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/*
* 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.util.io
import java.nio.ByteBuffer
import scala.util.Random
import org.apache.spark.SparkFunSuite
class ChunkedByteBufferOutputStreamSuite extends SparkFunSuite {
test("empty output") {
val o = new ChunkedByteBufferOutputStream(1024, ByteBuffer.allocate)
assert(o.toChunkedByteBuffer.size === 0)
}
test("write a single byte") {
val o = new ChunkedByteBufferOutputStream(1024, ByteBuffer.allocate)
o.write(10)
val chunkedByteBuffer = o.toChunkedByteBuffer
assert(chunkedByteBuffer.getChunks().length === 1)
assert(chunkedByteBuffer.getChunks().head.array().toSeq === Seq(10.toByte))
}
test("write a single near boundary") {
val o = new ChunkedByteBufferOutputStream(10, ByteBuffer.allocate)
o.write(new Array[Byte](9))
o.write(99)
val chunkedByteBuffer = o.toChunkedByteBuffer
assert(chunkedByteBuffer.getChunks().length === 1)
assert(chunkedByteBuffer.getChunks().head.array()(9) === 99.toByte)
}
test("write a single at boundary") {
val o = new ChunkedByteBufferOutputStream(10, ByteBuffer.allocate)
o.write(new Array[Byte](10))
o.write(99)
val arrays = o.toChunkedByteBuffer.getChunks().map(_.array())
assert(arrays.length === 2)
assert(arrays(1).length === 1)
assert(arrays(1)(0) === 99.toByte)
}
test("single chunk output") {
val ref = new Array[Byte](8)
Random.nextBytes(ref)
val o = new ChunkedByteBufferOutputStream(10, ByteBuffer.allocate)
o.write(ref)
val arrays = o.toChunkedByteBuffer.getChunks().map(_.array())
assert(arrays.length === 1)
assert(arrays.head.length === ref.length)
assert(arrays.head.toSeq === ref.toSeq)
}
test("single chunk output at boundary size") {
val ref = new Array[Byte](10)
Random.nextBytes(ref)
val o = new ChunkedByteBufferOutputStream(10, ByteBuffer.allocate)
o.write(ref)
val arrays = o.toChunkedByteBuffer.getChunks().map(_.array())
assert(arrays.length === 1)
assert(arrays.head.length === ref.length)
assert(arrays.head.toSeq === ref.toSeq)
}
test("multiple chunk output") {
val ref = new Array[Byte](26)
Random.nextBytes(ref)
val o = new ChunkedByteBufferOutputStream(10, ByteBuffer.allocate)
o.write(ref)
val arrays = o.toChunkedByteBuffer.getChunks().map(_.array())
assert(arrays.length === 3)
assert(arrays(0).length === 10)
assert(arrays(1).length === 10)
assert(arrays(2).length === 6)
assert(arrays(0).toSeq === ref.slice(0, 10))
assert(arrays(1).toSeq === ref.slice(10, 20))
assert(arrays(2).toSeq === ref.slice(20, 26))
}
test("multiple chunk output at boundary size") {
val ref = new Array[Byte](30)
Random.nextBytes(ref)
val o = new ChunkedByteBufferOutputStream(10, ByteBuffer.allocate)
o.write(ref)
val arrays = o.toChunkedByteBuffer.getChunks().map(_.array())
assert(arrays.length === 3)
assert(arrays(0).length === 10)
assert(arrays(1).length === 10)
assert(arrays(2).length === 10)
assert(arrays(0).toSeq === ref.slice(0, 10))
assert(arrays(1).toSeq === ref.slice(10, 20))
assert(arrays(2).toSeq === ref.slice(20, 30))
}
}
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