old_contents: from autocache.hashing import argument_hash, bytecode_hash, source_hash
  
  
  def test_callable_hashing():
      """
      Test callable hashing implementations.
      """
      def foo(x):
          return x
  
      def bar(x):
          return x
  
      # assert runtime determinism
      assert bytecode_hash(foo) == bytecode_hash(foo)
      assert source_hash(foo) == source_hash(foo)
  
      # different functions with the same implementation will have the same hash
      assert bytecode_hash(foo) == bytecode_hash(bar)
  
      # but not for source hashing -- the names are different
      assert source_hash(foo) != source_hash(bar)
  
  
  def test_argument_variations():
      """
      Test to ensure that permutations of argument order and/or argument naming
      all reduce to the identical unique hash for the same invocation.
      """
      def foo(bar, baz, *args, **kwargs):
          pass
  
      def check(*keys):
          assert len(set(keys)) == 1
  
      check(
          argument_hash(foo, 1, 2, 3, 4, a=1, b=2, c=3),
          argument_hash(foo, 1, 2, 3, 4, b=2, a=1, c=3),
          argument_hash(foo, 1, 2, 3, 4, b=2, c=3, a=1),
      )
  
      check(
          argument_hash(foo, 1, 2),
          argument_hash(foo, bar=1, baz=2),
          argument_hash(foo, baz=2, bar=1),
          argument_hash(foo, 1, baz=2)
      )
  
new_contents: from autocache.hashing import argument_hash, bytecode_hash, source_hash
  from autocache.utils import convert_dict_to_tuple
  
  
  def test_callable_hashing():
      """
      Test callable hashing implementations.
      """
      def foo(x):
          return x
  
      def bar(x):
          return x
  
      # assert runtime determinism
      assert bytecode_hash(foo) == bytecode_hash(foo)
      assert source_hash(foo) == source_hash(foo)
  
      # different functions with the same implementation will have the same hash
      assert bytecode_hash(foo) == bytecode_hash(bar)
  
      # but not for source hashing -- the names are different
      assert source_hash(foo) != source_hash(bar)
  
  
  def test_argument_variations():
      """
      Test to ensure that permutations of argument order and/or argument naming
      all reduce to the identical unique hash for the same invocation.
      """
      def foo(bar, baz, *args, **kwargs):
          pass
  
      def check(*keys):
          assert len(set(keys)) == 1
  
      check(
          argument_hash(foo, 1, 2, 3, 4, a=1, b=2, c=3),
          argument_hash(foo, 1, 2, 3, 4, b=2, a=1, c=3),
          argument_hash(foo, 1, 2, 3, 4, b=2, c=3, a=1),
          argument_hash(foo, a=1, b=2, c=3, *(1, 2, 3, 4)),
          argument_hash(foo, 1, 2, *(3, 4), **{'a': 1, 'b': 2, 'c': 3}),
      )
  
      check(
          argument_hash(foo, 1, 2),
          argument_hash(foo, bar=1, baz=2),
          argument_hash(foo, baz=2, bar=1),
          argument_hash(foo, 1, baz=2)
      )
  
  
  def test_dictionary_conversion():
      """
      Test converting dictionaries to tuples and ensuring proper key order.
      """
      assert convert_dict_to_tuple({}) == ()
  
      expected = (('a', 1), ('b', 2))
      assert convert_dict_to_tuple({'a': 1, 'b': 2}) == expected
      assert convert_dict_to_tuple({'b': 2, 'a': 1}) == expected
  
subject: add convert_dict_to_tuple test, add more cases to argument hash tests