code: def test_get_initial_version():
      assert (
          MajorMinorAssetsVersioningSystem.get_initial_version()
          == "0.0"
      )
      MajorMinorAssetsVersioningSystem.check_version_valid(
          MajorMinorAssetsVersioningSystem.get_initial_version()
      )
  
imports: import os
  import pytest
  import tests
  from modelkit.assets import errors
  from modelkit.assets.settings import AssetSpec
  from modelkit.assets.versioning.major_minor import InvalidMajorVersionError, MajorMinorAssetsVersioningSystem, MajorVersionDoesNotExistError
label_desc: Use image node_id 7 for calling a global function with example usage: test_get_initial_version() without return types