Update test coverage

src/Cbc.jl

@@ -5,12 +5,11 @@
 
 module Cbc
 
-import Cbc_jll
-import MathOptInterface
+import Cbc_jll: libcbcsolver
+import MathOptInterface as MOI
 import SparseArrays
 
 function __init__()
-    global libcbcsolver = Cbc_jll.libcbcsolver
     version_str = unsafe_string(Cbc_getVersion())
     version = if version_str == "devel"
         # Support un-released versions of Cbc. These may differ in C API

src/MOI_wrapper/MOI_wrapper.jl

@@ -3,8 +3,6 @@
 # Use of this source code is governed by an MIT-style license that can be found
 # in the LICENSE.md file or at https://opensource.org/licenses/MIT.
 
-const MOI = MathOptInterface
-
 MOI.Utilities.@product_of_sets(
     _LPProductOfSets,
     MOI.EqualTo{T},
@@ -129,9 +127,6 @@ function MOI.set(
     param::MOI.RawOptimizerAttribute,
     value::String,
 )
-    if !MOI.supports(model, param)
-        throw(MOI.UnsupportedAttribute(param))
-    end
     model.params[param.name] = value
     if param.name == "threads" && Sys.iswindows()
         @warn(
@@ -389,7 +384,8 @@ function MOI.copy_to(dest::Optimizer, src::OptimizerCache)
     for ci in MOI.get(src, attr)
         Cbc_setInteger(dest, Cint(ci.value - 1))
     end
-    if MOI.VariableName() in MOI.get(src, MOI.ListOfVariableAttributesSet())
+    if MOI.VariableName() in MOI.get(src, MOI.ListOfVariableAttributesSet()) &&
+       MOI.get(dest, SetVariableNames())::Bool
         for x in MOI.get(src, MOI.ListOfVariableIndices())
             name = MOI.get(src, MOI.VariableName(), x)
             if !isempty(name) && isascii(name)
@@ -556,7 +552,13 @@ end
 ### VariableName
 ###
 
-MOI.supports(::Optimizer, ::MOI.VariableName, ::Type{MOI.VariableIndex}) = true
+function MOI.supports(
+    model::Optimizer,
+    ::MOI.VariableName,
+    ::Type{MOI.VariableIndex},
+)
+    return model.set_names
+end
 
 function MOI.set(
     model::Optimizer,

test/MOI_wrapper.jl

@@ -91,6 +91,7 @@ function test_params()
     )
     model = Cbc.Optimizer()
     MOI.set(model, MOI.RawOptimizerAttribute("maxSol"), 1)
+    @test MOI.get(model, MOI.RawOptimizerAttribute("maxSol")) == "1"
     MOI.set(model, MOI.RawOptimizerAttribute("presolve"), "off")
     MOI.set(model, MOI.RawOptimizerAttribute("cuts"), "off")
     MOI.set(model, MOI.RawOptimizerAttribute("heur"), "off")
@@ -104,6 +105,11 @@ function test_params()
     MOI.optimize!(model)
     @test MOI.get(model, MOI.TerminationStatus()) == MOI.SOLUTION_LIMIT
     @test MOI.get(model, MOI.PrimalStatus()) == MOI.FEASIBLE_POINT
+    @test MOI.get(model, MOI.RelativeGap()) >= 0
+    @test MOI.is_set_by_optimize(Cbc.Status())
+    @test MOI.get(model, Cbc.Status()) == 1
+    @test MOI.is_set_by_optimize(Cbc.SecondaryStatus())
+    @test MOI.get(model, Cbc.SecondaryStatus()) == 6
     return
 end
 
@@ -167,7 +173,9 @@ function test_issue_187()
     MOI.set(model, MOI.Silent(), true)
     x = MOI.add_variables(model, 2)
     MOI.add_constraint.(model, x, MOI.ZeroOne())
+    @test MOI.get.(model, MOI.VariablePrimalStart(), x) == [nothing, nothing]
     MOI.set.(model, MOI.VariablePrimalStart(), x, 0.0)
+    @test MOI.get.(model, MOI.VariablePrimalStart(), x) == [0.0, 0.0]
     y = MOI.add_variables(model, 2)
     MOI.add_constraint.(model, y, MOI.ZeroOne())
 
@@ -439,7 +447,9 @@ function test_variable_name()
         x = MOI.add_variable(model)
         MOI.set(model, MOI.VariableName(), x, name)
         cbc = Cbc.Optimizer()
+        @test !MOI.supports(cbc, MOI.VariableName(), MOI.VariableIndex)
         MOI.set(cbc, Cbc.SetVariableNames(), true)
+        @test MOI.supports(cbc, MOI.VariableName(), MOI.VariableIndex)
         index_map = MOI.copy_to(cbc, model)
         @test MOI.get(cbc, MOI.VariableName(), index_map[x]) == inner
     end
@@ -466,6 +476,17 @@ function test_segfault()
     return
 end
 
+function test_get_objective_sense()
+    for sense in (MOI.MIN_SENSE, MOI.MAX_SENSE, MOI.FEASIBILITY_SENSE)
+        model = Cbc.Optimizer()
+        src = MOI.Utilities.Model{Float64}()
+        MOI.set(src, MOI.ObjectiveSense(), sense)
+        MOI.copy_to(model, src)
+        @test MOI.get(model, MOI.ObjectiveSense()) == sense
+    end
+    return
+end
+
 end
 
 TestMOIWrapper.runtests()