Tests added

Author: matthew-kapp

src/Electrical/Analog/ideal_components.jl

@@ -421,9 +421,10 @@ An electrical switch that is controlled by a boolean input.
     @extend v, i = oneport = OnePort()
 
     @parameters begin
-        state_init = false
-        Gon = 1e5
-        τ = 1e-3
+        state_init = false,
+        [description = "Initial switch state of type Bool. false: switch is open. true: switch is closed."]
+        Gon = 1e5, [description = "Conductance when switch is closed"]
+        τ = 1e-3, [description = "Parameter for filtered delay"]
     end
 
     @components begin

src/Electrical/Electrical.jl

@@ -15,7 +15,7 @@ include("utils.jl")
 
 export Capacitor,
        Ground, Inductor, Resistor, Conductor, Short, IdealOpAmp, EMF,
-       Diode, VariableResistor
+       Diode, VariableResistor, Switch
 include("Analog/ideal_components.jl")
 
 export CurrentSensor, PotentialSensor, VoltageSensor, PowerSensor, MultiSensor

test/Electrical/analog.jl

@@ -413,7 +413,7 @@ end
 
     # Tests
     @test all(diode_current .>= -1e-3)
-    @test capacitor_voltage[end].≈8.26 rtol=3e-1
+    @test capacitor_voltage[end] .≈ 8.26 rtol=3e-1
 
     # For visual inspection
     # plt = plot(sol; idxs = [diode.i, resistor.i, capacitor.v],
@@ -707,3 +707,41 @@ end
         0.0,
         atol = 1e-16)
 end
+
+@testset "Switch test" begin
+    V_value = 10.0
+
+    @mtkmodel SwitchTest begin
+        @parameters begin
+            V = V_value
+            C = 1.0
+            R = 1.0
+        end
+
+        @components begin
+            step = Step(start_time = 10.0, height = true, smooth = false)
+            switch = Switch()
+            voltage = Voltage()
+            resistor = Resistor(R = R)
+            capacitor = Capacitor(C = C, v = 0.0)
+            ground = Ground()
+        end
+
+        @equations begin
+            connect(voltage.p, switch.p)
+            connect(switch.n, resistor.p)
+            connect(resistor.n, capacitor.p)
+            connect(voltage.n, capacitor.n, ground.g)
+            connect(step.output, switch.input)
+            voltage.V.u ~ V
+        end
+    end
+
+    @mtkbuild sys = SwitchTest()
+    prob = ODEProblem(sys, [], (0.0, 25.0))
+    sol = solve(prob, Rodas4())
+
+    @test SciMLBase.successful_retcode(sol)
+    @test isapprox(sol[sys.capacitor.v][end], V_value, atol = 1e-3)
+    @test isapprox(sol[sys.capacitor.i][end], 0.0, atol = 1e-3)
+end