMMENT = "did NOT match"
# COMPARISON_COMMENT_OPTIONS should include all of the above: these are any of the special
# comment strings that describe the reason for a comparison failure
COMPARISON_COMMENT_OPTIONS = set([NO_COMPARE,
NO_ORIGINAL,
FIELDLISTS_DIFFER,
DIFF_COMMENT])
# Comments that indicate a true baseline comparison failure
COMPARISON_FAILURE_COMMENT_OPTIONS = (COMPARISON_COMMENT_OPTIONS
- set([NO_COMPARE, FIELDLISTS_DIFFER]))
def _iter_model_file_substrs(case):
models = case.get_compset_components()
models.append('cpl')
for model in models:
yield model
[docs]def copy_histfiles(case, suffix):
"""Copy the most recent batch of hist files in a case, adding the given suffix.
This can allow you to temporarily "save" these files so they won't be blown
away if you re-run the case.
case - The case containing the files you want to save
suffix - The string suffix you want to add to saved files, this can be used to find them later.
"""
rundir = case.get_value("RUNDIR")
ref_case = case.get_value("RUN_REFCASE")
casename = case.get_value("CASE")
# Loop over models
archive = case.get_env("archive")
comments = "Copying hist files to suffix '{}'\n".format(suffix)
num_copied = 0
for model in _iter_model_file_substrs(case):
comments += " Copying hist files for model '{}'\n".format(model)
test_hists = archive.get_latest_hist_files(casename, model, rundir, ref_case=ref_case)
num_copied += len(test_hists)
for test_hist in test_hists:
test_hist = os.path.join(rundir,test_hist)
if not test_hist.endswith('.nc'):
logger.info("Will not compare non-netcdf file {}".format(test_hist))
continue
new_file = "{}.{}".format(test_hist, suffix)
if os.path.exists(new_file):
os.remove(new_file)
comments += " Copying '{}' to '{}'\n".format(test_hist, new_file)
# Need to copy rather than move in case there are some history files
# that will need to continue to be filled on the next phase; this
# can be the case for a restart run.
#
# (If it weren't for that possibility, a move/rename would be more
# robust here: The problem with a copy is that there can be
# confusion after the second run as to which files were created by
# the first run and which by the second. For example, if the second
# run fails to output any history files, the test will still pass,
# because the test system will think that run1's files were output
# by run2. But we live with that downside for the sake of the reason
# noted above.)
safe_copy(test_hist, new_file)
expect(num_copied > 0, "copy_histfiles failed: no hist files found in rundir '{}'".format(rundir))
return comments
[docs]def rename_all_hist_files(case, suffix):
"""Renaming all hist files in a case, adding the given suffix.
case - The case containing the files you want to save
suffix - The string suffix you want to add to saved files, this can be used to find them later.
"""
rundir = case.get_value("RUNDIR")
ref_case = case.get_value("RUN_REFCASE")
# Loop over models
archive = case.get_env("archive")
comments = "Renaming hist files by adding suffix '{}'\n".format(suffix)
num_renamed = 0
for model in _iter_model_file_substrs(case):
comments += " Renaming hist files for model '{}'\n".format(model)
if model == 'cpl':
mname = 'drv'
else:
mname = model
test_hists = archive.get_all_hist_files(mname, rundir, ref_case=ref_case)
num_renamed += len(test_hists)
for test_hist in test_hists:
test_hist = os.path.join(rundir, test_hist)
new_file = "{}.{}".format(test_hist, suffix)
if os.path.exists(new_file):
os.remove(new_file)
comments += " Renaming '{}' to '{}'\n".format(test_hist, new_file)
os.rename(test_hist, new_file)
expect(num_renamed > 0, "renaming failed: no hist files found in rundir '{}'".format(rundir))
return comments
def _hists_match(model, hists1, hists2, suffix1="", suffix2=""):
"""
return (num in set 1 but not 2 , num in set 2 but not 1, matchups)
>>> hists1 = ['FOO.G.cpl.h1.nc', 'FOO.G.cpl.h2.nc', 'FOO.G.cpl.h3.nc']
>>> hists2 = ['cpl.h2.nc', 'cpl.h3.nc', 'cpl.h4.nc']
>>> _hists_match('cpl', hists1, hists2)
(['FOO.G.cpl.h1.nc'], ['cpl.h4.nc'], [('FOO.G.cpl.h2.nc', 'cpl.h2.nc'), ('FOO.G.cpl.h3.nc', 'cpl.h3.nc')])
>>> hists1 = ['FOO.G.cpl.h1.nc.SUF1', 'FOO.G.cpl.h2.nc.SUF1', 'FOO.G.cpl.h3.nc.SUF1']
>>> hists2 = ['cpl.h2.nc.SUF2', 'cpl.h3.nc.SUF2', 'cpl.h4.nc.SUF2']
>>> _hists_match('cpl', hists1, hists2, 'SUF1', 'SUF2')
(['FOO.G.cpl.h1.nc.SUF1'], ['cpl.h4.nc.SUF2'], [('FOO.G.cpl.h2.nc.SUF1', 'cpl.h2.nc.SUF2'), ('FOO.G.cpl.h3.nc.SUF1', 'cpl.h3.nc.SUF2')])
>>> hists1 = ['cam.h0.1850-01-08-00000.nc']
>>> hists2 = ['cam_0001.h0.1850-01-08-00000.nc','cam_0002.h0.1850-01-08-00000.nc']
>>> _hists_match('cam', hists1, hists2, '', '')
([], [], [('cam.h0.1850-01-08-00000.nc', 'cam_0001.h0.1850-01-08-00000.nc'), ('cam.h0.1850-01-08-00000.nc', 'cam_0002.h0.1850-01-08-00000.nc')])
>>> hists1 = ['cam_0001.h0.1850-01-08-00000.nc.base','cam_0002.h0.1850-01-08-00000.nc.base']
>>> hists2 = ['cam_0001.h0.1850-01-08-00000.nc.rest','cam_0002.h0.1850-01-08-00000.nc.rest']
>>> _hists_match('cam', hists1, hists2, 'base', 'rest')
([], [], [('cam_0001.h0.1850-01-08-00000.nc.base', 'cam_0001.h0.1850-01-08-00000.nc.rest'), ('cam_0002.h0.1850-01-08-00000.nc.base', 'cam_0002.h0.1850-01-08-00000.nc.rest')])
"""
normalized1, normalized2 = [], []
multi_normalized1, multi_normalized2 = [], []
multiinst = False
for hists, suffix, normalized, multi_normalized in [(hists1, suffix1, normalized1, multi_normalized1), (hists2, suffix2, normalized2, multi_normalized2)]:
for hist in hists:
hist_basename = os.path.basename(hist)
offset = hist_basename.rfind(model)
expect(offset >= 0,"ERROR: cant find model name {} in {}".format(model, hist_basename))
normalized_name = os.path.basename(hist_basename[offset:])
if suffix != "":
expect(normalized_name.endswith(suffix), "How did '{}' not have suffix '{}'".format(hist, suffix))
normalized_name = normalized_name[:len(normalized_name) - len(suffix) - 1]
m = re.search("(.+)_[0-9]{4}(.+.nc)",normalized_name)
if m is not None:
multiinst = True
multi_normalized.append(m.group(1)+m.group(2))
normalized.append(normalized_name)
set_of_1_not_2 = set(normalized1) - set(normalized2)
set_of_2_not_1 = set(normalized2) - set(normalized1)
one_not_two = sorted([hists1[normalized1.index(item)] for item in set_of_1_not_2])
two_not_one = sorted([hists2[normalized2.index(item)] for item in set_of_2_not_1])
both = set(normalized1) & set(normalized2)
match_ups = sorted([ (hists1[normalized1.index(item)], hists2[normalized2.index(item)]) for item in both])
# Special case - comparing multiinstance to single instance files
if multi_normalized1 != multi_normalized2:
# in this case hists1 contains multiinstance hists2 does not
if set(multi_normalized1) == set(normalized2):
for idx, norm_hist1 in enumerate(multi_normalized1):
for idx1, hist2 in enumerate(hists2):
norm_hist2 = normalized2[idx1]
if norm_hist1 == norm_hist2:
match_ups.append((hists1[idx], hist2))
if hist2 in two_not_one:
two_not_one.remove(hist2)
if hists1[idx] in one_not_two:
one_not_two.remove(hists1[idx])
# in this case hists2 contains multiinstance hists1 does not
if set(multi_normalized2) == set(normalized1):
for idx, norm_hist2 in enumerate(multi_normalized2):
for idx1, hist1 in enumerate(hists1):
norm_hist1 = normalized1[idx1]
if norm_hist2 == norm_hist1:
match_ups.append((hist1, hists2[idx]))
if hist1 in one_not_two:
one_not_two.remove(hist1)
if hists2[idx] in two_not_one:
two_not_one.remove(hists2[idx])
if not multiinst:
expect(len(match_ups) + len(set_of_1_not_2) == len(hists1), "Programming error1")
expect(len(match_ups) + len(set_of_2_not_1) == len(hists2), "Programming error2")
return one_not_two, two_not_one, match_ups
def _compare_hists(case, from_dir1, from_dir2, suffix1="", suffix2="", outfile_suffix="",
ignore_fieldlist_diffs=False):
if from_dir1 == from_dir2:
expect(suffix1 != suffix2, "Comparing files to themselves?")
casename = case.get_value("CASE")
testcase = case.get_value("TESTCASE")
casedir = case.get_value("CASEROOT")
all_success = True
num_compared = 0
comments = "Comparing hists for case '{}' dir1='{}', suffix1='{}', dir2='{}' suffix2='{}'\n".format(casename, from_dir1, suffix1, from_dir2, suffix2)
multiinst_driver_compare = False
archive = case.get_env('archive')
ref_case = case.get_value("RUN_REFCASE")
for model in _iter_model_file_substrs(case):
if model == 'cpl' and suffix2 == 'multiinst':
multiinst_driver_compare = True
comments += " comparing model '{}'\n".format(model)
hists1 = archive.get_latest_hist_files(casename, model, from_dir1, suffix=suffix1, ref_case=ref_case)
hists2 = archive.get_latest_hist_files(casename, model, from_dir2, suffix=suffix2, ref_case=ref_case)
if len(hists1) == 0 and len(hists2) == 0:
comments += " no hist files found for model {}\n".format(model)
continue
one_not_two, two_not_one, match_ups = _hists_match(model, hists1, hists2, suffix1, suffix2)
for item in one_not_two:
if 'initial' in item:
continue
comments += " File '{}' {} in '{}' with suffix '{}'\n".format(item, NO_COMPARE, from_dir2, suffix2)
all_success = False
for item in two_not_one:
if 'initial' in item:
continue
comments += " File '{}' {} in '{}' with suffix '{}'\n".format(item, NO_ORIGINAL, from_dir1, suffix1)
all_success = False
num_compared += len(match_ups)
for hist1, hist2 in match_ups:
if not '.nc' in hist1:
logger.info("Ignoring non-netcdf file {}".format(hist1))
continue
success, cprnc_log_file, cprnc_comment = cprnc(model, os.path.join(from_dir1,hist1),
os.path.join(from_dir2,hist2), case, from_dir1,
multiinst_driver_compare=multiinst_driver_compare,
outfile_suffix=outfile_suffix,
ignore_fieldlist_diffs=ignore_fieldlist_diffs)
if success:
comments += " {} matched {}\n".format(hist1, hist2)
else:
if cprnc_comment == CPRNC_FIELDLISTS_DIFFER:
comments += " {} {} {}\n".format(hist1, FIELDLISTS_DIFFER, hist2)
else:
comments += " {} {} {}\n".format(hist1, DIFF_COMMENT, hist2)
comments += " cat " + cprnc_log_file + "\n"
expected_log_file = os.path.join(casedir, os.path.basename(cprnc_log_file))
if not (os.path.exists(expected_log_file) and filecmp.cmp(cprnc_log_file, expected_log_file)):
try:
safe_copy(cprnc_log_file, casedir)
except (OSError, IOError) as _:
logger.warning("Could not copy {} to {}".format(cprnc_log_file, casedir))
all_success = False
# PFS test may not have any history files to compare.
if num_compared == 0 and testcase != "PFS":
all_success = False
comments += "Did not compare any hist files! Missing baselines?\n"
comments += "PASS" if all_success else "FAIL"
return all_success, comments
[docs]def compare_test(case, suffix1, suffix2, ignore_fieldlist_diffs=False):
"""
Compares two sets of component history files in the testcase directory
case - The case containing the hist files to compare
suffix1 - The suffix that identifies the first batch of hist files
suffix1 - The suffix that identifies the second batch of hist files
ignore_fieldlist_diffs (bool): If True, then: If the two cases differ only in their
field lists (i.e., all shared fields are bit-for-bit, but one case has some
diagnostic fields that are missing from the other case), treat the two cases as
identical.
returns (SUCCESS, comments)
"""
rundir = case.get_value("RUNDIR")
return _compare_hists(case, rundir, rundir, suffix1, suffix2,
ignore_fieldlist_diffs=ignore_fieldlist_diffs)
[docs]def cprnc(model, file1, file2, case, rundir, multiinst_driver_compare=False, outfile_suffix="",
ignore_fieldlist_diffs=False, cprnc_exe=None):
"""
Run cprnc to compare two individual nc files
file1 - the full or relative path of the first file
file2 - the full or relative path of the second file
case - the case containing the files
rundir - the rundir for the case
outfile_suffix - if non-blank, then the output file name ends with this
suffix (with a '.' added before the given suffix).
Use None to avoid permissions issues in the case dir.
ignore_fieldlist_diffs (bool): If True, then: If the two cases differ only in their
field lists (i.e., all shared fields are bit-for-bit, but one case has some
diagnostic fields that are missing from the other case), treat the two cases as
identical.
returns (True if the files matched, log_name, comment)
where 'comment' is either an empty string or one of the module-level constants
beginning with CPRNC_ (e.g., CPRNC_FIELDLISTS_DIFFER)
"""
if not cprnc_exe:
cprnc_exe = case.get_value("CCSM_CPRNC")
basename = os.path.basename(file1)
multiinst_regex = re.compile(r'.*%s[^_]*(_[0-9]{4})[.]h.?[.][^.]+?[.]nc' % model)
mstr = ''
mstr1 = ''
mstr2 = ''
# If one is a multiinstance file but the other is not add an instance string
m1 = multiinst_regex.match(file1)
m2 = multiinst_regex.match(file2)
if m1 is not None:
mstr1 = m1.group(1)
if m2 is not None:
mstr2 = m2.group(1)
if mstr1 != mstr2:
mstr = mstr1+mstr2
output_filename = os.path.join(rundir, "{}{}.cprnc.out".format(basename, mstr))
if outfile_suffix:
output_filename += ".{}".format(outfile_suffix)
if outfile_suffix is None:
cpr_stat, out, _ = run_cmd("{} -m {} {}".format(cprnc_exe, file1, file2), combine_output=True)
else:
cpr_stat = run_cmd("{} -m {} {}".format(cprnc_exe, file1, file2), combine_output=True, arg_stdout=output_filename)[0]
with open(output_filename, "r") as fd:
out = fd.read()
comment = ''
if cpr_stat == 0:
# Successful exit from cprnc
if multiinst_driver_compare:
# In a multiinstance test the cpl hist file will have a different number of
# dimensions and so cprnc will indicate that the files seem to be DIFFERENT
# in this case we only want to check that the fields we are able to compare
# have no differences.
files_match = " 0 had non-zero differences" in out
else:
if "files seem to be IDENTICAL" in out:
files_match = True
elif "the two files seem to be DIFFERENT" in out:
files_match = False
elif "the two files DIFFER only in their field lists" in out:
if ignore_fieldlist_diffs:
files_match = True
else:
files_match = False
comment = CPRNC_FIELDLISTS_DIFFER
else:
expect(False, "Did not find an expected summary string in cprnc output")
else:
# If there is an error in cprnc, we do the safe thing of saying the comparison failed
files_match = False
return (files_match, output_filename, comment)
[docs]def compare_baseline(case, baseline_dir=None, outfile_suffix=""):
"""
compare the current test output to a baseline result
case - The case containing the hist files to be compared against baselines
baseline_dir - Optionally, specify a specific baseline dir, otherwise it will be computed from case config
outfile_suffix - if non-blank, then the cprnc output file name ends with
this suffix (with a '.' added before the given suffix). if None, no output file saved.
returns (SUCCESS, comments)
SUCCESS means all hist files matched their corresponding baseline
"""
rundir = case.get_value("RUNDIR")
if baseline_dir is None:
baselineroot = case.get_value("BASELINE_ROOT")
basecmp_dir = os.path.join(baselineroot, case.get_value("BASECMP_CASE"))
dirs_to_check = (baselineroot, basecmp_dir)
else:
basecmp_dir = baseline_dir
dirs_to_check = (basecmp_dir,)
for bdir in dirs_to_check:
if not os.path.isdir(bdir):
return False, "ERROR {} baseline directory '{}' does not exist".format(TEST_NO_BASELINES_COMMENT,bdir)
success, comments = _compare_hists(case, rundir, basecmp_dir, outfile_suffix=outfile_suffix)
if get_model() == "e3sm":
bless_log = os.path.join(basecmp_dir, BLESS_LOG_NAME)
if os.path.exists(bless_log):
lines = open(bless_log, "r").readlines()
if lines:
last_line = lines[-1]
comments += "\n Most recent bless: {}".format(last_line)
return success, comments
[docs]def generate_teststatus(testdir, baseline_dir):
"""
CESM stores it's TestStatus file in baselines. Do not let exceptions
escape from this function.
"""
if get_model() == "cesm":
try:
with SharedArea():
if not os.path.isdir(baseline_dir):
os.makedirs(baseline_dir)
safe_copy(os.path.join(testdir, TEST_STATUS_FILENAME), baseline_dir, preserve_meta=False)
except Exception as e:
logger.warning("Could not copy {} to baselines, {}".format(os.path.join(testdir, TEST_STATUS_FILENAME), str(e)))
def _generate_baseline_impl(case, baseline_dir=None, allow_baseline_overwrite=False):
"""
copy the current test output to baseline result
case - The case containing the hist files to be copied into baselines
baseline_dir - Optionally, specify a specific baseline dir, otherwise it will be computed from case config
allow_baseline_overwrite must be true to generate baselines to an existing directory.
returns (SUCCESS, comments)
"""
rundir = case.get_value("RUNDIR")
ref_case = case.get_value("RUN_REFCASE")
if baseline_dir is None:
baselineroot = case.get_value("BASELINE_ROOT")
basegen_dir = os.path.join(baselineroot, case.get_value("BASEGEN_CASE"))
else:
basegen_dir = baseline_dir
testcase = case.get_value("CASE")
archive = case.get_env('archive')
if not os.path.isdir(basegen_dir):
os.makedirs(basegen_dir)
if (os.path.isdir(os.path.join(basegen_dir,testcase)) and
not allow_baseline_overwrite):
expect(False, " Cowardly refusing to overwrite existing baseline directory")
comments = "Generating baselines into '{}'\n".format(basegen_dir)
num_gen = 0
for model in _iter_model_file_substrs(case):
comments += " generating for model '{}'\n".format(model)
hists = archive.get_latest_hist_files(testcase, model, rundir, ref_case=ref_case)
logger.debug("latest_files: {}".format(hists))
num_gen += len(hists)
for hist in hists:
offset = hist.rfind(model)
expect(offset >= 0,"ERROR: cant find model name {} in {}".format(model, hist))
baseline = os.path.join(basegen_dir, hist[offset:])
if os.path.exists(baseline):
os.remove(baseline)
safe_copy(os.path.join(rundir,hist), baseline, preserve_meta=False)
comments += " generating baseline '{}' from file {}\n".format(baseline, hist)
# copy latest cpl log to baseline
# drop the date so that the name is generic
if case.get_value("COMP_INTERFACE") == "nuopc":
cplname = "med"
else:
cplname = "cpl"
newestcpllogfile = case.get_latest_cpl_log(coupler_log_path=case.get_value("RUNDIR"), cplname=cplname)
if newestcpllogfile is None:
logger.warning("No {}.log file found in directory {}".format(cplname,case.get_value("RUNDIR")))
else:
safe_copy(newestcpllogfile, os.path.join(basegen_dir, "{}.log.gz".format(cplname)), preserve_meta=False)
testname = case.get_value("TESTCASE")
testopts = parse_test_name(case.get_value("CASEBASEID"))[1]
testopts = [] if testopts is None else testopts
expect(num_gen > 0 or (testname in ["PFS", "TSC"] or "B" in testopts),
"Could not generate any hist files for case '{}', something is seriously wrong".format(os.path.join(rundir, testcase)))
if get_model() == "e3sm":
bless_log = os.path.join(basegen_dir, BLESS_LOG_NAME)
with open(bless_log, "a") as fd:
fd.write("sha:{} date:{}\n".format(get_current_commit(repo=case.get_value("CIMEROOT")),
get_timestamp(timestamp_format="%Y-%m-%d_%H:%M:%S")))
return True, comments
[docs]def generate_baseline(case, baseline_dir=None, allow_baseline_overwrite=False):
with SharedArea():
return _generate_baseline_impl(case, baseline_dir=baseline_dir, allow_baseline_overwrite=allow_baseline_overwrite)
[docs]def get_ts_synopsis(comments):
r"""
Reduce case diff comments down to a single line synopsis so that we can put
something in the TestStatus file. It's expected that the comments provided
to this function came from compare_baseline, not compare_tests.
>>> get_ts_synopsis('')
''
>>> get_ts_synopsis('big error')
'big error'
>>> get_ts_synopsis('big error\n')
'big error'
>>> get_ts_synopsis('stuff\n File foo had a different field list from bar with suffix baz\nPass\n')
'FIELDLIST field lists differ (otherwise bit-for-bit)'
>>> get_ts_synopsis('stuff\n File foo had no compare counterpart in bar with suffix baz\nPass\n')
'ERROR BFAIL some baseline files were missing'
>>> get_ts_synopsis('stuff\n File foo had a different field list from bar with suffix baz\n File foo had no compare counterpart in bar with suffix baz\nPass\n')
'MULTIPLE ISSUES: field lists differ and some baseline files were missing'
>>> get_ts_synopsis('stuff\n File foo did NOT match bar with suffix baz\nPass\n')
'DIFF'
>>> get_ts_synopsis('stuff\n File foo did NOT match bar with suffix baz\n File foo had a different field list from bar with suffix baz\nPass\n')
'DIFF'
>>> get_ts_synopsis('stuff\n File foo did NOT match bar with suffix baz\n File foo had no compare counterpart in bar with suffix baz\nPass\n')
'DIFF'
>>> get_ts_synopsis('File foo had no compare counterpart in bar with suffix baz\n File foo had no original counterpart in bar with suffix baz\n')
'DIFF'
"""
if not comments:
return ""
elif "\n" not in comments.strip():
return comments.strip()
else:
has_fieldlist_differences = False
has_bfails = False
has_real_fails = False
for line in comments.splitlines():
if FIELDLISTS_DIFFER in line:
has_fieldlist_differences = True
if NO_COMPARE in line:
has_bfails = True
for comparison_failure_comment in COMPARISON_FAILURE_COMMENT_OPTIONS:
if comparison_failure_comment in line:
has_real_fails = True
if has_real_fails:
# If there are any real differences, we just report that: we assume that the
# user cares much more about those real differences than fieldlist or bfail
# issues, and we don't want to complicate the matter by trying to report all
# issues in this case.
return "DIFF"
else:
if has_fieldlist_differences and has_bfails:
# It's not clear which of these (if either) the user would care more
# about, so we report both. We deliberately avoid printing the keywords
# 'FIELDLIST' or TEST_NO_BASELINES_COMMENT (i.e., 'BFAIL'): if we printed
# those, then (e.g.) a 'grep -v FIELDLIST' (which the user might do if
# (s)he was expecting fieldlist differences) would also filter out this
# line, which we don't want.
return "MULTIPLE ISSUES: field lists differ and some baseline files were missing"
elif has_fieldlist_differences:
return "FIELDLIST field lists differ (otherwise bit-for-bit)"
elif has_bfails:
return "ERROR {} some baseline files were missing".format(TEST_NO_BASELINES_COMMENT)
else:
return ""