properly test allocs

Author: ChrisRackauckas

test/static/static_checks.jl

@@ -1,5 +1,5 @@
-using DiffEqBase, ComponentArrays, AllocCheck
+using DiffEqBase, ComponentArrays, AllocCheck, Test
 
 u = ComponentArray(x=1.0, y=0.0, z=0.0)
 t = 0.0
-@test @allocated(DiffEqBase.ODE_DEFAULT_NORM(u, t)) < 20
+@test length(check_allocs(DiffEqBase.ODE_DEFAULT_NORM, (typeof(u), typeof(t)))) == 0