code: def test_error_fro(self, m, m_hat, expected):
      result = metrics.error_fro(m, m_hat)
      print(m, m_hat, result)
      np.testing.assert_array_almost_equal(result, expected)
  
file_path: skggm/inverse_covariance/profiling/tests/metrics_test.py
imports: import numpy
  import pytest
  from inverse_covariance.profiling import metrics
label_desc: Use image node_id 7 for calling the TestMetrics obj's underlying member method code with example usage: obj.test_error_fro(m, m_hat, expected) without return types