add some batch tests

Author: ChrisRackauckas

test/enzyme.jl

@@ -27,4 +27,18 @@ db12 = FiniteDiff.finite_difference_gradient(x->f(A,x, b2), copy(b1))
 
 @test dA ≈ dA2
 @test db1 ≈ db12
-@test db2 == zeros(4)
+@test db2 == zeros(4)
+
+A = rand(n, n);
+dA = zeros(n, n);
+dA2 = zeros(n, n);
+b1 = rand(n);
+db1 = zeros(n);
+db12 = zeros(n);
+
+b2 = rand(n);
+db2 = zeros(n);
+db22 = zeros(n);
+
+@test_broken Enzyme.autodiff(Reverse, f, Duplicated(copy(A), dA), BatchDuplicated(copy(b1), (db1, db12)), BatchDuplicated(copy(b2), (db2, db22)))
+@test_broken Enzyme.autodiff(Reverse, f, BatchDuplicated(copy(A), (dA, dA2)), Duplicated(copy(b1), db1), Duplicated(copy(b2), db2))