Remove redundant tests

Author: YingboMa

test/components.jl

@@ -81,7 +81,7 @@ rc_eqs = [
          ]
 
 rc_model = ODESystem(rc_eqs, t, systems=[resistor, capacitor, source, ground], name=:rc)
-sys = alias_elimination(rc_model)
+sys = structural_simplify(rc_model)
 @test ModelingToolkit.default_p(sys) == Dict(
                                              capacitor.C => 1.0,
                                              source.V => 1.0,
@@ -95,6 +95,15 @@ u0 = [
 prob = ODEProblem(sys, u0, (0, 10.0))
 sol = solve(prob, Rodas4())
 
+@test sol[resistor.p.i] == sol[capacitor.p.i]
+@test sol[resistor.n.i] == -sol[capacitor.p.i]
+@test sol[capacitor.n.i] == -sol[capacitor.p.i]
+@test iszero(sol[ground.g.i])
+@test iszero(sol[ground.g.v])
+
+prob = ODAEProblem(sys, u0, (0, 10.0))
+sol = solve(prob, Rodas4())
+
 @test sol[resistor.p.i] == sol[capacitor.p.i]
 @test sol[resistor.n.i] == -sol[capacitor.p.i]
 @test sol[capacitor.n.i] == -sol[capacitor.p.i]

test/dep_graphs.jl

@@ -102,39 +102,3 @@ ns = NonlinearSystem(eqs, [x,y,z],[σ,ρ,β])
 deps = equation_dependencies(ns)
 eq_sdeps = [[x,y],[y],[y,z]]
 @test all(i -> isequal(Set(deps[i]),Set(value.(eq_sdeps[i]))), 1:length(deps))
-
-using SparseArrays
-using ModelingToolkit
-using UnPack
-
-# Define some variables
-@parameters t L g
-@variables x(t) y(t) w(t) z(t) T(t)
-D = Differential(t)
-
-# Simple pendulum in cartesian coordinates
-eqs = [D(x) ~ w,
-       D(y) ~ z,
-       D(w) ~ T*x,
-       D(z) ~ T*y - g,
-       0 ~ x^2 + y^2 - L^2]
-pendulum = ODESystem(eqs, t, [x, y, w, z, T], [L, g], name=:pendulum)
-sys = initialize_system_structure(pendulum)
-sss = structure(sys)
-@unpack graph, fullvars, varassoc = sss
-@test isequal(fullvars, [x, y, w, z, D(x), D(y), D(w), D(z), T])
-@test graph.fadjlist == sort.([[5, 3], [6, 4], [7, 1, 9], [8, 2, 9], [2, 1]])
-@test graph.badjlist == sort.([[3, 5], [4, 5], [1], [2], [1], [2], [3], [4], [3, 4]])
-@test LightGraphs.ne(graph) == nnz(incidence_matrix(graph)) == 12
-@test varassoc == [5, 6, 7, 8, 0, 0, 0, 0, 0]
-
-se = collect(ModelingToolkit.𝑠edges(graph))
-@test se == mapreduce(vcat, enumerate(graph.fadjlist)) do (s, d)
-    ModelingToolkit.BipartiteEdge.(s, d)
-end
-de = collect(ModelingToolkit.𝑑edges(graph))
-@test de == mapreduce(vcat, enumerate(graph.badjlist)) do (d, s)
-    ModelingToolkit.BipartiteEdge.(s, d)
-end
-ae = collect(ModelingToolkit.edges(graph))
-@test ae == vcat(se, de)

test/structural_transformation/components.jl

@@ -3,4 +3,3 @@ using SafeTestsets
 @safetestset "Utilities" begin include("utils.jl") end
 @safetestset "Index Reduction & SCC" begin include("index_reduction.jl") end
 @safetestset "Tearing" begin include("tearing.jl") end
-@safetestset "Components" begin include("components.jl") end