zulip/zerver/lib/mdiff.py

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import os
import subprocess
import logging
import difflib
def diff_strings(output: str, expected_output: str) -> str:
mdiff_path = "frontend_tests/zjsunit/mdiff.js"
if not os.path.isfile(mdiff_path): # nocoverage
logging.error("Cannot find mdiff for markdown diff rendering")
return None
command = ['node', mdiff_path, output, expected_output]
diff = subprocess.check_output(command).decode('utf-8')
return diff