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Throw GetAttributeNotAllowed when ObjBound is GRB_INFINITY #627

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Merged
merged 2 commits into from
Mar 15, 2025
Merged

Throw GetAttributeNotAllowed when ObjBound is GRB_INFINITY #627

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c0bf6df
Throw GetAttributeNotAllowed when ObjBound is GRB_INFINITY
odow Mar 14, 2025
722113e
Update test/MOI/MOI_wrapper.jl
odow Mar 14, 2025
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3 changes: 3 additions & 0 deletions src/MOI_wrapper/MOI_wrapper.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -3320,6 +3320,9 @@ function MOI.get(model::Optimizer, attr::MOI.ObjectiveBound)
valueP = Ref{Cdouble}()
ret = GRBgetdblattr(model, "ObjBound", valueP)
_check_ret(model, ret)
if valueP[] == GRB_INFINITY
throw(MOI.GetAttributeNotAllowed((attr)))
end
return valueP[]
end

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20 changes: 20 additions & 0 deletions test/MOI/MOI_wrapper.jl
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Expand Up @@ -1618,6 +1618,26 @@ function test_multiple_solutions_when_dual_infeasible()
return
end

function test_objbound_errors_when_GRB_INFINITY()
if Gurobi._GUROBI_VERSION < v"11"
return
end
model = Gurobi.Optimizer(GRB_ENV)
MOI.set(model, MOI.Silent(), true)
x, _ = MOI.add_constrained_variable(model, MOI.Interval(0.0, 1.0))
y = MOI.add_variable(model)
MOI.set(model, MOI.ObjectiveSense(), MOI.MIN_SENSE)
f = 1.0 * x * y - 1.0 * y * y
MOI.set(model, MOI.ObjectiveFunction{typeof(f)}(), f)
MOI.optimize!(model)
@test MOI.get(model, MOI.TerminationStatus()) == MOI.DUAL_INFEASIBLE
@test_throws(
MOI.GetAttributeNotAllowed{MOI.ObjectiveBound},
MOI.get(model, MOI.ObjectiveBound()),
)
return
end

end # TestMOIWrapper

TestMOIWrapper.runtests()
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