[Bridges] throw GetAttributeNotAllowed in ZerosBridge (#2863)

Author: odow

src/Bridges/Variable/bridges/ZerosBridge.jl

@@ -90,16 +90,16 @@ end
 
 function MOI.get(
     ::MOI.ModelLike,
-    ::MOI.ConstraintDual,
+    attr::MOI.ConstraintDual,
     ::ZerosBridge{T},
 ) where {T}
-    return error(
+    msg =
         "Unable to query the dual of a variable bound that was reformulated " *
         "using `ZerosBridge`. This usually arises in conic solvers when a " *
         "variable is fixed to a value. As a work-around, instead of creating " *
         "a fixed variable using variable bounds like `p == 1`, add an affine " *
-        "equality constraint like `1 * p == 1` (or `[1 * p - 1,] in Zeros(1)`).",
-    )
+        "equality constraint like `1 * p == 1` (or `[1 * p - 1,] in Zeros(1)`)."
+    return throw(MOI.GetAttributeNotAllowed(attr, msg))
 end
 
 function MOI.get(

test/Bridges/Variable/zeros.jl

@@ -175,7 +175,8 @@ function test_zeros()
     @test MOI.get(bridged_mock, MOI.ConstraintDual(), c1) == 0.0
     @test MOI.get(bridged_mock, MOI.ConstraintDual(), c2) == 1.0
     attr = MOI.ConstraintDual()
-    err = ErrorException(
+    err = MOI.GetAttributeNotAllowed(
+        attr,
         "Unable to query the dual of a variable bound that was reformulated " *
         "using `ZerosBridge`. This usually arises in conic solvers when a " *
         "variable is fixed to a value. As a work-around, instead of creating " *