docstr: Tests libmxnet.meta is properly written out
docstr_tok: ["Tests","libmxnet.meta","is","properly","written","out"]
code: def test_write_libmxnet_meta(self):
      """
      Tests libmxnet.meta is properly written out
      """
      mock_fopen = mock_open()
      with patch("artifact_repository.open", mock_fopen, create=True):
          fake_args = (
              TestArtifactRepositoryTool.create_argparse_namespace(
                  git_sha="abcd1234",
                  variant="gpu",
                  operating_system="lunix",
                  libtype="stynamic",
              )
          )
          write_libmxnet_meta(args=fake_args, destination="dest")
          mock_fopen.assert_called_once_with(
              os.path.join("dest", "libmxnet.meta"), "w"
          )
          mock_fopen().write.called_with(
              "commit_id: abcd1234\ndependency_linking: stynamic\nos: lunix\nvariant: gpu\n"
          )
  
imports: import unittest
  from unittest.mock import MagicMock, mock_open, patch
  from artifact_repository import *
label_desc: Use image node_id 39 for calling the TestArtifactRepositoryTool obj's underlying member method code with example usage: obj.test_write_libmxnet_meta() without return types