HyukjinKwon commented on a change in pull request #24752:
[SPARK-27893][SQL][PYTHON] Create an integrated test base for Python, Scalar
Pandas, Scala UDF by sql files
URL: https://github.com/apache/spark/pull/24752#discussion_r289624749
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestSuite.scala
##########
@@ -442,3 +519,172 @@ class SQLQueryTestSuite extends QueryTest with
SharedSQLContext {
}
}
}
+
+
+/**
+ * This object targets to integrate various UDF test cases so that Scalar UDF,
Python UDF and
+ * Scalar Pandas UDFs can be tested in SBT & Maven tests.
+ *
+ * The available UDFs cast input to strings and take one column as input with
a string type
+ * column as output.
+ *
+ * To register Scala UDF in SQL:
+ * {{{
+ * IntegratedUDFTestUtils.registerTestUDF(new TestScalaUDF, spark)
+ * }}}
+ *
+ * To register Python UDF in SQL:
+ * {{{
+ * IntegratedUDFTestUtils.registerTestUDF(new TestPythonUDF, spark)
+ * }}}
+ *
+ * To register Scalar Pandas UDF in SQL:
+ * {{{
+ * IntegratedUDFTestUtils.registerTestUDF(new TestScalarPandasUDF, spark)
+ * }}}
+ *
+ * To use it in Scala API and SQL:
+ * {{{
+ * sql("SELECT udf(1)")
+ * spark.select(expr("udf(1)")
+ * }}}
+ *
+ * They are currently registered as the name 'udf' in function registry.
+ */
+object IntegratedUDFTestUtils extends SQLHelper with Logging {
+ import scala.sys.process._
+
+ lazy val pythonExec: String = {
+ val pythonExec = sys.env.getOrElse("PYSPARK_PYTHON", "python3.6")
Review comment:
`python3.6` is being used in Jenkins .. I think it's better to match it with
PySpark test side.
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