| /* |
| * 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.datasketches.tuple.arrayofdoubles; |
| |
| import org.apache.datasketches.SketchesArgumentException; |
| import org.apache.datasketches.memory.Memory; |
| import org.apache.datasketches.memory.WritableMemory; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| @SuppressWarnings("javadoc") |
| public class ArrayOfDoublesQuickSelectSketchTest { |
| |
| @Test(expectedExceptions = SketchesArgumentException.class) |
| public void invalidSamplingProbability() { |
| new ArrayOfDoublesUpdatableSketchBuilder().setSamplingProbability(2f); |
| } |
| |
| @Test |
| public void heapToDirectExactTwoDoubles() { |
| double[] valuesArr = {1.0, 2.0}; |
| ArrayOfDoublesUpdatableSketch sketch1 = |
| new ArrayOfDoublesUpdatableSketchBuilder().setNumberOfValues(2).build(); |
| sketch1.update("a", valuesArr); |
| sketch1.update("b", valuesArr); |
| sketch1.update("c", valuesArr); |
| sketch1.update("d", valuesArr); |
| sketch1.update("a", valuesArr); |
| noopUpdates(sketch1, valuesArr); |
| ArrayOfDoublesUpdatableSketch sketch2 = ArrayOfDoublesUpdatableSketch.wrap(WritableMemory.writableWrap(sketch1.toByteArray())); |
| sketch2.update("b", valuesArr); |
| sketch2.update("c", valuesArr); |
| sketch2.update("d", valuesArr); |
| Assert.assertFalse(sketch2.isEmpty()); |
| Assert.assertFalse(sketch2.isEstimationMode()); |
| Assert.assertEquals(sketch2.getEstimate(), 4.0); |
| Assert.assertEquals(sketch2.getUpperBound(1), 4.0); |
| Assert.assertEquals(sketch2.getLowerBound(1), 4.0); |
| Assert.assertEquals(sketch2.getThetaLong(), Long.MAX_VALUE); |
| Assert.assertEquals(sketch2.getTheta(), 1.0); |
| double[][] values = sketch2.getValues(); |
| Assert.assertEquals(values.length, 4); |
| for (double[] array: values) { |
| Assert.assertEquals(array.length, 2); |
| Assert.assertEquals(array[0], 2.0); |
| Assert.assertEquals(array[1], 4.0); |
| } |
| } |
| |
| @Test |
| public void heapToDirectWithSeed() { |
| long seed = 1; |
| double[] values = {1.0}; |
| |
| ArrayOfDoublesUpdatableSketch sketch1 = |
| new ArrayOfDoublesUpdatableSketchBuilder().setSeed(seed).build(); |
| sketch1.update("a", values); |
| sketch1.update("b", values); |
| sketch1.update("c", values); |
| |
| ArrayOfDoublesUpdatableSketch sketch2 = ArrayOfDoublesUpdatableSketch.wrap(WritableMemory.writableWrap(sketch1.toByteArray()), seed); |
| sketch2.update("b", values); |
| sketch2.update("c", values); |
| sketch2.update("d", values); |
| |
| Assert.assertEquals(sketch2.getEstimate(), 4.0); |
| } |
| |
| @Test(expectedExceptions = SketchesArgumentException.class) |
| public void checkInsertExceptions() { |
| ArrayOfDoublesUpdatableSketch sketch1 = |
| new ArrayOfDoublesUpdatableSketchBuilder().setNumberOfValues(2).build(); |
| sketch1.update("a", new double[] {1.0}); |
| } |
| |
| @Test |
| public void directToHeapExactTwoDoubles() { |
| double[] valuesArr = {1.0, 2.0}; |
| ArrayOfDoublesUpdatableSketch sketch1 = |
| new ArrayOfDoublesUpdatableSketchBuilder(). |
| setNumberOfValues(2).build(WritableMemory.writableWrap(new byte[1000000])); |
| sketch1.update("a", valuesArr); |
| sketch1.update("b", valuesArr); |
| sketch1.update("c", valuesArr); |
| sketch1.update("d", valuesArr); |
| sketch1.update("a", valuesArr); |
| noopUpdates(sketch1, valuesArr); |
| ArrayOfDoublesUpdatableSketch sketch2 = ArrayOfDoublesUpdatableSketch.heapify(Memory.wrap(sketch1.toByteArray())); |
| sketch2.update("b", valuesArr); |
| sketch2.update("c", valuesArr); |
| sketch2.update("d", valuesArr); |
| Assert.assertFalse(sketch2.isEmpty()); |
| Assert.assertFalse(sketch2.isEstimationMode()); |
| Assert.assertEquals(sketch2.getEstimate(), 4.0); |
| Assert.assertEquals(sketch2.getUpperBound(1), 4.0); |
| Assert.assertEquals(sketch2.getLowerBound(1), 4.0); |
| Assert.assertEquals(sketch2.getThetaLong(), Long.MAX_VALUE); |
| Assert.assertEquals(sketch2.getTheta(), 1.0); |
| double[][] values = sketch2.getValues(); |
| Assert.assertEquals(values.length, 4); |
| for (double[] array: values) { |
| Assert.assertEquals(array.length, 2); |
| Assert.assertEquals(array[0], 2.0); |
| Assert.assertEquals(array[1], 4.0); |
| } |
| } |
| |
| @Test |
| public void directToHeapWithSeed() { |
| long seed = 1; |
| double[] values = {1.0}; |
| |
| ArrayOfDoublesUpdatableSketch sketch1 = |
| new ArrayOfDoublesUpdatableSketchBuilder().setSeed(seed).build( |
| WritableMemory.writableWrap(new byte[1000000])); |
| sketch1.update("a", values); |
| sketch1.update("b", values); |
| sketch1.update("c", values); |
| |
| ArrayOfDoublesUpdatableSketch sketch2 = ArrayOfDoublesUpdatableSketch.heapify(Memory.wrap(sketch1.toByteArray()), seed); |
| sketch2.update("b", values); |
| sketch2.update("c", values); |
| sketch2.update("d", values); |
| |
| Assert.assertEquals(sketch2.getEstimate(), 4.0); |
| } |
| |
| @Test |
| public void maxBytes() { |
| Assert.assertEquals(ArrayOfDoublesQuickSelectSketch.getMaxBytes(1024, 2), 49184); |
| } |
| |
| private static void noopUpdates(ArrayOfDoublesUpdatableSketch sketch, double[] valuesArr) { |
| byte[] byteArr = null; |
| sketch.update(byteArr, valuesArr); |
| byteArr = new byte[0]; |
| sketch.update(byteArr, valuesArr); |
| int[] intArr = null; |
| sketch.update(intArr, valuesArr); |
| intArr = new int[0]; |
| sketch.update(intArr, valuesArr); |
| long[] longArr = null; |
| sketch.update(longArr, valuesArr); |
| longArr = new long[0]; |
| sketch.update(longArr, valuesArr); |
| } |
| |
| } |