Update test/interface_tests.jl

Author: ChrisRackauckas

test/interface_tests.jl

@@ -126,6 +126,16 @@ z .= x .+ y
 
 @test z == VectorOfArray([fill(4, SVector{2, Float64}), fill(2, SVector{2, Float64})])
 
+u1 = VectorOfArray([fill(2, SVector{2, Float64}), ones(SVector{2, Float64})])
+u2 = VectorOfArray([fill(4, SVector{2, Float64}), 2 .* ones(SVector{2, Float64})])
+u3 = VectorOfArray([fill(4, SVector{2, Float64}), 2 .* ones(SVector{2, Float64})])
+
+function f(u1,u2,u3)
+    u3 .= u1 .+ u2
+end
+f(u1,u2,u3)
+@test@allocated f(u1,u2,u3) == 0 
+
 yy = [2.0 1.0; 2.0 1.0]
 zz = x .+ yy
 @test zz == [4.0 2.0; 4.0 2.0]