On 2023-02-24 16:12:10 +1300, dn via Python-list wrote: > In some ways, providing this information seems appropriate. Curiously, this > does not even occur during an assert exception - despite the > value/relationship being the whole point of using the command! > > x = 1 > assert x == 2 > > AssertionError (and that's it)
Pytest is great there. If an assertion in a test case fails it analyzes
the expression to give you various levels of details:
======================================== test session starts
========================================
platform linux -- Python 3.10.6, pytest-6.2.5, py-1.10.0, pluggy-0.13.0
rootdir: /home/hjp/tmp/t
plugins: cov-3.0.0, anyio-3.6.1
collected 1 item
test_a.py F
[100%]
============================================= FAILURES
==============================================
______________________________________________ test_a
_______________________________________________
def test_a():
a = [1, 2, 3]
b = {"a": a, "b": 2}
> assert len(a) == len(b)
E AssertionError: assert 3 == 2
E + where 3 = len([1, 2, 3])
E + and 2 = len({'a': [1, 2, 3], 'b': 2})
test_a.py:7: AssertionError
====================================== short test summary info
======================================
FAILED test_a.py::test_a - AssertionError: assert 3 == 2
========================================= 1 failed in 0.09s
=========================================
hp
--
_ | Peter J. Holzer | Story must make more sense than reality.
|_|_) | |
| | | h...@hjp.at | -- Charles Stross, "Creative writing
__/ | http://www.hjp.at/ | challenge!"
signature.asc
Description: PGP signature
-- https://mail.python.org/mailman/listinfo/python-list
