Fix downstream test guess

Author: ChrisRackauckas

test/downstream/Project.toml

@@ -26,7 +26,7 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 BoundaryValueDiffEq = "5"
 ForwardDiff = "0.10"
 JumpProcesses = "9.10"
-ModelingToolkit = "8.37, 9"
+ModelingToolkit = "9"
 ModelingToolkitStandardLibrary = "2.7"
 NonlinearSolve = "2, 3"
 Optimization = "3"

test/downstream/observables_autodiff.jl

@@ -69,7 +69,7 @@ function create_model(; C₁ = 3e-5, C₂ = 1e-6)
         systems = [
             resistor1, resistor2, capacitor1, capacitor2,
             source, input_signal, ground, ampermeter
-        ])
+        ], defaults = [resistor1.n.v => 0.0])
 end
 
 @testset "DAE Observable function AD" begin
@@ -96,7 +96,7 @@ end
 #         # mean(abs.(sol[sys.ampermeter.i] .- gt))
 #         sum(sol[sys.ampermeter.i])
 #     end
-# 
+#
 #     @test isnothing(gs_mtkp)
 #     @test length(gs_p_new) == length(p_new)
 # end