improve test coverage slightly

Author: baggepinnen

lib/ControlSystemsBase/ext/ControlSystemsBaseMakieExt.jl

@@ -372,18 +372,6 @@ function CSMakie.marginplot!(fig, systems::Union{LTISystem, AbstractVector{<:LTI
                                                                      allMargins=true, 
                                                                      adjust_phase_start)
 
-                # Limit number of margins shown
-                if length(gm) > 5
-                    idx = sortperm(gm)
-                    wgm = wgm[idx[1:5]]
-                    gm = gm[idx[1:5]]
-                end
-                if length(pm) > 5
-                    idx = sortperm(pm)
-                    wpm = wpm[idx[1:5]]
-                    pm = pm[idx[1:5]]
-                end
-                
                 # Magnitude plot
                 ax_mag = axes_mag[i, j]
                 magdata = vec(bmag[i, j, :])

lib/ControlSystemsBase/test/test_makie_plots.jl

@@ -65,7 +65,7 @@ import CairoMakie.Makie
             @test fig isa Makie.Figure
         end
         @test_nowarn begin
-            fig = CSMakie.nyquistplot(P, w; Ms_circles=[1.5, 2.0])
+            fig = CSMakie.nyquistplot(P, w; Ms_circles=[1.5, 2.0], Mt_circles=[1.5, 2.0])
             @test fig isa Makie.Figure
         end
         @test_nowarn begin
@@ -136,6 +136,12 @@ import CairoMakie.Makie
             Makie.plot!(fig[1,2], res, plotu=true, plotx=true)
             @test fig isa Makie.Figure
         end
+
+        res = step(Pmimo, t)
+        @test_nowarn begin
+            fig = Makie.plot(res; plotu=true)
+            @test fig isa Makie.Figure
+        end
     end
 
     @testset "StepInfo plot" begin