id,summary,reporter,owner,description,type,status,priority,milestone,component,resolution,keywords,cc,merged,author,reviewer,upstream,work_issues,branch,commit,dependencies,stopgaps
20424,"More tests for common MIP TestSuite: add_col, solve; some fixes for backends",mkoeppe,,"Split out from #20323.
This patch adds new _test methods for `add_col`, `solve`, and for #18572 (but disabled for CVXOPT, where it fails).
To make the new test methods happy,
- implement `add_col` for Gurobi;
- fix Gurobi's treatment of unbounded variables;
- fix CPLEX unboundedness detection.
From dimpase:
I recall asking how one deals with different backends producing different, albeit equivalent, outputs. E.g. some of them would even introduce extra variables for some constraints (see e.g. http://trac.sagemath.org/ticket/13148#comment:2). Some backends assign names to constraints automatically.
",defect,needs_review,major,sage-7.2,numerical,,lp,dimpase vdelecroix jdemeyer chapoton nbruin,,Matthias Koeppe,,N/A,,u/mkoeppe/backend_testsuite_failing_tests,07c9c5dd48f4911e1f249698c3c13892af4a06f1,"#20323,#20600,#20325",