test: separate out DiffEqIndexing into SII testset

Author: AayushSabharwal

test/runtests.jl

@@ -24,7 +24,6 @@ end
         @time @safetestset "NamedArrayPartition Tests" include("named_array_partition_tests.jl")
         @time @safetestset "Partitions Tests" include("partitions_test.jl")
         @time @safetestset "VecOfArr Indexing Tests" include("basic_indexing.jl")
-        @time @safetestset "SymbolicIndexingInterface API test" include("symbolic_indexing_interface_test.jl")
         @time @safetestset "VecOfArr Interface Tests" include("interface_tests.jl")
         @time @safetestset "Table traits" include("tabletraits.jl")
         @time @safetestset "StaticArrays Tests" include("copy_static_array_test.jl")
@@ -33,15 +32,25 @@ end
         @time @safetestset "Measurement Tests" include("measurements.jl")
     end
 
+    if GROUP == "SymbolicIndexingInterface" || GROUP == "All"
+        @time @safetestset "SymbolicIndexingInterface API test" include("symbolic_indexing_interface_test.jl")
+    end
+
     if GROUP == "Downstream"
         activate_downstream_env()
-        @time @safetestset "DiffEqArray Indexing Tests" include("downstream/symbol_indexing.jl")
         @time @safetestset "ODE Solve Tests" include("downstream/odesolve.jl")
         @time @safetestset "Event Tests with ArrayPartition" include("downstream/downstream_events.jl")
         @time @safetestset "Measurements and Units" include("downstream/measurements_and_units.jl")
         @time @safetestset "TrackerExt" include("downstream/TrackerExt.jl")
     end
 
+    if GROUP == "SymbolicIndexingInterface" || GROUP == "Downstream"
+        if GROUP == "SymbolicIndexingInterface"
+            activate_downstream_env()
+            @time @safetestset "DiffEqArray Indexing Tests" include("downstream/symbol_indexing.jl")
+        end
+    end
+
     if GROUP == "GPU"
         activate_gpu_env()
         @time @safetestset "VectorOfArray GPU" include("gpu/vectorofarray_gpu.jl")