code: def test_run_context_provider_registry_register():
      provider_class = mock.Mock()
  
      registry = RunContextProviderRegistry()
      registry.register(provider_class)
  
      assert set(registry) == {provider_class.return_value}
  
file_path: mlflow/tests/tracking/context/test_registry.py
imports: from importlib import reload
  from unittest import mock
  import pytest
  import mlflow.tracking.context.registry
  from mlflow.tracking.context.databricks_job_context import DatabricksJobRunContext
  from mlflow.tracking.context.databricks_notebook_context import DatabricksNotebookRunContext
  from mlflow.tracking.context.databricks_repo_context import DatabricksRepoRunContext
  from mlflow.tracking.context.default_context import DefaultRunContext
  from mlflow.tracking.context.git_context import GitRunContext
  from mlflow.tracking.context.registry import RunContextProviderRegistry, resolve_tags
label_desc: Use image node_id 1 for calling a global function with example usage: test_run_context_provider_registry_register() without return types