add test_plotting

Author: ufechner7

src/VortexStepMethod.jl

@@ -18,6 +18,7 @@ export calculate_results, solve_circulation_distribution
 export add_section!, set_va!
 export calculate_span, calculate_projected_area
 export plot_wing, plot_circulation_distribution, plot_geometry, plot_distribution, plot_polars
+export show_plot
 
 """
    const MVec3    = MVector{3, Float64}

test/runtests.jl

@@ -8,4 +8,5 @@ println("Running tests...")
     include("test_semi_infinite_filament.jl")
     include("test_wing_aerodynamics.jl")
     include("test_wing_geometry.jl")
+    include("test_plotting.jl")
 end

test/test_plotting.jl

@@ -0,0 +1,11 @@
+using VortexStepMethod
+using ControlPlots
+using Test
+
+plt.ioff()
+@testset "Plotting" begin
+    fig = plt.plot([1,2,3])
+    @test fig isa Vector{plt.PyObject}
+    show_plot(fig)
+end
+plt.ion()