code: def test_start_state_looks_at_cache():
      dsk = {"b": (inc, "a")}
      cache = {"a": 1}
      result = start_state_from_dask(dsk, cache)
      assert result["dependencies"]["b"] == {"a"}
      assert result["ready"] == ["b"]
  
imports: from __future__ import annotations
  import pytest
  import dask
  from dask.local import finish_task, get_sync, sortkey, start_state_from_dask
  from dask.order import order
  from dask.utils_test import GetFunctionTestMixin, add, inc
label_desc: Use image node_id 2 for calling a global function with example usage: test_start_state_looks_at_cache() without return types