New issue 2092: assertCountEqual gets wrong answer with list of tuples
https://bitbucket.org/pypy/pypy/issues/2092/assertcountequal-gets-wrong-answer-with
Ned Batchelder:
With PyPy 3.2.5 (pypy 2.4.0.final.0), this code passes the first
assertCountEqual, but fails on the second:
```
import unittest
d = [tuple(t) for t in [[1, 2], [3, -1], [2, 3], [-1, 1]]]
tc = unittest.TestCase()
tc.assertCountEqual(
[(1, 2), (3, -1), (2, 3), (-1, 1)],
[(-1, 1), (1, 2), (2, 3), (3, -1)]
)
tc.assertCountEqual(
d,
[(-1, 1), (1, 2), (2, 3), (3, -1)]
)
```
Output:
```
$ .tox/pypy3_24/bin/python foo.py
Traceback (most recent call last):
File "foo.py", line 12, in <module>
[(-1, 1), (1, 2), (2, 3), (3, -1)]
File "/usr/local/pythonz/pythons/PyPy3-2.4.0/lib-python/3/unittest/case.py",
line 1028, in assertCountEqual
self.fail(msg)
File "/usr/local/pythonz/pythons/PyPy3-2.4.0/lib-python/3/unittest/case.py",
line 494, in fail
raise self.failureException(msg)
AssertionError: Element counts were not equal:
First has 1, Second has 0: (3, -1)
First has 1, Second has 0: (-1, 1)
First has 0, Second has 1: (-1, 1)
First has 0, Second has 1: (3, -1)
```
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