Add tspan tests

Author: YingboMa

test/discretesystem.jl

@@ -52,10 +52,10 @@ eqs2 = [D(S) ~ S - infection2,
     D(I) ~ I + infection2 - recovery2,
     D(R) ~ R + recovery2]
 
-@named sys = DiscreteSystem(eqs2; controls = [β, γ])
+@named sys = DiscreteSystem(eqs2; controls = [β, γ], tspan)
 @test ModelingToolkit.defaults(sys) != Dict()
 
-prob_map2 = DiscreteProblem(sys, [], tspan)
+prob_map2 = DiscreteProblem(sys)
 sol_map2 = solve(prob_map, FunctionMap());
 
 @test sol_map.u == sol_map2.u

test/odesystem.jl

@@ -374,10 +374,11 @@ eqs = [D(D(x)) ~ -b / M * D(x) - k / M * x]
 ps = [M, b, k]
 default_u0 = [D(x) => 0.0, x => 10.0]
 default_p = [M => 1.0, b => 1.0, k => 1.0]
-@named sys = ODESystem(eqs, t, [x], ps, defaults = [default_u0; default_p])
+@named sys = ODESystem(eqs, t, [x], ps; defaults = [default_u0; default_p], tspan)
 sys = ode_order_lowering(sys)
-prob = ODEProblem(sys, [], tspan)
+prob = ODEProblem(sys)
 sol = solve(prob, Tsit5())
+@test sol.t[end] == tspan[end]
 @test sum(abs, sol[end]) < 1
 
 # check_eqs_u0 kwarg test

test/sdesystem.jl

@@ -36,6 +36,7 @@ solexpr = solve(eval(probexpr), SRIW1(), seed = 1)
 
 # Test no error
 @test_nowarn SDEProblem(de, nothing, (0, 10.0))
+@test_nowarn SDEProblem(de)
 
 noiseeqs_nd = [0.01*x 0.01*x*y 0.02*x*z
                σ 0.01*y 0.02*x*z