def METHOD_NAME(self):
    """
    Test that the _fixed_plugin_cache changes if we:
      - Change the config
      - Change the version of a plugin
     """
    st = self.get_context(use_per_run_defaults=False)
    # Compute the key/hash under which we will store the plugins
    first_key = st._context_hash()
    assert first_key is not None
    # Change the config triggers a new key
    st.set_config({'bla': 1})
    second_key = st._context_hash()
    # Change the version of a plugin triggers a new key
    st._plugin_class_registry['records'].__version__ = -1
    third_key = st._context_hash()
    assert first_key != second_key != third_key