test: add test for Tables.jl interface using MTK variable names

Author: AayushSabharwal

test/downstream/tables.jl

@@ -0,0 +1,12 @@
+using ModelingToolkit, OrdinaryDiffEq, Tables, Test
+using ModelingToolkit: t_nounits as t, D_nounits as D
+
+@variables x(t) y(t)
+@parameters p q
+@mtkbuild sys = ODESystem(
+    [D(x) ~ p * x + q * y, 0 ~ y^2 - 2x * y - 4], t, guesses = [y => 1.0])
+prob = ODEProblem(sys, [x => 1.0], (0.0, 5.0), [p => 1.0, q => 2.0])
+sol = solve(prob, Rodas5P())
+
+@test sort(collect(Tables.columnnames(Tables.columns(sol)))) ==
+      [:timestamp, Symbol("x(t)"), Symbol("y(t)")]

test/runtests.jl

@@ -115,6 +115,9 @@ end
         @time @safetestset "ODE Solution Stripping" begin
             include("downstream/ode_stripping.jl")
         end
+        @time @safetestset "Tables interface with MTK" begin
+            include("downstream/tables.jl")
+        end
     end
 
     if !is_APPVEYOR && (GROUP == "Downstream" || GROUP == "SymbolicIndexingInterface")