text: import pytest
  import time
  
  from donkeycar import utils
  from donkeycar.parts.launch import *
  
  
  def test_ai_launch():
      ai_launch = AiLaunch(launch_duration=1.0, launch_throttle=1.0)
  
      mode = "user"
      ai_throttle = 0.0
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 0.0)
  
      mode = "local"
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 0.0)
  
      mode = "user"
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 0.0)
  
      ai_launch.enable_ai_launch()
      mode = "local"
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 1.0)
  
      time.sleep(1.1)
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 0.0)
  
  
  def test_ai_launch_keep_enabled():
      ai_launch = AiLaunch(launch_duration=1.0, launch_throttle=1.0, keep_enabled=True)
  
      mode = "user"
      ai_throttle = 0.0
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 0.0)
  
      mode = "local"
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 1.0)
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      time.sleep(1.1)
  
      new_throttle = ai_launch.run(mode, ai_throttle)
      assert(new_throttle == 0.0)
  
      mode = "user"
  
      new_throttle = ai_launch.run(mode, ai_throttle)
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(ai_launch.enabled==False)
      assert(new_throttle == 0.0)
  
      mode = "local"
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 1.0)
  
      time.sleep(1.1)
  
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      mode = "user"
  
      new_throttle = ai_launch.run(mode, ai_throttle)
      new_throttle = ai_launch.run(mode, ai_throttle)
  
      assert(new_throttle == 0.0)
  
  