code: def test_invalid_shape(self):
      with self.assertRaises(ValueError):
          testing.generate_matrix((2,), singular_values=1)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestGenerateMatrixInvalid obj's underlying member method code with example usage: obj.test_invalid_shape() without return types