class_docstr: Tests the flatten and unflatten functions
class_docstr_tok: ["Tests","the","flatten","and","unflatten","functions"]
docstr: Tests that _flatten successfully flattens multidimensional arrays.
docstr_tok: ["Tests","that","_flatten","successfully","flattens","multidimensional","arrays","."]
code: def test_flatten(self, shape):
      """Tests that _flatten successfully flattens multidimensional arrays."""
  
      reshaped = np.reshape(flat_dummy_array, shape)
      flattened = np.array(list(pu._flatten(reshaped)))
  
      assert flattened.shape == flat_dummy_array.shape
      assert np.array_equal(flattened, flat_dummy_array)
  
imports: import functools
  import itertools
  import pytest
  import numpy
  import pennylane
  import pennylane.utils
label_desc: Use image node_id 1 for calling the TestFlatten obj's underlying member method code with example usage: obj.test_flatten(shape) without return types