Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/8116#discussion_r36822766
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/UnsafeRowSerializerSuite.scala
---
@@ -25,6 +25,18 @@ import
org.apache.spark.sql.catalyst.{CatalystTypeConverters, InternalRow}
import org.apache.spark.sql.catalyst.expressions.{UnsafeProjection,
UnsafeRow}
import org.apache.spark.sql.types._
+
+/**
+ * used to test close InputStream in UnsafeRowSerializer
+ */
+class ClosableByteArrayInputStream(buf: Array[Byte]) extends
ByteArrayInputStream(buf) {
--- End diff --
If you want to do this in a less-clear, more confusing way, you could use
Mockito to `spy` a regular `ByteArrayInuptStream` then use Mockito assertions
to check that `close()` was called. This is probably clearer, though, so no
reason to resort to a complicated approach.
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