code: def test_jdbc_format(self):
      db = f"memory:{uuid.uuid4()}"
      url = f"jdbc:derby:{db}"
      dbtable = "test_table"
  
      try:
          df = self.spark.range(10)
          df.write.format("jdbc").options(
              url=f"{url};create=true", dbtable=dbtable
          ).save()
          readback = (
              self.spark.read.format("jdbc")
              .options(url=url, dbtable=dbtable)
              .load()
          )
          self.assertEqual(
              sorted(df.collect()), sorted(readback.collect())
          )
      finally:
          # Clean up.
          with self.assertRaisesRegex(
              Exception, f"Database '{db}' dropped."
          ):
              self.spark.read.format("jdbc").options(
                  url=f"{url};drop=true", dbtable=dbtable
              ).load().collect()
  
imports: import shutil
  import tempfile
  import uuid
  import os
  from pyspark.sql import Row
  from pyspark.sql.types import IntegerType, StructField, StructType, LongType, StringType
  from pyspark.testing.sqlutils import ReusedSQLTestCase
label_desc: Use image node_id 16 for calling the DataSourcesTestsMixin obj's underlying member method code with example usage: obj.test_jdbc_format() without return types