Current File : //lib/python3/dist-packages/xdist/report.py
from difflib import unified_diff
def report_collection_diff(from_collection, to_collection, from_id, to_id):
"""Report the collected test difference between two nodes.
:returns: detailed message describing the difference between the given
collections, or None if they are equal.
"""
if from_collection == to_collection:
return None
diff = unified_diff(from_collection, to_collection, fromfile=from_id, tofile=to_id)
error_message = (
"Different tests were collected between {from_id} and {to_id}. "
"The difference is:\n"
"{diff}"
).format(from_id=from_id, to_id=to_id, diff="\n".join(diff))
msg = "\n".join(x.rstrip() for x in error_message.split("\n"))
return msg
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