Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/20984#discussion_r180358272
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/util/ArrayDataIndexedSeqSuite.scala
---
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.catalyst.util
+
+import org.apache.spark.SparkFunSuite
+import org.apache.spark.sql.catalyst.encoders.ExpressionEncoder
+import org.apache.spark.sql.catalyst.expressions.UnsafeArrayData
+import org.apache.spark.sql.types.StringType
+import org.apache.spark.unsafe.types.UTF8String
+
+class ArrayDataIndexedSeqSuite extends SparkFunSuite {
+ def utf8(str: String): UTF8String = UTF8String.fromString(str)
+ val stringArray = Array("1", "10", "100", null)
+
+ private def testArrayData(arrayData: ArrayData): Unit = {
+ assert(arrayData.numElements == stringArray.length)
+ stringArray.zipWithIndex.map { case (e, i) =>
+ if (e != null) {
+ assert(arrayData.getUTF8String(i).toString().equals(e))
+ } else {
+ assert(arrayData.isNullAt(i))
+ }
+ }
+
+ val seq = arrayData.toSeq[UTF8String](StringType)
+ stringArray.zipWithIndex.map { case (e, i) =>
+ if (e != null) {
+ assert(seq(i).toString().equals(e))
+ } else {
+ assert(seq(i) == null)
+ }
+ }
+
+ intercept[IndexOutOfBoundsException] {
+ seq(-1)
+ }.getMessage().contains("must be between 0 and the length of the
ArrayData.")
+
+ intercept[IndexOutOfBoundsException] {
+ seq(seq.length)
+ }.getMessage().contains("must be between 0 and the length of the
ArrayData.")
+ }
+
+ test("ArrayDataIndexedSeq can work on GenericArrayData") {
+ val arrayData = new GenericArrayData(stringArray.map(utf8(_)))
+ testArrayData(arrayData)
+ }
+
+ test("ArrayDataIndexedSeq can work on UnsafeArrayData") {
+ val unsafeArrayData =
ExpressionEncoder[Array[String]].resolveAndBind().
+ toRow(stringArray).getArray(0)
+ assert(unsafeArrayData.isInstanceOf[UnsafeArrayData])
+ testArrayData(unsafeArrayData)
--- End diff --
This test may need polish to test again all possible types.
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