#14912: UniqueRepresentation tutorial could use more love
-------------------------------------+-------------------------------------
       Reporter:  darij              |        Owner:
           Type:  defect             |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-5.13
      Component:  documentation      |   Resolution:
       Keywords:  documentation,     |    Merged in:
  structure                          |    Reviewers:  Darij Grinberg,
        Authors:  Simon King         |  Travis Scrimshaw
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
   Dependencies:  #14888             |     Stopgaps:
-------------------------------------+-------------------------------------

Comment (by tscrim):

 Hey Simon,

 With `sage-5.13.beta2`, I get:
 {{{
 sage -t unique_representation.py
 **********************************************************************
 File "unique_representation.py", line 822, in
 sage.structure.unique_representation.CachedRepresentation
 Failed example:
     O is SomeClass(2)
 Expected:
     creating new instance for argument 2
     deleting instance for argument 2
     False
 Got:
     creating new instance for argument 2
     False
 **********************************************************************
 File "unique_representation.py", line 826, in
 sage.structure.unique_representation.CachedRepresentation
 Failed example:
     del O
 Expected:
     deleting instance for argument 1
 Got:
     <BLANKLINE>
 **********************************************************************
 File "unique_representation.py", line 828, in
 sage.structure.unique_representation.CachedRepresentation
 Failed example:
     O = SomeClass(1)
 Expected:
     creating new instance for argument 1
 Got:
     <BLANKLINE>
 **********************************************************************
 1 item had failures:
    3 of  89 in sage.structure.unique_representation.CachedRepresentation
     [229 tests, 3 failures, 4.18 s]
 ----------------------------------------------------------------------
 sage -t unique_representation.py  # 3 doctests failed
 ----------------------------------------------------------------------
 }}}
 with the following patches applied:
 {{{
 trac_15327-qfold-dg.patch
 trac_15327-fixes-dg.patch
 trac_15305-coercion_tensor_products-ts.patch
 trac13394-weak_value_dictionary.patch
 trac_15311-hall_algebras-ts.patch
 trac_10963-more_functorial_constructions-nt.patch
 trac_10963-more_functorial_constructions-graded-modules-fix-nt.patch
 trac_10963_doctest_correction-fc.patch
 trac_14102-nonsymmetric-macdonald.patch
 trac9107_nesting_nested_classes.patch
 trac_9107_fix_cross_reference.patch
 trac_14685_bug_aorder_lazypowerseries.patch
 trac_15150-ncsym-ts.patch
 trac_15174-qfold1.patch
 trac_15174-final-touches-dg.patch
 trac_15174-review-ts.patch
 trac14912-unique_doc.patch
 trac_14912-comments-dg.patch
 trac_14912-more-ts-dg.patch
 trac_14912-doc-fixes-sk.patch
 }}}
 I don't think there's anything from the other patches which would cause
 this to fail... Can someone check this on a later version of Sage?

--
Ticket URL: <http://trac.sagemath.org/ticket/14912#comment:53>
Sage <http://www.sagemath.org>
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