fix test

Author: ChrisRackauckas

ext/DiffEqBaseForwardDiffExt.jl

@@ -6,7 +6,7 @@ using DiffEqBase: Void, FunctionWrappersWrappers, OrdinaryDiffEqTag, AbstractTim
     RecursiveArrayTools, reduce_tup
 import DiffEqBase: hasdualpromote, wrapfun_oop, wrapfun_iip, prob2dtmin,
                    promote_tspan, anyeltypedual, isdualtype, value, ODE_DEFAULT_NORM,
-                   InternalITP, nextfloat_tdir
+                   InternalITP, nextfloat_tdir, DualEltypeChecker
 
 eltypedual(x) = eltype(x) <: ForwardDiff.Dual
 isdualtype(::Type{<:ForwardDiff.Dual}) = true
@@ -165,11 +165,6 @@ end
 # For other container types, we probably just want to call `mapreduce`
 @inline diffeqmapreduce(f::F, op::OP, x) where {F, OP} = mapreduce(f, op, x, init = Any)
 
-struct DualEltypeChecker{T, T2}
-    x::T
-    counter::T2
-end
-
 getval(::Val{I}) where {I} = I
 getval(::Type{Val{I}}) where {I} = I
 getval(I::Int) = I

src/utils.jl

@@ -123,6 +123,11 @@ end
 end
 @inline __apply_termination_internalnorm(f::F, u) where {F} = f(u)
 
+struct DualEltypeChecker{T, T2}
+    x::T
+    counter::T2
+end
+
 anyeltypedual(x) = anyeltypedual(x, Val{0})
 anyeltypedual(x, counter) = Any