test: fix tests

Author: AayushSabharwal

test/initializationsystem.jl

@@ -28,7 +28,7 @@ sol = solve(initprob)
 
 initprob = ModelingToolkit.InitializationProblem(pend, 0.0, [x => 1, y => 0], [g => 1];
     guesses = ModelingToolkit.missing_variable_defaults(pend))
-@test initprob isa NonlinearProblem
+@test initprob isa NonlinearLeastSquaresProblem
 sol = solve(initprob)
 @test SciMLBase.successful_retcode(sol)
 @test sol.u == [0.0, 0.0, 0.0, 0.0]

test/split_parameters.jl

@@ -206,7 +206,7 @@ S = get_sensitivity(closed_loop, :u)
             BlockedArray([[1 2; 3 4], [2 4; 6 8]], [1, 1])),
         # (BlockedArray([[true, false], [false, true]]), BlockedArray([[[1 2; 3 4]], [[2 4; 6 8]]])),
         ([5, 6],),
-        (["hi", "bye"], [:lie, :die]))
+        (["hi", "bye"], [:lie, :die]), ())
     @test ps[ParameterIndex(Tunable(), 1)] == 1.0
     @test ps[ParameterIndex(Tunable(), 2:4)] == collect(2.0:4.0)
     @test ps[ParameterIndex(Tunable(), reshape(4:7, 2, 2))] == reshape(4.0:7.0, 2, 2)