code: def test_unique_array_sum_combinations(self):
      A = [1, 2, 3, 3]
      B = [2, 3, 3, 4]
      C = [2, 3, 3, 4]
      target = 7
      answer = [
          (2, 3, 2),
          (3, 2, 2),
          (1, 2, 4),
          (1, 4, 2),
          (2, 2, 3),
          (1, 3, 3),
      ]
      answer.sort()
      self.assertListEqual(
          sorted(unique_array_sum_combinations(A, B, C, target)), answer
      )
  
imports: from algorithms.backtrack import add_operators, permute_iter, anagram, array_sum_combinations, unique_array_sum_combinations, combination_sum, get_factors, recursive_get_factors, find_words, generate_abbreviations, generate_parenthesis_v1, generate_parenthesis_v2, letter_combinations, palindromic_substrings, pattern_match, permute_unique, permute, permute_recursive, subsets_unique, subsets, subsets_v2
  import unittest
label_desc: Use image node_id 2 for calling the TestArrayCombinationSum obj's underlying member method code with example usage: obj.test_unique_array_sum_combinations() without return types