fix: minor test fixes

Author: avik-pal

src/internal/jacobian.jl

@@ -99,10 +99,15 @@ function JacobianCache(prob, alg, f::F, fu_, u, p; stats, autodiff = nothing,
                 # While this is technically wasteful, it gives out the type of the Jacobian
                 # which is needed to create the linear solver cache
                 stats.njacs += 1
-                if iip
-                    DI.jacobian(f, fu, di_extras, autodiff, u, Constant(p))
+                if has_analytic_jac
+                    __similar(
+                        fu, promote_type(eltype(fu), eltype(u)), length(fu), length(u))
                 else
-                    DI.jacobian(f, autodiff, u, Constant(p))
+                    if iip
+                        DI.jacobian(f, fu, di_extras, autodiff, u, Constant(p))
+                    else
+                        DI.jacobian(f, autodiff, u, Constant(p))
+                    end
                 end
             else
                 zero(init_jacobian(sdifft_extras; preserve_immutable = Val(true)))

test/misc/bruss_tests.jl

@@ -73,6 +73,6 @@
 
     cache = init(
         prob_brusselator_2d, NewtonRaphson(; autodiff = AutoSparse(AutoForwardDiff())))
-    @test maximum(cache.sdifft_extras.jac_cache.coloring.colorvec) == 12
-    @test cache.sdifft_extras.autodiff isa AutoSparse{<:AutoForwardDiff}
+    @test maximum(cache.jac_cache.sdifft_extras.coloring.colorvec) == 12
+    @test cache.jac_cache.autodiff isa AutoSparse{<:AutoForwardDiff}
 end