Fix tests

Author: YingboMa

src/structural_transformation/symbolics_tearing.jl

@@ -125,6 +125,7 @@ function tearing_substitution(sys::AbstractSystem; kwargs...)
     neweqs = full_equations(sys::AbstractSystem; kwargs...)
     @set! sys.eqs = neweqs
     @set! sys.substitutions = nothing
+    @set! sys.schedule = nothing
 end
 
 function tearing_assignments(sys::AbstractSystem)

test/initial_values.jl

@@ -116,6 +116,6 @@ end
 @variables x(t)
 @parameters p
 @mtkbuild sys = ODESystem([D(x) ~ p], t; defaults = [x => t, p => 2t])
-prob = ODEProblem(structural_simplify(sys), [], (1.0, 2.0), [])
+prob = ODEProblem(sys, [], (1.0, 2.0), [])
 @test prob[x] == 1.0
 @test prob.ps[p] == 2.0

test/symbolic_events.jl

@@ -353,8 +353,9 @@ continuous_events = [[x ~ 0] => [vx ~ -vx]
      D(vx) ~ -9.8
      D(vy) ~ -0.01vy], t; continuous_events)
 
-ball = structural_simplify(ball)
-ball_nosplit = structural_simplify(ball; split = false)
+_ball = ball
+ball = structural_simplify(_ball)
+ball_nosplit = structural_simplify(_ball; split = false)
 
 tspan = (0.0, 5.0)
 prob = ODEProblem(ball, Pair[], tspan)