| /* |
| * 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.kll; |
| |
| import static org.testng.Assert.assertEquals; |
| import static org.testng.Assert.assertFalse; |
| import static org.testng.Assert.assertTrue; |
| import static org.testng.Assert.fail; |
| |
| import org.apache.datasketches.common.SketchesArgumentException; |
| import org.apache.datasketches.memory.Memory; |
| import org.testng.annotations.Test; |
| |
| public class KllFloatsSketchSerDeTest { |
| |
| @Test |
| public void serializeDeserializeEmpty() { |
| final KllFloatsSketch sk1 = KllFloatsSketch.newHeapInstance(); |
| //from heap -> byte[] -> heap |
| final byte[] bytes = sk1.toByteArray(); |
| final KllFloatsSketch sk2 = KllFloatsSketch.heapify(Memory.wrap(bytes)); |
| assertEquals(bytes.length, sk1.getSerializedSizeBytes()); |
| assertTrue(sk2.isEmpty()); |
| assertEquals(sk2.getNumRetained(), sk1.getNumRetained()); |
| assertEquals(sk2.getN(), sk1.getN()); |
| assertEquals(sk2.getNormalizedRankError(false), sk1.getNormalizedRankError(false)); |
| try { sk2.getMinItem(); fail(); } catch (SketchesArgumentException e) {} |
| try { sk2.getMaxItem(); fail(); } catch (SketchesArgumentException e) {} |
| assertEquals(sk2.getSerializedSizeBytes(), sk1.getSerializedSizeBytes()); |
| //from heap -> byte[] -> off heap |
| final KllFloatsSketch sk3 = KllFloatsSketch.wrap(Memory.wrap(bytes)); |
| assertTrue(sk3.isEmpty()); |
| assertEquals(sk3.getNumRetained(), sk1.getNumRetained()); |
| assertEquals(sk3.getN(), sk1.getN()); |
| assertEquals(sk3.getNormalizedRankError(false), sk1.getNormalizedRankError(false)); |
| try { sk3.getMinItem(); fail(); } catch (SketchesArgumentException e) {} |
| try { sk3.getMaxItem(); fail(); } catch (SketchesArgumentException e) {} |
| assertEquals(sk3.getSerializedSizeBytes(), sk1.getSerializedSizeBytes()); |
| //from heap -> byte[] -> off heap -> byte[] -> compare byte[] |
| final byte[] bytes2 = sk3.toByteArray(); |
| assertEquals(bytes, bytes2); |
| } |
| |
| @Test |
| public void serializeDeserializeOneValue() { |
| final KllFloatsSketch sk1 = KllFloatsSketch.newHeapInstance(); |
| sk1.update(1); |
| //from heap -> byte[] -> heap |
| final byte[] bytes = sk1.toByteArray(); |
| final KllFloatsSketch sk2 = KllFloatsSketch.heapify(Memory.wrap(bytes)); |
| assertEquals(bytes.length, sk1.getSerializedSizeBytes()); |
| assertFalse(sk2.isEmpty()); |
| assertEquals(sk2.getNumRetained(), 1); |
| assertEquals(sk2.getN(), 1); |
| assertEquals(sk2.getNormalizedRankError(false), sk1.getNormalizedRankError(false)); |
| assertEquals(sk2.getMinItem(), 1.0F); |
| assertEquals(sk2.getMaxItem(), 1.0F); |
| assertEquals(sk2.getSerializedSizeBytes(), Long.BYTES + Float.BYTES); |
| //from heap -> byte[] -> off heap |
| final KllFloatsSketch sk3 = KllFloatsSketch.wrap(Memory.wrap(bytes)); |
| assertFalse(sk3.isEmpty()); |
| assertEquals(sk3.getNumRetained(), 1); |
| assertEquals(sk3.getN(), 1); |
| assertEquals(sk3.getNormalizedRankError(false), sk1.getNormalizedRankError(false)); |
| assertEquals(sk3.getMinItem(), 1.0f); |
| assertEquals(sk3.getMaxItem(), 1.0f); |
| assertEquals(sk3.getSerializedSizeBytes(), sk1.getSerializedSizeBytes()); |
| //from heap -> byte[] -> off heap -> byte[] -> compare byte[] |
| final byte[] bytes2 = sk3.toByteArray(); |
| assertEquals(bytes, bytes2); |
| } |
| |
| @Test |
| public void serializeDeserializeMultipleValues() { |
| final KllFloatsSketch sk1 = KllFloatsSketch.newHeapInstance(); |
| final int n = 1000; |
| for (int i = 0; i < n; i++) { |
| sk1.update(i); |
| } |
| assertEquals(sk1.getMinItem(), 0.0f); |
| assertEquals(sk1.getMaxItem(), 999.0f); |
| //from heap -> byte[] -> heap |
| final byte[] bytes = sk1.toByteArray(); |
| final KllFloatsSketch sk2 = KllFloatsSketch.heapify(Memory.wrap(bytes)); |
| assertEquals(bytes.length, sk1.getSerializedSizeBytes()); |
| assertFalse(sk2.isEmpty()); |
| assertEquals(sk2.getNumRetained(), sk1.getNumRetained()); |
| assertEquals(sk2.getN(), sk1.getN()); |
| assertEquals(sk2.getNormalizedRankError(false), sk1.getNormalizedRankError(false)); |
| assertEquals(sk2.getMinItem(), sk1.getMinItem()); |
| assertEquals(sk2.getMaxItem(), sk1.getMaxItem()); |
| assertEquals(sk2.getSerializedSizeBytes(), sk1.getSerializedSizeBytes()); |
| //from heap -> byte[] -> off heap |
| final KllFloatsSketch sk3 = KllFloatsSketch.wrap(Memory.wrap(bytes)); |
| assertFalse(sk3.isEmpty()); |
| assertEquals(sk3.getNumRetained(), sk1.getNumRetained()); |
| assertEquals(sk3.getN(), sk1.getN()); |
| assertEquals(sk3.getNormalizedRankError(false), sk1.getNormalizedRankError(false)); |
| assertEquals(sk3.getMinItem(), sk1.getMinItem()); |
| assertEquals(sk3.getMaxItem(), sk1.getMaxItem()); |
| assertEquals(sk3.getSerializedSizeBytes(), sk1.getSerializedSizeBytes()); |
| //from heap -> byte[] -> off heap -> byte[] -> compare byte[] |
| final byte[] bytes2 = sk3.toByteArray(); |
| assertEquals(bytes, bytes2); |
| } |
| |
| } |