code: def test_omp_gram_dtype_match(data_type):
      # verify matching input data type and output data type
      coef = orthogonal_mp_gram(
          G.astype(data_type), Xy.astype(data_type), n_nonzero_coefs=5
      )
      assert coef.dtype == data_type
  
imports: import numpy
  import pytest
  from sklearn.datasets import make_sparse_coded_signal
  from sklearn.linear_model import LinearRegression, OrthogonalMatchingPursuit, OrthogonalMatchingPursuitCV, orthogonal_mp, orthogonal_mp_gram
  from sklearn.utils import check_random_state
  from sklearn.utils._testing import assert_allclose, assert_array_almost_equal, assert_array_equal, ignore_warnings
label_desc: Use image node_id 19 for calling a global function with example usage: test_omp_gram_dtype_match(data_type) without return types