add whitespaces

Author: tam724

test/diagonal.jl

@@ -1396,15 +1396,15 @@ end
 end
 
 @testset "kron! for Diagonal" begin
-    a = Diagonal([1,2])
-    b = Diagonal([3,4])
+    a = Diagonal([1, 2])
+    b = Diagonal([3, 4])
     # Diagonal out
-    c = Diagonal([0,0,0,0])
-    kron!(c,b,a)
+    c = Diagonal([0, 0, 0, 0])
+    kron!(c, b, a)
     @test c == Diagonal([3, 6, 4, 8])
     @test c == kron!(fill(0, 4, 4), Matrix(b), Matrix(a)) # against dense kron!
-    c=Diagonal(Vector{Float64}(undef, 4))
-    kron!(c,a,b)
+    c = Diagonal(Vector{Float64}(undef, 4))
+    kron!(c, a, b)
     @test c == Diagonal([3.0, 4.0, 6.0, 8.0])
 
     # AbstractArray out