Github user mtustin-handy commented on a diff in the pull request: https://github.com/apache/spark/pull/12016#discussion_r58143286 --- Diff: core/src/test/scala/org/apache/spark/partial/SumEvaluatorSuite.scala --- @@ -0,0 +1,117 @@ +/* + * 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.partial + + +import org.apache.spark._ +import org.apache.spark.util.StatCounter + +class SumEvaluatorSuite extends SparkFunSuite with SharedSparkContext { + + test("correct handling of count 1") { + + //setup + val counter = new StatCounter(List(2.0)) + // count of 10 because it's larger than 1, + // and 0.95 because that's the default + val evaluator = new SumEvaluator(10, 0.95) + // arbitrarily assign id 1 + evaluator.merge(1, counter) + + //execute + val res = evaluator.currentResult() + // 38.0 - 7.1E-15 because that's how the maths shakes out + val target_mean = 38.0 - 7.1E-15 --- End diff -- My python is showing ð¬ On Thursday, March 31, 2016, Sean Owen <notificati...@github.com> wrote: > In core/src/test/scala/org/apache/spark/partial/SumEvaluatorSuite.scala > <https://github.com/apache/spark/pull/12016#discussion_r58143122>: > > > +class SumEvaluatorSuite extends SparkFunSuite with SharedSparkContext { > > + > > + test("correct handling of count 1") { > > + > > + //setup > > + val counter = new StatCounter(List(2.0)) > > + // count of 10 because it's larger than 1, > > + // and 0.95 because that's the default > > + val evaluator = new SumEvaluator(10, 0.95) > > + // arbitrarily assign id 1 > > + evaluator.merge(1, counter) > > + > > + //execute > > + val res = evaluator.currentResult() > > + // 38.0 - 7.1E-15 because that's how the maths shakes out > > + val target_mean = 38.0 - 7.1E-15 > > Looking good, now into nits. var names should be camelCase instead of > with_underscores. > > â > You are receiving this because you authored the thread. > Reply to this email directly or view it on GitHub > <https://github.com/apache/spark/pull/12016/files/93bcd99b11e0c914053cb1cfbe37fe0df4ba1a38#r58143122> > -- Want to work at Handy? Check out our culture deck and open roles <http://www.handy.com/careers> Latest news <http://www.handy.com/press> at Handy Handy just raised $50m <http://venturebeat.com/2015/11/02/on-demand-home-service-handy-raises-50m-in-round-led-by-fidelity/> led by Fidelity
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