Opened 18 months ago
Closed 17 months ago
#26854 closed enhancement (fixed)
Test for certificates in finite posets
Reported by:  jmantysalo  Owned by:  

Priority:  major  Milestone:  sage8.6 
Component:  combinatorics  Keywords:  
Cc:  chapoton  Merged in:  
Authors:  Jori Mäntysalo  Reviewers:  Travis Scrimshaw 
Report Upstream:  N/A  Work issues:  
Branch:  9c5fe51 (Commits)  Commit:  9c5fe515a52924b77a18b5ea6dc218f0af9a0037 
Dependencies:  #26861, #26857, #26847  Stopgaps: 
Description
An error reported in #26847 shows that tests in src/sage/tests/finite_poset.py
do not check that .some_function(certificate=True)
returns a pair and .some_function(certificate=True)[0]
is always equal to .some_function()
Change History (14)
comment:1 Changed 18 months ago by
 Cc chapoton added
comment:2 followup: ↓ 3 Changed 18 months ago by
sage: from sage.misc.sageinspect import sage_getargspec sage: sage_getargspec(LatticePoset().is_subdirectly_reducible).args ['self', 'certificate']
comment:3 in reply to: ↑ 2 Changed 18 months ago by
Replying to chapoton:
Thanks, that was fast. So the code can be something like
from sage.misc.sageinspect import sage_getargspec props = ['is_distributive', 'is_self_dual', 'is_modular'] L = posets.RandomLattice(10, 0.99) for p in props: f = attrcall(p) if 'certificate' in sage_getargspec(getattr(L, p)).args: if attrcall(p)(L) != attrcall(p, certificate=True)(L)[0]: print("Oh no!")
comment:4 Changed 18 months ago by
As an example of bugs to be found with this: #26857.
Nice way to handle is_doubling_constructible
and other currently handled by test_attrcall
is needed.
comment:5 Changed 18 months ago by
 Branch set to u/jmantysalo/test_for_certificates_in_finite_posets
comment:6 Changed 18 months ago by
 Commit set to cfb20e029808fdb76371f5ad8b26ad7933c4667a
Untested code for lattices.
More to be done for general posets.
New commits:
cfb20e0  Test results with certificate=True

comment:7 Changed 18 months ago by
 Commit changed from cfb20e029808fdb76371f5ad8b26ad7933c4667a to 9c5fe515a52924b77a18b5ea6dc218f0af9a0037
Branch pushed to git repo; I updated commit sha1. New commits:
9c5fe51  Test also finite nonlattice posets.

comment:8 Changed 18 months ago by
 Dependencies set to #26861, #26857, #26847
 Status changed from new to needs_review
comment:9 Changed 17 months ago by
This should now be ready to review, as all dependencies have been solved.
comment:10 Changed 17 months ago by
 Milestone changed from sage8.5 to sage8.6
 Reviewers set to Travis Scrimshaw
 Status changed from needs_review to positive_review
LGTM.
comment:11 Changed 17 months ago by
 Status changed from positive_review to needs_work
I think pyflakes spotted an error:
+src/sage/tests/finite_poset.py:16: dictionary key 'doubling_interval' repeated with different values +src/sage/tests/finite_poset.py:17: dictionary key 'doubling_interval' repeated with different values
comment:12 Changed 17 months ago by
 Status changed from needs_work to positive_review
That is both not in these changes and not a reason to block a positive review.
comment:13 Changed 17 months ago by
sorry.
comment:14 Changed 17 months ago by
 Branch changed from u/jmantysalo/test_for_certificates_in_finite_posets to 9c5fe515a52924b77a18b5ea6dc218f0af9a0037
 Resolution set to fixed
 Status changed from positive_review to closed
How to do this automatically and be py3compatible? With
I can see that there is a certificateoption, but "Python 3.5+ recommends inspect.signature()."