def _finddifference(self, casedirpath):
# Get the full output and reference paths
outpath = os.path.join(casedirpath, "out")
refpath = os.path.join(casedirpath, "ref")
# Check for the presence of the reference directory
if not os.path.isdir(refpath): return "Test case has no reference directory"
# Initialize lists to contain the extra files, missing files and differing files
extra = []
missing = []
differ = []
# Verify list of filenames
if len(filter(lambda fn: os.path.isdir(fn), os.listdir(outpath))) > 0: return "Output contains a directory"
dircomp = filecmp.dircmp(outpath, refpath, ignore=['.DS_Store'])
# Create a list of files that were not present in the reference directory
for file in dircomp.left_only: extra.append(file)
# Create a list of files that are missing from the output directory
for file in dircomp.right_only: missing.append(file)
# Compare files, focusing on those that aren't trivially equal.
matches, mismatches, errors = filecmp.cmpfiles(outpath, refpath, dircomp.common, shallow=False)
for filename in mismatches + errors:
reffile = os.path.join(refpath, filename)
outfile = os.path.join(outpath, filename)
# For a soft comparison between files, check if both files are similar enough
if self._parallel:
if not similarfiles(reffile, outfile): differ.append(filename)
# In the other case, check if both files are equal (except for potential timestamps)
else:
if not equalfiles(reffile, outfile): differ.append(filename)
# Return the list of extra files, the list of missing files and the list of differing files
return extra, missing, differ
# -----------------------------------------------------------------
# This functions searches for directories within a certain parent directories that have a specific name
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