| /* |
| * 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 static org.apache.datasketches.Util.DEFAULT_UPDATE_SEED; |
| |
| import org.apache.datasketches.SketchesArgumentException; |
| import org.apache.datasketches.memory.WritableMemory; |
| import org.apache.datasketches.tuple.Util; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| @SuppressWarnings("javadoc") |
| public class DirectArrayOfDoublesCompactSketchTest { |
| |
| @Test |
| public void emptyFromQuickSelectSketch() { |
| ArrayOfDoublesUpdatableSketch us = |
| new ArrayOfDoublesUpdatableSketchBuilder().build(WritableMemory.wrap(new byte[1000000])); |
| ArrayOfDoublesCompactSketch sketch = us.compact(WritableMemory.wrap(new byte[1000000])); |
| Assert.assertTrue(sketch.isEmpty()); |
| Assert.assertFalse(sketch.isEstimationMode()); |
| Assert.assertEquals(sketch.getEstimate(), 0.0); |
| Assert.assertEquals(sketch.getLowerBound(1), 0.0); |
| Assert.assertEquals(sketch.getUpperBound(1), 0.0); |
| Assert.assertEquals(sketch.getRetainedEntries(), 0); |
| Assert.assertEquals(sketch.getThetaLong(), Long.MAX_VALUE); |
| Assert.assertEquals(sketch.getTheta(), 1.0); |
| Assert.assertNotNull(sketch.getValues()); |
| Assert.assertEquals(sketch.getValues().length, 0); |
| ArrayOfDoublesSketchIterator it = sketch.iterator(); |
| while (it.next()) { |
| Assert.fail("empty sketch expected"); |
| } |
| } |
| |
| @Test |
| public void exactModeFromQuickSelectSketch() { |
| ArrayOfDoublesUpdatableSketch us = |
| new ArrayOfDoublesUpdatableSketchBuilder().build(WritableMemory.wrap(new byte[1000000])); |
| us.update(1, new double[] {1.0}); |
| us.update(2, new double[] {1.0}); |
| us.update(3, new double[] {1.0}); |
| us.update(1, new double[] {1.0}); |
| us.update(2, new double[] {1.0}); |
| us.update(3, new double[] {1.0}); |
| ArrayOfDoublesCompactSketch sketch = us.compact(WritableMemory.wrap(new byte[1000000])); |
| Assert.assertFalse(sketch.isEmpty()); |
| Assert.assertFalse(sketch.isEstimationMode()); |
| Assert.assertEquals(sketch.getEstimate(), 3.0); |
| Assert.assertEquals(sketch.getLowerBound(1), 3.0); |
| Assert.assertEquals(sketch.getUpperBound(1), 3.0); |
| Assert.assertEquals(sketch.getRetainedEntries(), 3); |
| Assert.assertEquals(sketch.getThetaLong(), Long.MAX_VALUE); |
| Assert.assertEquals(sketch.getTheta(), 1.0); |
| Assert.assertEquals(sketch.getSeedHash(), Util.computeSeedHash(DEFAULT_UPDATE_SEED)); |
| double[][] values = sketch.getValues(); |
| Assert.assertEquals(values.length, 3); |
| for (double[] array: values) { |
| Assert.assertEquals(array[0], 2.0); |
| } |
| } |
| |
| @Test |
| public void serializeDeserializeSmallExact() { |
| ArrayOfDoublesUpdatableSketch us = new ArrayOfDoublesUpdatableSketchBuilder().build(WritableMemory.wrap(new byte[1000000])); |
| us.update("a", new double[] {1.0}); |
| us.update("b", new double[] {1.0}); |
| us.update("c", new double[] {1.0}); |
| ArrayOfDoublesCompactSketch sketch1 = us.compact(WritableMemory.wrap(new byte[1000000])); |
| ArrayOfDoublesSketch sketch2 = ArrayOfDoublesSketches.wrapSketch(WritableMemory.wrap(sketch1.toByteArray())); |
| Assert.assertFalse(sketch2.isEmpty()); |
| Assert.assertFalse(sketch2.isEstimationMode()); |
| Assert.assertEquals(sketch2.getEstimate(), 3.0); |
| Assert.assertEquals(sketch2.getLowerBound(1), 3.0); |
| Assert.assertEquals(sketch2.getUpperBound(1), 3.0); |
| Assert.assertEquals(sketch2.getRetainedEntries(), 3); |
| Assert.assertEquals(sketch2.getThetaLong(), Long.MAX_VALUE); |
| Assert.assertEquals(sketch2.getTheta(), 1.0); |
| double[][] values = sketch2.getValues(); |
| Assert.assertEquals(values.length, 3); |
| for (double[] array: values) { |
| Assert.assertEquals(array[0], 1.0); |
| } |
| } |
| |
| @Test |
| public void serializeDeserializeEstimation() { |
| ArrayOfDoublesUpdatableSketch us = new ArrayOfDoublesUpdatableSketchBuilder().build(WritableMemory.wrap(new byte[1000000])); |
| for (int i = 0; i < 8192; i++) { |
| us.update(i, new double[] {1.0}); |
| } |
| ArrayOfDoublesCompactSketch sketch1 = us.compact(WritableMemory.wrap(new byte[1000000])); |
| ArrayOfDoublesSketch sketch2 = ArrayOfDoublesSketches.wrapSketch(WritableMemory.wrap(sketch1.toByteArray())); |
| Assert.assertFalse(sketch2.isEmpty()); |
| Assert.assertTrue(sketch2.isEstimationMode()); |
| Assert.assertEquals(sketch2.getEstimate(), sketch1.getEstimate()); |
| Assert.assertEquals(sketch2.getThetaLong(), sketch1.getThetaLong()); |
| } |
| |
| @Test(expectedExceptions = SketchesArgumentException.class) |
| public void deserializeWithWrongSeed() { |
| ArrayOfDoublesUpdatableSketch us = new ArrayOfDoublesUpdatableSketchBuilder().build(WritableMemory.wrap(new byte[1000000])); |
| for (int i = 0; i < 8192; i++) { |
| us.update(i, new double[] {1.0}); |
| } |
| ArrayOfDoublesCompactSketch sketch1 = us.compact(WritableMemory.wrap(new byte[1000000])); |
| ArrayOfDoublesSketches.wrapSketch(WritableMemory.wrap(sketch1.toByteArray()), 123); |
| } |
| |
| @Test(expectedExceptions = SketchesArgumentException.class) |
| public void fromQuickSelectSketchNotEnoughMemory() { |
| ArrayOfDoublesUpdatableSketch us = new ArrayOfDoublesUpdatableSketchBuilder().build(WritableMemory.wrap(new byte[1000000])); |
| us.update(1, new double[] {1.0}); |
| us.compact(WritableMemory.wrap(new byte[39])); |
| } |
| |
| } |