code: def test_shared_basic():
      x = pytensor.shared(
          sp.sparse.csr_matrix(np.eye(100), dtype=np.float64),
          name="blah",
          borrow=True,
      )
  
      assert isinstance(x, SparseTensorSharedVariable)
      assert x.format == "csr"
      assert x.dtype == "float64"
  
imports: import numpy
  import scipy
  import pytensor
  from pytensor.sparse.sharedvar import SparseTensorSharedVariable
label_desc: Use image node_id 1 for calling a global function with example usage: test_shared_basic() without return types