Next try

Author: ufechner7

ext/VortexStepMethodControlPlotsExt.jl

@@ -92,7 +92,7 @@ Display a plot at specified DPI.
 # Keyword arguments
 - `dpi`: Dots per inch for the figure (default: 130)
 """
-function VortexStepMethod.show_plot(fig; dpi=130)
+function VortexStepMethod.show_plot(fig::plt.Figure; dpi=130)
     fig.set_dpi(dpi)
     plt.display(fig)
 end

test/plotting/test_plotting.jl

@@ -88,6 +88,11 @@ end
     if backend == "Makie"
         @test hasmethod(VortexStepMethod.show_plot, Tuple{Figure})
         @test_throws MethodError VortexStepMethod.show_plot(nothing)
+        @test_nowarn VortexStepMethod.show_plot(fig)
+    else
+        FigType = plt.Figure
+        @test hasmethod(VortexStepMethod.show_plot, Tuple{FigType})
+        @test_throws MethodError VortexStepMethod.show_plot(nothing)
     end
 
     @test isfile(joinpath(save_dir,