code: def generate_inputs(self):
      x_shape = self.x_shape
      w_shape = self.w_shape
      b_shape = self.b_shape
      if len(self.in_dtypes) == 3:
          x_dtype, w_dtype, b_dtype = self.in_dtypes
      else:
          (x_dtype, w_dtype), b_dtype = self.in_dtypes, None
      x = array_utils.uniform(x_shape, x_dtype)
      w = array_utils.uniform(w_shape, w_dtype)
      if b_shape in (None, Unspecified):
          return x, w
      else:
          b = array_utils.uniform(b_shape, b_dtype)
          return x, w, b
  
imports: import unittest
  import chainer
  from chainer import functions
  import numpy
  import pytest
  import chainerx
  from chainerx_tests import array_utils
  from chainerx_tests import dtype_utils
  from chainerx_tests import op_utils
label_desc: Use image node_id 2 for calling the TestLinear obj's underlying member method code with example usage: obj.generate_inputs() and returns: x,  w, x,  w,  b