Unit test fails under Python 3.13 #5035
Description
In Fedora we have RobotFramework tests running for upcoming Fedora 41 using Python 3.13.03 in a side tag.
While running the unit tests (version 7.0) I have a new failure in utils:
FAIL: test_remove_entries_with_lambda_and_multiple_entries
(test_error.TestRemoveRobotEntriesFromTraceback.test_remove_entries_with_lambda_and_multiple_entries)
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======================================================================
FAIL: test_remove_entries_with_lambda_and_multiple_entries (test_error.TestRemoveRobotEntriesFromTraceback.test_remove_entries_with_lambda_and_multiple_entries)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/builddir/build/BUILD/robotframework-7.0/utest/utils/test_error.py", line 107, in test_remove_entries_with_lambda_and_multiple_entries
self._verify_traceback(r'''
~~~~~~~~~~~~~~~~~~~~~~^^^^^
Traceback \(most recent call last\):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<3 lines>...
1/0
^^^
'''.strip(), assert_raises, AssertionError, raising_lambda)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/builddir/build/BUILD/robotframework-7.0/utest/utils/test_error.py", line 133, in _verify_traceback
raise AssertionError('\nExpected:\n%s\n\nActual:\n%s' % (expected, tb))
AssertionError:
Expected:
Traceback \(most recent call last\):
File ".*", line \d+, in <lambda.*>
raising_lambda = lambda: raises\(\)
File ".*", line \d+, in raises
1/0
Actual:
Traceback (most recent call last):
File "/builddir/build/BUILD/robotframework-7.0/utest/utils/test_error.py", line 106, in <lambda>
raising_lambda = lambda: raises()
~~~~~~^^
File "/builddir/build/BUILD/robotframework-7.0/utest/utils/test_error.py", line 105, in raises
1/0
~^~
ZeroDivisionError: division by zero
----------------------------------------------------------------------
Ran 635 tests in 0.577s
FAILED (failures=1)
Looking at the output and playing a bit around the solution to me looks like changing the test filter (line in test_error.py) from:
# Remove lines indicating error location with `^^^^` used by Python 3.11+.
tb = '\n'.join(line for line in tb.splitlines() if line.strip('^ '))
To:
# Remove lines indicating error location with `^^^^` used by Python 3.11+ and `~~~~^` variants in Python 3.13+.
tb = '\n'.join(line for line in tb.splitlines() if line.strip('^~ '))
Which filters also the error indicators with ~ that seem to be new.
This makes the test pass, I hope/believe without breaking in previous versions.
If the proposal makes sense I can of course open a MR!
Thanks!
F.