Add Mooncake to tested AD backends

Author: simsurace

test/Project.toml

@@ -13,6 +13,7 @@ ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 Kronecker = "2c470bb0-bcc8-11e8-3dad-c9649493f05e"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 LogExpFunctions = "2ab3a3ac-af41-5b50-aa03-7779005ae688"
+Mooncake = "da2b9cff-9c12-43a0-ae48-6db2b0edb7d6"
 PDMats = "90014a1f-27ba-587c-ab20-58faa44d9150"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 ReverseDiff = "37e2e3b7-166d-5795-8a7a-e32c996b4267"
@@ -39,4 +40,5 @@ ReverseDiff = "1.2"
 SpecialFunctions = "0.10, 1, 2"
 StaticArrays = "1"
 Statistics = "1"
+Mooncake = "0.5"
 Zygote = "0.6.38"

test/runtests.jl

@@ -18,7 +18,8 @@ using ForwardDiff: ForwardDiff
 using ReverseDiff: ReverseDiff
 using FiniteDifferences: FiniteDifferences
 using Compat: only
-using ADTypes: AutoForwardDiff, AutoReverseDiff, AutoZygote, AutoFiniteDifferences
+using Mooncake: Mooncake
+using ADTypes: AutoForwardDiff, AutoReverseDiff, AutoZygote, AutoFiniteDifferences, AutoMooncake, AutoEnzyme
 using DifferentiationInterface: DifferentiationInterface as DI
 using DifferentiationInterfaceTest: Scenario, test_differentiation
 

test/test_utils.jl

@@ -25,7 +25,7 @@ testdiagfunction(k::MOKernel, A, B) = sum(kernelmatrix_diag(k, A, B))
 const FD_BACKEND = AutoFiniteDifferences(; fdm=FDM)
 
 const _DEFAULT_BACKENDS = let
-    backends = [AutoForwardDiff(), AutoReverseDiff()]
+    backends = [AutoForwardDiff(), AutoReverseDiff(), AutoMooncake()]
     _TEST_ZYGOTE && pushfirst!(backends, AutoZygote())
     backends
 end
@@ -34,6 +34,7 @@ const _BACKEND_MAP = Dict{Symbol,Any}(
     :ForwardDiff => AutoForwardDiff(),
     :ReverseDiff => AutoReverseDiff(),
     :Zygote => AutoZygote(),
+    :Mooncake => AutoMooncake(),
     :FiniteDiff => FD_BACKEND,
 )