code: def test_aggregate(self):
      pser = pd.Series([10, 20, 15, 30, 45], name="x")
      psser = ps.Series(pser)
      msg = "func must be a string or list of strings"
      with self.assertRaisesRegex(TypeError, msg):
          psser.aggregate({"x": ["min", "max"]})
      msg = (
          "If the given function is a list, it "
          "should only contains function names as strings."
      )
      with self.assertRaisesRegex(ValueError, msg):
          psser.aggregate(["min", max])
  
imports: import unittest
  from itertools import product
  import numpy
  import pandas
  from pyspark import pandas
  from pyspark.errors import PySparkValueError
  from pyspark.testing.pandasutils import ComparisonTestBase
  from pyspark.testing.sqlutils import SQLTestUtils
label_desc: Use image node_id 8 for calling the SeriesComputeMixin obj's underlying member method code with example usage: obj.test_aggregate() without return types