diff options
Diffstat (limited to 'core/src/test/scala/org/apache/spark/util/collection/OpenHashSetSuite.scala')
-rw-r--r-- | core/src/test/scala/org/apache/spark/util/collection/OpenHashSetSuite.scala | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/core/src/test/scala/org/apache/spark/util/collection/OpenHashSetSuite.scala b/core/src/test/scala/org/apache/spark/util/collection/OpenHashSetSuite.scala index 4e11e8a628..1b24f8f287 100644 --- a/core/src/test/scala/org/apache/spark/util/collection/OpenHashSetSuite.scala +++ b/core/src/test/scala/org/apache/spark/util/collection/OpenHashSetSuite.scala @@ -1,9 +1,44 @@ +/* + * 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.collection import org.scalatest.FunSuite +import org.scalatest.matchers.ShouldMatchers + +import org.apache.spark.util.SizeEstimator + +class OpenHashSetSuite extends FunSuite with ShouldMatchers { -class OpenHashSetSuite extends FunSuite { + test("size for specialized, primitive int") { + val loadFactor = 0.7 + val set = new OpenHashSet[Int](64, loadFactor) + for (i <- 0 until 1024) { + set.add(i) + } + assert(set.size === 1024) + assert(set.capacity > 1024) + val actualSize = SizeEstimator.estimate(set) + // 32 bits for the ints + 1 bit for the bitset + val expectedSize = set.capacity * (32 + 1) / 8 + // Make sure we are not allocating a significant amount of memory beyond our expected. + actualSize should be <= (expectedSize * 1.1).toLong + } test("primitive int") { val set = new OpenHashSet[Int] |