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[3.11] gh-108851: Fix tomllib recursion tests (#108853) (#109013)

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gh-108851: Fix tomllib recursion tests (#108853)

* Add get_recursion_available() and get_recursion_depth() functions
  to the test.support module.
* Change infinite_recursion() default max_depth from 75 to 100.
* Fix test_tomllib recursion tests for WASI buildbots: reduce the
  recursion limit and compute the maximum nested array/dict depending
  on the current available recursion limit.
* test.pythoninfo logs sys.getrecursionlimit().
* Enhance test_sys tests on sys.getrecursionlimit()
  and sys.setrecursionlimit().

Backport notes:

* Set support.infinite_recursion() minimum to 4 frames.
* test_support.test_get_recursion_depth() uses limit-2, apparently
  f-string counts for 2 frames in Python 3.11.
* test_sys.test_setrecursionlimit_to_depth() tests depth+2 instead of
  depth+1.

(cherry picked from commit 8ff1142578)
This commit is contained in:
Victor Stinner 2023-09-06 18:40:39 +02:00 • committed by GitHub
parent d61b8f9b8b
commit 95eb9849dd
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7 changed files with 183 additions and 41 deletions
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Lib/test/pythoninfo.py
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@ -112,6 +112,7 @@ def collect_sys(info_add):
call_func(info_add, 'sys.androidapilevel', sys, 'getandroidapilevel')
call_func(info_add, 'sys.windowsversion', sys, 'getwindowsversion')
call_func(info_add, 'sys.getrecursionlimit', sys, 'getrecursionlimit')
encoding = sys.getfilesystemencoding()
if hasattr(sys, 'getfilesystemencodeerrors'):