code: def test_neg(self):
      # pandas raises "TypeError: bad operand type for unary -: 'FloatingArray'"
      for dtype in self.fractional_extension_dtypes:
          self.assert_eq(
              ps.Series([-0.1, -0.2, -0.3, None], dtype=dtype),
              -ps.Series([0.1, 0.2, 0.3, None], dtype=dtype),
          )
  
imports: import unittest
  import pandas
  import numpy
  from pyspark import pandas
  from pyspark.pandas.config import option_context
  from pyspark.testing.pandasutils import PandasOnSparkTestCase
  from pyspark.pandas.tests.data_type_ops.testing_utils import OpsTestBase
  from pyspark.pandas.typedef.typehints import extension_dtypes_available, extension_float_dtypes_available, extension_object_dtypes_available
  from pyspark.sql.types import DecimalType, IntegralType
label_desc: Use image node_id 7 for calling the FractionalExtensionOpsTest obj's underlying member method code with example usage: obj.test_neg() without return types