diff --git a/src/plugins/stopping_rules.jl b/src/plugins/stopping_rules.jl
index 520813c19..e13877c52 100644
--- a/src/plugins/stopping_rules.jl
+++ b/src/plugins/stopping_rules.jl
@@ -171,14 +171,9 @@ function convergence_test(
 
     if graph.objective_sense == MOI.MIN_SENSE
         return sample_mean - sample_ci <= current_bound
-    elseif graph.objective_sense == MOI.MAX_SENSE
-        return current_bound <= sample_mean + sample_ci
     else
-        # If sense is none of the above for some awkward reason, return to
-        # previous criteria
-        return sample_mean - sample_ci <=
-               current_bound <=
-               sample_mean + sample_ci
+        @assert graph.objective_sense == MOI.MAX_SENSE
+        return current_bound <= sample_mean + sample_ci
     end
 end
 
@@ -281,10 +276,6 @@ mutable struct SimulationStoppingRule{F} <: AbstractStoppingRule
     bound_tol::Float64
 end
 
-function _get_state_variable_value(key)
-    return sp -> JuMP.value(JuMP.variable_by_name(sp, "$(key)_out"))
-end
-
 """
     SimulationStoppingRule(;
         sampling_scheme::AbstractSamplingScheme = SDDP.InSampleMonteCarlo(),
diff --git a/src/visualization/spaghetti_plot.jl b/src/visualization/spaghetti_plot.jl
index f7ca6dd80..07ae7808f 100644
--- a/src/visualization/spaghetti_plot.jl
+++ b/src/visualization/spaghetti_plot.jl
@@ -152,15 +152,14 @@ function save(p::SpaghettiPlot, args...; kwargs...)
     return plot(p, args...; kwargs...)
 end
 
-function launch_file(filename)
+function launch_file(filename, fn = run)
     if Sys.iswindows()
-        run(`$(ENV["COMSPEC"]) /c start $(filename)`)
+        return fn(`$(ENV["COMSPEC"]) /c start $(filename)`)
     elseif Sys.isapple()
-        run(`open $(filename)`)
+        return fn(`open $(filename)`)
     elseif Sys.islinux() || Sys.isbsd()
-        run(`xdg-open $(filename)`)
+        return fn(`xdg-open $(filename)`)
     else
         error("Unable to show plot. Try opening the file $(filename) manually.")
     end
-    return
 end
diff --git a/test/binary_expansion.jl b/test/binary_expansion.jl
index 0ba56a8be..9a3a28822 100644
--- a/test/binary_expansion.jl
+++ b/test/binary_expansion.jl
@@ -71,6 +71,7 @@ function test_Binary_Expansion()
     @test bincontract([0, 1, 0], 0.1) ≈ 0.2
     @test bincontract([1, 1, 0], 0.1) ≈ 0.3
     @test bincontract([1, 0, 1], 0.1) ≈ 0.5
+    return
 end
 
 end  # module
diff --git a/test/plugins/bellman_functions.jl b/test/plugins/bellman_functions.jl
index 2adf25df8..8464f86c0 100644
--- a/test/plugins/bellman_functions.jl
+++ b/test/plugins/bellman_functions.jl
@@ -362,16 +362,25 @@ function test_biobjective_cut_selection()
             )
         end
     end
-    SDDP.train_biobjective(
+    ret = SDDP.train_biobjective(
         model;
         solution_limit = 10,
         iteration_limit = 10,
         print_level = 0,
     )
+    @test ret isa Dict{Float64,Float64}
     n_cuts = count(model[1].bellman_function.global_theta.cuts) do cut
         return cut.constraint_ref !== nothing
     end
     @test n_cuts < 100
+    ret = SDDP.train_biobjective(
+        model;
+        solution_limit = 10,
+        iteration_limit = 10,
+        print_level = 0,
+        include_timing = true,
+    )
+    @test ret isa Dict{Float64,Tuple{Float64,Float64}}
     return
 end
 
diff --git a/test/plugins/parallel_schemes.jl b/test/plugins/parallel_schemes.jl
index 81a64e569..129ce4ef7 100644
--- a/test/plugins/parallel_schemes.jl
+++ b/test/plugins/parallel_schemes.jl
@@ -45,6 +45,41 @@ function test_Asynchronous_optimizer()
     a = SDDP.Asynchronous(HiGHS.Optimizer)
     a.init_callback(model)
     @test solver_name(model[2].subproblem) == "HiGHS"
+    model = SDDP.LinearPolicyGraph(;
+        stages = 3,
+        lower_bound = 0.0,
+        direct_mode = true,
+        optimizer = HiGHS.Optimizer,
+    ) do sp, stage
+        @variable(sp, 0 <= x <= 100, SDDP.State, initial_value = 0)
+        @stageobjective(sp, x.in)
+    end
+    scheme = SDDP.Asynchronous()
+    @test_throws(
+        ErrorException(
+            "Cannot use asynchronous solver with optimizers in direct mode.",
+        ),
+        scheme.init_callback(model),
+    )
+    @test_throws(
+        ErrorException(
+            "Cannot use asynchronous solver with optimizers in direct mode.",
+        ),
+        SDDP._uninitialize_solver(model; throw_error = true),
+    )
+    model = SDDP.LinearPolicyGraph(; stages = 3, lower_bound = 0.0) do sp, stage
+        @variable(sp, 0 <= x <= 100, SDDP.State, initial_value = 0)
+        @stageobjective(sp, x.in)
+    end
+    scheme = SDDP.Asynchronous()
+    @test_throws(
+        ErrorException(
+            "You must supply an optimizer for the policy graph, either by passing\n" *
+            "one to the `optimizer` keyword argument to `PolicyGraph`, or by\n" *
+            "using `JuMP.set_optimizer(model, optimizer)`.\n",
+        ),
+        scheme.init_callback(model),
+    )
     return
 end
 
diff --git a/test/plugins/stopping_rules.jl b/test/plugins/stopping_rules.jl
index f715c7057..69bd055dc 100644
--- a/test/plugins/stopping_rules.jl
+++ b/test/plugins/stopping_rules.jl
@@ -134,6 +134,12 @@ function test_Statistical()
         [SDDP.Log(1, 12.0, 9.0, 1.0, 1, 1, " ", false)],
         rule,
     )
+    rule = SDDP.Statistical(; num_replications = 20, iteration_period = 2)
+    @test !SDDP.convergence_test(
+        model,
+        [SDDP.Log(1, 6.0, 9.0, 1.0, 1, 1, " ", false)],
+        rule,
+    )
     return
 end
 
@@ -194,6 +200,17 @@ function test_BoundStalling()
         ],
         rule,
     )
+    rule = SDDP.BoundStalling(5, 1.0)
+    @test !SDDP.convergence_test(
+        graph,
+        [
+            SDDP.Log(1, 0.0, 0.0, 1.0, 1, 1, " ", false),
+            SDDP.Log(2, 0.0, 0.0, 1.0, 1, 1, " ", false),
+            SDDP.Log(3, 0.0, 0.0, 1.0, 1, 1, " ", false),
+            SDDP.Log(4, 0.0, 0.0, 1.0, 1, 1, " ", false),
+        ],
+        rule,
+    )
     return
 end
 
@@ -276,6 +293,10 @@ function test_SimulationStoppingRule()
     @test !SDDP.convergence_test(graph, log[1:10], rule)
     @test !SDDP.convergence_test(graph, log[1:19], rule)
     @test SDDP.convergence_test(graph, log[1:20], rule)
+    rule = SDDP.SimulationStoppingRule(; period = 1)
+    rule.last_iteration = 20
+    @test rule.period == 1
+    @test !SDDP.convergence_test(graph, log, rule)
     return
 end
 
diff --git a/test/user_interface.jl b/test/user_interface.jl
index 6bff8d58c..e83c3e33a 100644
--- a/test/user_interface.jl
+++ b/test/user_interface.jl
@@ -453,13 +453,31 @@ function test_numerical_stability_report()
         lower_bound = -1e10,
         direct_mode = false,
     ) do subproblem, t
-        @variable(subproblem, x >= -1e7, SDDP.State, initial_value = 1e-5)
+        @variable(subproblem, x >= -1e-7, SDDP.State, initial_value = 1e-5)
         @variable(subproblem, 1 <= y <= 5, Int)  # Note: this is just to test range fallback
-        @constraint(subproblem, 1e9 * x.out >= 1e-6 * x.in + 1e-8)
+        @constraint(subproblem, 1e-8 <= x.in + y <= 10)
+        @constraint(subproblem, [x.in, x.out, y] in MOI.ExponentialCone())
+        @constraint(subproblem, 1e9 * x.out >= 1e-6 * x.in + 0)
         @stageobjective(subproblem, 1e9 * x.out)
     end
+    mktempdir() do dir
+        filename = joinpath(dir, "log.stdout")
+        open(filename, "w") do io
+            redirect_stdout(io) do
+                @test SDDP.numerical_stability_report(model) === nothing
+                return
+            end
+            return
+        end
+        contents = read(filename, String)
+        @test occursin("WARNING", contents)
+        @test occursin("numerical stability report", contents)
+        return
+    end
     report = sprint(SDDP.numerical_stability_report, model)
     @test occursin("WARNING", report)
+    @test occursin("[1e-07, 1e+10]", report)
+    @test occursin("[1e-08, 1e+01]", report)
     report_2 =
         sprint(io -> SDDP.numerical_stability_report(io, model; by_node = true))
     @test occursin("numerical stability report for node: 1", report_2)
@@ -518,6 +536,30 @@ function test_objective_state()
     return
 end
 
+function test_objective_state_two()
+    model =
+        SDDP.LinearPolicyGraph(; stages = 2, lower_bound = 0) do subproblem, t
+            @variable(subproblem, x, SDDP.State, initial_value = 0)
+            SDDP.add_objective_state(
+                subproblem;
+                initial_value = (1.5, 0.0),
+                lower_bound = (0.75, 0.0),
+                upper_bound = (2.25, 0.0),
+                lipschitz = (100.0, 100.0),
+            ) do y, ω
+                return (y + ω, y)
+            end
+            SDDP.parameterize(subproblem, [1, 2]) do ω
+                ret = SDDP.objective_state(subproblem)
+                @test ret isa Tuple{Float64,Float64}
+                @stageobjective(subproblem, ret[1] * x.out)
+                return
+            end
+        end
+    SDDP.parameterize(model[1], 2)
+    return
+end
+
 function test_belief_updater()
     graph = SDDP.LinearGraph(2)
     SDDP.add_edge(graph, 2 => 1, 0.9)
@@ -839,6 +881,36 @@ function test_policy_graph_sense_error()
     return
 end
 
+function test_print_problem_statistics()
+    graph = SDDP.Graph(0)
+    for i in 1:4
+        SDDP.add_node(graph, i)
+    end
+    SDDP.add_edge(graph, 0 => 1, 1.0)
+    SDDP.add_edge(graph, 0 => 4, 0.0)
+    SDDP.add_edge(graph, 1 => 2, 0.2)
+    SDDP.add_edge(graph, 1 => 3, 0.3)
+    SDDP.add_edge(graph, 1 => 4, 0.5)
+    SDDP.add_edge(graph, 2 => 3, 0.5)
+    SDDP.add_edge(graph, 2 => 4, 0.5)
+    SDDP.add_edge(graph, 3 => 4, 1.0)
+    graph
+    model = SDDP.PolicyGraph(graph; lower_bound = 0.0) do sp, t
+        @variable(sp, x, SDDP.State, initial_value = 1.0)
+        @constraint(sp, x.in == x.out)
+    end
+    contents = sprint(
+        SDDP.print_problem_statistics,
+        model,
+        false,
+        nothing,
+        nothing,
+        nothing,
+    )
+    @test occursin("scenarios       : 4.00000e+00", contents)
+    return
+end
+
 end  # module
 
 TestUserInterface.runtests()
diff --git a/test/visualization/visualization.jl b/test/visualization/visualization.jl
index fb632a5e8..da64166df 100644
--- a/test/visualization/visualization.jl
+++ b/test/visualization/visualization.jl
@@ -55,6 +55,7 @@ function test_SpaghettiPlot()
         @test read("test.html", String) == read(control, String)
     end
     rm("test.html")
+    @test SDDP.launch_file("test.html", identity) isa Cmd
     return
 end