better grid for test

test/test_objective.jl

@@ -58,13 +58,13 @@ constraint!(ocp4, :initial, [0,0], :initial_constraint)
 constraint!(ocp4, :final, [1,0], :final_constraint)
 constraint!(ocp4, :control, -1, 1, :control_constraint)
 constraint!(ocp4, :variable, [0.1, 0.1], [10, 10], :variable_constraint)
-constraint!(ocp4, :variable, v -> v[2]-v[1], 1.0, Inf )
+constraint!(ocp4, :variable, v -> v[2]-v[1], 0.1, Inf )
 dynamics!(ocp4, (x, u, v) ->  [x[2], u])
 objective!(ocp4, :mayer, (x0, xf, v) -> v[1], :max)
 sol4 = solve(ocp4, grid_size=100, print_level=0, tol=1e-12)
 println("Target 8.0, found ", sol4.objective)
 
 # with non uniform grid
-sol5 = solve(ocp4, time_grid=[0,0.1,0.6,0.95,1], print_level=5, tol=1e-12)
+sol5 = solve(ocp4, time_grid=[0,0.1,0.3,0.5,0.6,0.8,0.95,1], print_level=5)
 plot(sol5, show=true)
 println("Target 8.0, found ", sol5.objective)