code: def test_call_git_call_git_items_identity(temp_dir=None):
      # Ensure that git_call() and "".join(call_git_items_(..., keep_ends=True))
      # yield the same result and that the result is identical to the file content
  
      repo, hash_keys = _create_test_gitrepo(temp_dir)
      args = ["cat-file", "-p"]
      for hash_key, content in zip(
          hash_keys, (file1_content, file2_content)
      ):
          r_item = "".join(
              repo.call_git_items_(args + [hash_key], keep_ends=True)
          )
          r_no_item = repo.call_git(args, [hash_key])
          assert_equal(r_item, r_no_item)
          assert_equal(r_item, content)
  
imports: import logging
  import os
  import os.path
  import sys
  from datalad.dataset.gitrepo import GitRepo, _get_dot_git
  from datalad.support.exceptions import CommandError, PathKnownToRepositoryError
  from datalad.tests.utils_pytest import SkipTest, assert_cwd_unchanged, assert_equal, assert_false, assert_in, assert_is_instance, assert_not_in, assert_raises, eq_, neq_, ok_, swallow_logs, with_tempfile, with_tree
  from datalad.utils import Path, chpwd
label_desc: Use image node_id 13 for calling a global function with example usage: test_call_git_call_git_items_identity(temp_dir) without return types