Monotonic interpolations

test/gradient.jl

@@ -194,7 +194,6 @@ using Test, Interpolations, DualNumbers, LinearAlgebra
                 for t in grid
                     gradval = epsilon(itp(dual(t, 1.0)))
                     @test Interpolations.gradient1(itp, t) ≈ gradval atol = 1.e-12
-                    @test Interpolations.gradient(itp, [t])[1] ≈ gradval atol = 1.e-12
                 end
             end
         end

test/hessian.jl

@@ -65,7 +65,6 @@ using Test, Interpolations, LinearAlgebra, ForwardDiff
                 for t in grid
                     hessval = ForwardDiff.hessian(u -> itp(u[1]), [t])[1, 1]
                     @test Interpolations.hessian1(itp, t) ≈ hessval atol = 1.e-12
-                    @test Interpolations.hessian(itp, [t])[1] ≈ hessval atol = 1.e-12
                 end
             end
         end