Fix up tests that don't work because of move

Author: oxinabox

src/ChainRulesTestUtils.jl

@@ -11,7 +11,7 @@ using Test
 
 export TestIterator
 export test_approx, test_scalar, test_frule, test_rrule, generate_well_conditioned_matrix
-export ⊢
+export ⊢, rand_tangent
 export @maybe_inferred
 
 __init__() = init_test_inferred_setting!()

test/iterator.jl

@@ -88,7 +88,7 @@
     @testset "rand_tangent" begin
         data = randn(2, 3, 4)
         iter = TestIterator(data, Base.SizeUnknown(), Base.EltypeUnknown())
-        ∂iter = FiniteDifferences.rand_tangent(iter)
+        ∂iter = rand_tangent(iter)
         @test ∂iter isa typeof(iter)
         @test size(∂iter.data) == size(iter.data)
         @test eltype(∂iter.data) === eltype(iter.data)

test/rand_tangent.jl

@@ -1,6 +1,10 @@
-using FiniteDifferences: rand_tangent
-
-@testset "generate_tangent" begin
+# Test struct for `rand_tangent` and `difference`.
+struct Bar
+    a::Float64
+    b::Int
+    c::Any
+ end
+@testset "rand_tangent" begin
     rng = MersenneTwister(123456)
 
     @testset "Primal: $(typeof(x)), Tangent: $T_tangent" for (x, T_tangent) in [
@@ -13,9 +17,9 @@ using FiniteDifferences: rand_tangent
         (4, NoTangent),
         (FiniteDifferences, NoTangent),  # Module object
         # Types (not instances of type)
-        (Foo, NoTangent),  
-        (Union{Int, Foo}, NoTangent),
-        (Union{Int, Foo}, NoTangent),
+        (Bar, NoTangent),  
+        (Union{Int, Bar}, NoTangent),
+        (Union{Int, Bar}, NoTangent),
         (Vector, NoTangent),
         (Vector{Float64}, NoTangent),
         (Integer, NoTangent),
@@ -49,8 +53,8 @@ using FiniteDifferences: rand_tangent
         ((a=5.0, b=1), Tangent{NamedTuple{(:a, :b), Tuple{Float64, Int}}}),
 
         # structs.
-        (Foo(5.0, 4, rand(rng, 3)), Tangent{Foo}),
-        (Foo(4.0, 3, Foo(5.0, 2, 4)), Tangent{Foo}),
+        (Bar(5.0, 4, rand(rng, 3)), Tangent{Bar}),
+        (Bar(4.0, 3, Bar(5.0, 2, 4)), Tangent{Bar}),
         (sin, NoTangent),
         # all fields NoTangent implies NoTangent
         (Pair(:a, "b"), NoTangent),
@@ -66,14 +70,6 @@ using FiniteDifferences: rand_tangent
             Diagonal(randn(2)),
             Tangent{Diagonal{Float64, Vector{Float64}}},
         ),
-        (
-            SVector{2, Float64}(1.0, 2.0),
-            Tangent{typeof(SVector{2, Float64}(1.0, 2.0))},
-        ),
-        (
-            SMatrix{2, 2, ComplexF64}(1.0, 2.0, 3.0, 4.0),
-            Tangent{typeof(SMatrix{2, 2, ComplexF64}(1.0, 2.0, 3.0, 4.0))},
-        ),
         (
             Symmetric(randn(2, 2)),
             Tangent{Symmetric{Float64, Matrix{Float64}}},
@@ -93,7 +89,7 @@ using FiniteDifferences: rand_tangent
     end
 
     @testset "compsition of addition" begin
-        x = Foo(1.5, 2, Foo(1.1, 3, [1.7, 1.4, 0.9]))
+        x = Bar(1.5, 2, Bar(1.1, 3, [1.7, 1.4, 0.9]))
         @test x + rand_tangent(x) isa typeof(x)
         @test x + (rand_tangent(x) + rand_tangent(x)) isa typeof(x)
     end