Add a diff report to the failure message issued for assertRaisesWithLiteralMatch().
PiperOrigin-RevId: 485674181
diff --git a/absl/testing/absltest.py b/absl/testing/absltest.py
index 45b3a57..09d6304 100644
--- a/absl/testing/absltest.py
+++ b/absl/testing/absltest.py
@@ -1429,11 +1429,22 @@
"""
def Check(err):
actual_exception_message = str(err)
- self.assertTrue(expected_exception_message == actual_exception_message,
- 'Exception message does not match.\n'
- 'Expected: %r\n'
- 'Actual: %r' % (expected_exception_message,
- actual_exception_message))
+ self.assertEqual(
+ expected_exception_message,
+ actual_exception_message,
+ 'Exception message does not match.\n'
+ 'Expected: %r\n'
+ 'Actual: %r\n'
+ 'Diff: %r\n'
+ % (
+ expected_exception_message,
+ actual_exception_message,
+ difflib.context_diff(
+ (expected_exception_message,),
+ (actual_exception_message,),
+ ),
+ ),
+ )
context = self._AssertRaisesContext(expected_exception, self, Check)
if callable_obj is None:
@@ -1452,6 +1463,7 @@
'The quick brown fox jumped over the lazy dog'.
msg: Optional message to report on failure.
"""
+ # TODO(dlroxe): There is no longer a 'unicode' type.
if isinstance(strings, (bytes, unicode if str is bytes else str)):
strings = (strings,)
