@testset "Monotonic Basin Hopping" begin

  using PlotlyJS, NLsolve, Dates

  println("Testing Monotonic Basin Hopper")

  # First we test the random mission guess generator
  flybys = [Earth, Venus, Jupiter]
  launch_window = ( DateTime(2021,12,25), DateTime(2025,12,25) )
  max_C3 = 10.
  max_v∞ = 8.
  latest_arrival = DateTime(2035,12,25)
  random_guess = Thesis.mission_guess(flybys, bepi, 12_000., launch_window, max_C3, max_v∞, latest_arrival)
  @test typeof(random_guess) == Mission_Guess
  
  # Then the perturb function
  mission_guess = Thesis.perturb(test_mission)
  @test mission_guess.launch_date != test_mission.launch_date
  @test mission_guess.launch_v∞ != test_mission.launch_v∞
  for i in 1:2
    @test mission_guess.phases[i].v∞_in != test_mission.phases[i].v∞_in
    @test mission_guess.phases[i].δ != test_mission.phases[i].δ
    @test mission_guess.phases[i].tof != test_mission.phases[i].tof
  end
  @test !mission_guess.converged
  
  # # Then the inner loop builder function
  mission = Thesis.inner_loop_solve(test_mission_guess)
  @test !mission.converged

  # For the valid case we need to use a lambert's solver
  # TODO: This is probably not acceptable for how close I have to be
  leave = DateTime(1992,11,19)
  arrive = DateTime(1993,4,1)
  time_leave = utc2et(Dates.format(leave,"yyyy-mm-ddTHH:MM:SS"))
  time_arrive = utc2et(Dates.format(arrive,"yyyy-mm-ddTHH:MM:SS"))
  earth_state = [spkssb(Earth.id, time_leave, "ECLIPJ2000"); 0.0]
  venus_state = [spkssb(Venus.id, time_arrive, "ECLIPJ2000"); 0.0]
  v∞_out, v∞_in, tof = Thesis.lamberts(Earth, Venus, leave, arrive)
  phase = Phase(Venus, 1.01v∞_in, 0.2, tof, 0.01*ones(20,3))
  mission_guess = Mission_Guess(bepi, 12_000., leave, v∞_out, [phase])
  mission = Thesis.inner_loop_solve(mission_guess)
  @test mission.converged
  if !mission.converged println(mission.message) end

end