diff --git a/src/Containers/DenseAxisArray.jl b/src/Containers/DenseAxisArray.jl
index 0e421cd36c6..4f124de0a50 100644
--- a/src/Containers/DenseAxisArray.jl
+++ b/src/Containers/DenseAxisArray.jl
@@ -12,7 +12,6 @@
 struct _AxisLookup{D}
     data::D
 end
-Base.:(==)(x::_AxisLookup{D}, y::_AxisLookup{D}) where {D} = x.data == y.data
 
 # Default fallbacks.
 Base.getindex(::_AxisLookup, key) = throw(KeyError(key))
diff --git a/test/Containers/test_DenseAxisArray.jl b/test/Containers/test_DenseAxisArray.jl
index fd780720a35..5d4d1345621 100644
--- a/test/Containers/test_DenseAxisArray.jl
+++ b/test/Containers/test_DenseAxisArray.jl
@@ -874,4 +874,51 @@ function test_multi_arg_eachindex()
     return
 end
 
+function test_LinearIndices()
+    Containers.@container(x[i in 2:3], i)
+    @test_throws(
+        ErrorException("DenseAxisArray does not support this operation."),
+        LinearIndices(x),
+    )
+    return
+end
+
+function test_CartesianIndices()
+    Containers.@container(x[i in 2:3], i)
+    @test CartesianIndices(x) == CartesianIndices((2,))
+    return
+end
+
+function test_show_nd()
+    Containers.@container(
+        x[a in 2:3, b in 2:3, c in 2:14, d in 2:14],
+        (a, b, c, d),
+    )
+    s = sprint(io -> show(IOContext(io, :limit => true), x))
+    limit_indices = [2, 3, 4, 12, 13, 14]
+    for c in 2:14, d in 2:14
+        is_visible = (c in limit_indices && d in limit_indices)
+        @test occursin("[:, :, $c, $d]", s) == is_visible
+        for a in 2:3, b in 2:3
+            @test occursin("($a, $b, $c, $d)", s) == is_visible
+        end
+    end
+    s = sprint(io -> show(IOContext(io, :limit => false), x))
+    limit_indices = [2, 3, 4, 12, 13, 14]
+    for c in 2:14, d in 2:14
+        @test occursin("[:, :, $c, $d]", s)
+        for a in 2:3, b in 2:3
+            @test occursin("($a, $b, $c, $d)", s)
+        end
+    end
+    return
+end
+
+function test_view_DenseAxisArray()
+    Containers.@container(x[a in 2:3], a)
+    @test_throws KeyError view(x, 3:4)
+    @test_throws KeyError view(x, 4)
+    return
+end
+
 end  # module
diff --git a/test/Containers/test_SparseAxisArray.jl b/test/Containers/test_SparseAxisArray.jl
index 86a6b0d85df..296dc83dfba 100644
--- a/test/Containers/test_SparseAxisArray.jl
+++ b/test/Containers/test_SparseAxisArray.jl
@@ -381,4 +381,11 @@ function test_sparseaxisarray_order()
     return
 end
 
+function test_show_empty_limit()
+    x = SparseAxisArray(Dict{Tuple{Int},Int}())
+    @test sprint(io -> show(IOContext(io, :limit => false), x)) ==
+          "$SparseAxisArray{$Int, 1, Tuple{$Int}} with 0 entries"
+    return
+end
+
 end  # module
diff --git a/test/Containers/test_macro.jl b/test/Containers/test_macro.jl
index 9227e240fe0..cdb2d3fe613 100644
--- a/test/Containers/test_macro.jl
+++ b/test/Containers/test_macro.jl
@@ -266,4 +266,10 @@ function test_add_additional_args()
     return
 end
 
+function test_trailing_semicolon()
+    Containers.@container(x[a in 2:3;], a)
+    @test x isa DenseAxisArray
+    return
+end
+
 end  # module
diff --git a/test/Containers/test_vectorized_product_iterator.jl b/test/Containers/test_vectorized_product_iterator.jl
index 03b509fbbf3..d38a07850b3 100644
--- a/test/Containers/test_vectorized_product_iterator.jl
+++ b/test/Containers/test_vectorized_product_iterator.jl
@@ -19,6 +19,7 @@ function test_VectorizedProductIterator()
     @test isempty(collect(Containers.vectorized_product(2, I, 1:0)))
     @test collect(Containers.vectorized_product(2, I)) ==
           [(2, 1) (2, 3) (2, 2) (2, 4)]
+    @test ndims(Containers.vectorized_product(2, I)) == 2
     return
 end
 
@@ -35,4 +36,13 @@ function test_infinite_size()
     return
 end
 
+function test_container_two_arg()
+    a = Containers.container(Containers.vectorized_product(2:3, 1:2)) do i, j
+        return (i, j)
+    end
+    Containers.@container(b[i in 2:3, j in 1:2], (i, j))
+    @test a == b
+    return
+end
+
 end  # module
diff --git a/test/test_constraint.jl b/test/test_constraint.jl
index cb63bb99e29..0ae9d46fca5 100644
--- a/test/test_constraint.jl
+++ b/test/test_constraint.jl
@@ -2194,27 +2194,37 @@ function test_shadow_price_errors()
     @test_throws err shadow_price(c)
     c = @constraint(model, x == 1)
     @test_throws err shadow_price(c)
-
     model = Model()
-    @variable(model, x >= 0)
+    @variable(model, 0 <= x <= 1)
     set_optimizer(
         model,
-        () -> MOI.Utilities.MockOptimizer(MOI.Utilities.Model{Float64}()),
+        () -> MOI.Utilities.MockOptimizer(
+            MOI.Utilities.Model{Float64}();
+            eval_variable_constraint_dual = false,
+        ),
     )
     optimize!(model)
     mock = unsafe_backend(model)
     MOI.set(mock, MOI.TerminationStatus(), MOI.OPTIMAL)
     MOI.set(mock, MOI.PrimalStatus(), MOI.FEASIBLE_POINT)
     MOI.set(mock, MOI.DualStatus(), MOI.FEASIBLE_POINT)
-    F, S = MOI.VariableIndex, MOI.GreaterThan{Float64}
-    xi = only(MOI.get(mock, MOI.ListOfVariableIndices()))
-    MOI.set(mock, MOI.ConstraintDual(), MOI.ConstraintIndex{F,S}(xi.value), 1.0)
+    F = MOI.VariableIndex
+    S1, S2 = MOI.GreaterThan{Float64}, MOI.LessThan{Float64}
+    i = only(MOI.get(mock, MOI.ListOfVariableIndices())).value
+    MOI.set(mock, MOI.ConstraintDual(), MOI.ConstraintIndex{F,S1}(i), 1.0)
+    MOI.set(mock, MOI.ConstraintDual(), MOI.ConstraintIndex{F,S2}(i), -1.0)
     @test_throws(
         ErrorException(
             "The shadow price is not available because the objective sense $FEASIBILITY_SENSE is not minimization or maximization.",
         ),
         shadow_price(LowerBoundRef(x)),
     )
+    @test_throws(
+        ErrorException(
+            "The shadow price is not available because the objective sense $FEASIBILITY_SENSE is not minimization or maximization.",
+        ),
+        shadow_price(UpperBoundRef(x)),
+    )
     return
 end
 
diff --git a/test/test_model.jl b/test/test_model.jl
index 6db3a692ed0..2f6009acf3f 100644
--- a/test/test_model.jl
+++ b/test/test_model.jl
@@ -1389,4 +1389,27 @@ function test_deepcopy()
     return
 end
 
+struct _ModelNoSolverName <: MOI.AbstractOptimizer end
+
+MOI.is_empty(::_ModelNoSolverName) = true
+
+function test_solver_name_not_implemented()
+    model = direct_model(_ModelNoSolverName())
+    @test solver_name(model) ==
+          "SolverName() attribute not implemented by the optimizer."
+    return
+end
+
+struct _ModelSolverNameError <: MOI.AbstractOptimizer end
+
+MOI.is_empty(::_ModelSolverNameError) = true
+
+MOI.get(::_ModelSolverNameError, ::MOI.SolverName) = error("test")
+
+function test_solver_name_error()
+    model = direct_model(_ModelSolverNameError())
+    @test_throws ErrorException("test") solver_name(model)
+    return
+end
+
 end  # module TestModels