Various test failures if PYTHONUSERBASE is not canonicalized

[jdemeyer]

BPO	33222
Nosy	@ned-deily, @jdemeyer, @nitishch, @akshaysharma096, @iritkatriel
PRs	bpo-33222: Add canonicalisation to paths in site test suite. #6434

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2018-04-04.14:00:04.403>
labels = ['easy', 'type-bug', '3.9', '3.10', '3.11', 'tests']
title = 'Various test failures if PYTHONUSERBASE is not canonicalized'
updated_at = <Date 2022-01-31.01:00:24.460>
user = 'https://github.com/jdemeyer'

bugs.python.org fields:

activity = <Date 2022-01-31.01:00:24.460>
actor = 'iritkatriel'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2018-04-04.14:00:04.403>
creator = 'jdemeyer'
dependencies = []
files = []
hgrepos = []
issue_num = 33222
keywords = ['patch', 'easy']
message_count = 8.0
messages = ['314931', '315088', '315135', '412182', '412184', '412185', '412186', '412187']
nosy_count = 5.0
nosy_names = ['ned.deily', 'jdemeyer', 'nitishch', 'akshaysharma096', 'iritkatriel']
pr_nums = ['6434']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue33222'
versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']

[jdemeyer]

Setting PYTHONUSERBASE=/tmp/x/.. causes the Python test suite to fail:

======================================================================
FAIL: test_user_similar (test.test_sysconfig.TestSysConfig)
----------------------------------------------------------------------

Traceback (most recent call last):
 File "/usr/local/src/sage-config/local/src/cpython/Lib/test/test_sysconfig.py", line 276, in test_user_similar
 self.assertEqual(user_path, global_path.replace(base, user, 1))
AssertionError: '/tmp/lib/python3.8' != '/tmp/x/../lib/python3.8'
- /tmp/lib/python3.8
+ /tmp/x/../lib/python3.8
? +++++

======================================================================
FAIL: test_get_path (test.test_site.HelperFunctionsTests)
----------------------------------------------------------------------

Traceback (most recent call last):
 File "/usr/local/src/sage-config/local/src/cpython/Lib/test/test_site.py", line 192, in test_get_path
 sysconfig.get_path('purelib', scheme))
AssertionError: '/tmp/x/../lib/python3.8/site-packages' != '/tmp/lib/python3.8/site-packages'
- /tmp/x/../lib/python3.8/site-packages
? 

---

+ /tmp/lib/python3.8/site-packages

======================================================================
FAIL: test_s_option (test.test_site.HelperFunctionsTests)
----------------------------------------------------------------------

Traceback (most recent call last):
 File "/usr/local/src/sage-config/local/src/cpython/Lib/test/test_site.py", line 199, in test_s_option
 self.assertIn(usersite, sys.path)
AssertionError: '/tmp/x/../lib/python3.8/site-packages' not found in ['/usr/local/src/sage-config/local/src/cpython', '/usr/local/src/sage-config/local/lib/python38.zip', '/usr/local/src/sage-config/local/src/cpython/Lib', '/usr/local/src/sage-config/local/src/cpython/build/lib.linux-x86_64-3.8', '/usr/local/src/sage-config/local/lib/python3.8/site-packages']

[ned-deily]

Would you care to provide a PR fix with a test?

[akshaysharma096]

What are the possible cases we can have here ?

[iritkatriel]

I tested on a map and I only got the failure in test_s_option, which seems right because that directory is indeed not in sys.path.

[ned-deily]

FWIW, I still see the same failures with 3.10.2 on a current macOS 12.2 system.

[iritkatriel]

I tested 3.11 (on a Mac 11.6).

[ned-deily]

I tested 3.11 (on a Mac 11.6).

It still fails for me on current main HEAD (on 12.2 FWIW):

$ ./configure --prefix=/tmp/p
$ make -j6
$ mkdir /tmp/x
$ export PYTHONUSERBASE=/tmp/x/..
$ ./python -m test -w test_site test_sysconfig
Raised RLIMIT_NOFILE: 256 -> 1024
0:00:00 load avg: 0.99 Run tests sequentially
0:00:00 load avg: 0.99 [1/2] test_site
test test_site failed -- multiple errors occurred; run in verbose mode for details
0:00:00 load avg: 0.99 [2/2/1] test_sysconfig -- test_site failed (2 failures)
test test_sysconfig failed -- Traceback (most recent call last):
 File "/Users/nad/Projects/PyDev/active/dev/3x/source/Lib/test/test_sysconfig.py", line 314, in test_user_similar
 self.assertEqual(user_path, expected)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '/tmp/lib/python3.11' != '/tmp/x/../lib/python3.11'
- /tmp/lib/python3.11
+ /tmp/x/../lib/python3.11
? +++++

test_sysconfig failed (1 failure)

== Tests result: FAILURE ==

2 tests failed:
test_site test_sysconfig
0:00:00 load avg: 0.99
0:00:00 load avg: 0.99 Re-running failed tests in verbose mode
0:00:00 load avg: 0.99 Re-running test_site in verbose mode (matching: test_get_path, test_s_option)
test_get_path (test.test_site.HelperFunctionsTests) ... FAIL
test_s_option (test.test_site.HelperFunctionsTests) ... FAIL

======================================================================
FAIL: test_get_path (test.test_site.HelperFunctionsTests)
----------------------------------------------------------------------

Traceback (most recent call last):
 File "/Users/nad/Projects/PyDev/active/dev/3x/source/Lib/test/test_site.py", line 209, in test_get_path
 self.assertEqual(site._get_path(site._getuserbase()),
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '/tmp/x/../lib/python/site-packages' != '/tmp/lib/python/site-packages'
- /tmp/x/../lib/python/site-packages
? 

---

+ /tmp/lib/python/site-packages

======================================================================
FAIL: test_s_option (test.test_site.HelperFunctionsTests)
----------------------------------------------------------------------

Traceback (most recent call last):
 File "/Users/nad/Projects/PyDev/active/dev/3x/source/Lib/test/test_site.py", line 218, in test_s_option
 self.assertIn(usersite, sys.path)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '/tmp/x/../lib/python3.11/site-packages' not found in ['/Users/nad/Projects/PyDev/active/dev/3x/source', '/tmp/p/lib/python311.zip', '/Users/nad/Projects/PyDev/active/dev/3x/source/Lib', '/Users/nad/Projects/PyDev/active/dev/3x/source/build/lib.macosx-12.2-x86_64-3.11', '/tmp/lib/python3.11/site-packages']

---

Ran 2 tests in 0.002s

FAILED (failures=2)
test test_site failed
0:00:00 load avg: 0.99 Re-running test_sysconfig in verbose mode (matching: test_user_similar)
test_user_similar (test.test_sysconfig.TestSysConfig) ... FAIL

======================================================================
FAIL: test_user_similar (test.test_sysconfig.TestSysConfig)
----------------------------------------------------------------------

Traceback (most recent call last):
 File "/Users/nad/Projects/PyDev/active/dev/3x/source/Lib/test/test_sysconfig.py", line 314, in test_user_similar
 self.assertEqual(user_path, expected)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '/tmp/lib/python3.11' != '/tmp/x/../lib/python3.11'
- /tmp/lib/python3.11
+ /tmp/x/../lib/python3.11
? +++++

---

Ran 1 test in 0.001s

FAILED (failures=1)
test test_sysconfig failed
2 tests failed again:
test_site test_sysconfig

== Tests result: FAILURE then FAILURE ==

2 tests failed:
test_site test_sysconfig

2 re-run tests:
test_site test_sysconfig

Total duration: 350 ms
Tests result: FAILURE then FAILURE

[iritkatriel]

Maybe I did something wrong. Will check tomorrow. In the meantime I’m updating the versions. Thanks for double checking.