using OrdinaryDiffEq, DiffEqDevTools, Test,
    ODEInterface, ODEInterfaceDiffEq
using OrdinaryDiffEqLowOrderRK: DP5

import ODEProblemLibrary: prob_ode_2Dlinear, prob_ode_linear

prob = prob_ode_linear
sol = solve(prob, DP5())

sol2 = solve(prob, dopri5())
@test sol.t[2] ≈ sol2.t[2]

prob = prob_ode_2Dlinear
sol = solve(prob, DP5(), internalnorm = (u, t) -> sqrt(sum(abs2, u)))

# Change the norm due to error in dopri5.f
sol2 = solve(prob, dopri5())
@test sol.t[2] ≈ sol2.t[2]

prob = deepcopy(prob_ode_linear)
prob2 = ODEProblem(prob.f, prob.u0, (1.0, 0.0), 1.01)
sol = solve(prob2, DP5())

sol2 = solve(prob2, dopri5())
@test sol.t[2] ≈ sol2.t[2]

prob = deepcopy(prob_ode_2Dlinear)
prob2 = ODEProblem(prob.f, prob.u0, (1.0, 0.0), 1.01)
sol = solve(prob2, DP5(), internalnorm = (u, t) -> sqrt(sum(abs2, u)))

# Change the norm due to error in dopri5.f
sol2 = solve(prob2, dopri5())
@test sol.t[2] ≈ sol2.t[2]
