Github user zero323 commented on a diff in the pull request:
https://github.com/apache/spark/pull/16536#discussion_r98093311
--- Diff: python/pyspark/sql/tests.py ---
@@ -476,6 +476,19 @@ def test_udf_defers_judf_initalization(self):
"judf should be initialized after UDF has been called."
)
+ @unittest.skipIf(sys.version_info < (3, 3), "Unittest < 3.3 doesn't
support mocking")
--- End diff --
```python
class UDFInitializationTestCase(unittest.TestCase):
def tearDown(self):
if SparkSession._instantiatedSession is not None:
SparkSession._instantiatedSession.stop()
if SparkContext._active_spark_context is not None:
SparkContext._active_spark_contex.stop()
def test_udf_context_access(self):
from pyspark.sql.functions import UserDefinedFunction
f = UserDefinedFunction(lambda x: x, StringType())
self.assertIsNone(SparkContext._active_spark_context)
self.assertIsNone(SparkSession._instantiatedSession)
```
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