chromium/third_party/rust/chromium_crates_io/vendor/small_ctor-0.1.2/scripts/check-example.py

import subprocess
sp = subprocess.Popen(['cargo', 'run', '--example', 'hello'], stdout=subprocess.PIPE)
stdout = sp.communicate()[0].decode("utf-8")
lines = stdout.splitlines()
assert lines == ["life before main", "main"], "got %s" % lines
print("Test Passed")