code: def test_simple2(self):
      # arrange
      trees = [0, 3, 5, 5, 6, 9]
      L = 10
      W = 1
  
      # act
      res = planting_trees(trees, L, W)
  
      # assert
      self.assertEqual(res, 9.28538328578604)
  
imports: from algorithms.dp import max_profit_naive, max_profit_optimized, climb_stairs, climb_stairs_optimized, count, combination_sum_topdown, combination_sum_bottom_up, edit_distance, egg_drop, fib_recursive, fib_list, fib_iter, hosoya_testing, house_robber, Job, schedule, Item, get_maximum_value, longest_increasing_subsequence, longest_increasing_subsequence_optimized, longest_increasing_subsequence_optimized2, int_divide, find_k_factor, planting_trees, regex_matching
  import unittest
label_desc: Use image node_id 2 for calling the TestPlantingTrees obj's underlying member method code with example usage: obj.test_simple2() without return types