def METHOD_NAME(self):
    """
    Verify the correct value is produced when comparing matrices.
    """
    # Note that first row contains header in first column, while the
    # second contains only values (for testing purposes)
    matrix1 = [["header", 51.7, 60], [1, 0, 0]]
    matrix2 = [["header", 57.2, 54], [2, 51, 0]]
    self.assertEqual(
        data_structures.compare_matrices(matrix1, matrix2),
        ([["header", "+10.6383", -10.0], ["+100", "error_51/0", "."]], 3, 1, 5),
    )