[GitHub] [spark] BryanCutler commented on a change in pull request #24650: [SPARK-27778][PySpark] Fix toPandas conversion using arrow for DFs with no partitions

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BryanCutler commented on a change in pull request #24650: [SPARK-27778][PySpark] Fix toPandas conversion using arrow for DFs with no partitions
URL: https://github.com/apache/spark/pull/24650#discussion_r285792024
 
 

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 File path: python/pyspark/sql/tests/test_arrow.py
 ##########
 @@ -183,6 +183,13 @@ def test_filtered_frame(self):
         self.assertEqual(pdf.columns[0], "i")
         self.assertTrue(pdf.empty)
 
+    def test_no_partition_frame(self):
+        schema = StructType([StructField("field1", StringType(), True)])
+        df = self.spark.createDataFrame(self.sc.emptyRDD(), schema)
+        pdf = df.toPandas()
+        self.assertEqual(len(pdf.columns), 1)
 
 Review comment:
   Could you also add an assert that the column name is correct?

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