Vitaly added the comment: Thanks Terry, your assessment is correct. The maintainers appear to have drawn the wrong conclusion in #17866, which mislead me about the existing assertItemsEqual in 2.7, which appears to work correctly after all!
import unittest as u class Test(u.TestCase): def test_equal_count_of_same_elements(self): self.assertItemsEqual([1,2,3], [1,2,3]) def test_equal_count_of_different_elements(self): self.assertItemsEqual([1,2,3], [1,2,4]) def test_different_count(self): self.assertItemsEqual([1,2,3], [1,2,3,4]) u.main() $ python assert_items_equal_test.py --verbose test_different_count (__main__.Test) ... FAIL test_equal_count_of_different_elements (__main__.Test) ... FAIL test_equal_count_of_same_elements (__main__.Test) ... ok ====================================================================== FAIL: test_different_count (__main__.Test) ---------------------------------------------------------------------- Traceback (most recent call last): File "assert_items_equal_test.py", line 12, in test_different_count self.assertItemsEqual([1,2,3], [1,2,3,4]) AssertionError: Element counts were not equal: First has 0, Second has 1: 4 ====================================================================== FAIL: test_equal_count_of_different_elements (__main__.Test) ---------------------------------------------------------------------- Traceback (most recent call last): File "assert_items_equal_test.py", line 8, in test_equal_count_of_different_elements self.assertItemsEqual([1,2,3], [1,2,4]) AssertionError: Element counts were not equal: First has 1, Second has 0: 3 First has 0, Second has 1: 4 ---------------------------------------------------------------------- Ran 3 tests in 0.001s FAILED (failures=2) ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27060> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com