Pass-through AbstractOptimizerAttribute (#335)

* handle `AbstractOptimizerAttribute`

* test + format

* fix runic's mess

Author: klamike

src/moi_wrapper.jl

@@ -1045,3 +1045,7 @@ end
 function MOI.get(model::Optimizer, ::NonLinearKKTJacobianFactorization)
     return model.input_cache.factorization
 end
+
+function MOI.set(model::Optimizer, attr::MOI.AbstractOptimizerAttribute, value)
+    return MOI.set(model.optimizer, attr, value)
+end

test/jump_wrapper.jl

@@ -56,6 +56,11 @@ function test_jump_api()
         @testset "$(MODEL) with: $(SOLVER), $(ineq ? "ineqs" : "eqs"), $(_min ? "Min" : "Max"), $(flip ? "geq" : "leq") bridge:$with_bridge_type" begin
             model = MODEL(SOLVER; with_bridge_type)
             set_silent(model)
+            if SOLVER === Ipopt.Optimizer
+                # avoiding MOI.TimeLimitSec to cover the RawOptimizerAttribute path
+                # only tests that MOI doesn't throw an unsupported error (#335)
+                set_optimizer_attribute(model, "max_wall_time", 600.0)
+            end
 
             p_val = 4.0
             pc_val = 2.0