diff --git a/Lib/unittest/case.py b/Lib/unittest/case.py index ff6b8b3cb96..08e8c1e9640 100644 --- a/Lib/unittest/case.py +++ b/Lib/unittest/case.py @@ -14,6 +14,10 @@ from .util import ( __unittest = True + +DIFF_OMITTED = ('\nDiff is %s characters long. ' + 'Set self.maxDiff to None to see it.') + class SkipTest(Exception): """ Raise this exception in a test to skip it. @@ -700,7 +704,7 @@ class TestCase(object): max_diff = self.maxDiff if max_diff is None or len(diff) <= max_diff: return message + diff - return message + return message + (DIFF_OMITTED % len(diff)) def assertListEqual(self, list1, list2, msg=None): """A list-specific equality assertion.