Accumulate test improvements

Author: christiangnrd

test/array.jl

@@ -490,7 +490,6 @@ end
 end
 
 @testset "accumulate" begin
-    testf(f, x) = Array(f(MtlArray(x))) ≈ f(x)
     for n in (0, 1, 2, 3, 10, 10_000, 16384, 16384+1) # small, large, odd & even, pow2 and not
         @test testf(x->accumulate(+, x), rand(Float32, n))
         @test testf(x->accumulate(+, x), rand(Float32, n, 2))
@@ -500,17 +499,17 @@ end
     # multidimensional
     for (sizes, dims) in ((2,) => 2,
                           (3,4,5) => 2,
-                          (1, 70, 50, 20) => 3)
-        @test testf(x->accumulate(+, x; dims=dims), rand(Int, sizes))
-        @test testf(x->accumulate(+, x), rand(Int, sizes))
+                          (1, 70, 50, 20) => 3,)
+        @test testf(x->accumulate(+, x; dims=dims), rand(-10:10, sizes))
+        @test testf(x->accumulate(+, x), rand(-10:10, sizes))
     end
 
     # using initializer
     for (sizes, dims) in ((2,) => 2,
                           (3,4,5) => 2,
                           (1, 70, 50, 20) => 3)
-        @test testf(Base.Fix2((x,y)->accumulate(+, x; dims=dims, init=y), rand(Int)), rand(Int, sizes))
-        @test testf(Base.Fix2((x,y)->accumulate(+, x; init=y), rand(Int)), rand(Int, sizes))
+        @test testf(Base.Fix2((x,y)->accumulate(+, x; dims=dims, init=y), rand(-10:10)), rand(-10:10, sizes))
+        @test testf(Base.Fix2((x,y)->accumulate(+, x; init=y), rand(-10:10)), rand(-10:10, sizes))
     end
 
     # in place