using OrdinaryDiffEq, Test
f(u,p,t) = 1.01*u
u0=1/2
tspan = (0.0,Inf)
prob = ODEProblem(f,u0,tspan)

# Shouldn't error, but should go unstable and abort
sol = solve(prob,Tsit5(),reltol=1e-8,abstol=1e-8,adaptive=false,dt=0.1)
@test sol.retcode == :Unstable
