| /* |
| * 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.theta; |
| |
| import static org.testng.Assert.assertEquals; |
| import static org.testng.Assert.fail; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| import org.apache.datasketches.memory.Memory; |
| import org.apache.datasketches.SketchesReadOnlyException; |
| |
| @SuppressWarnings("javadoc") |
| public class ReadOnlyMemoryTest { |
| |
| @Test |
| public void wrapAndTryUpdatingUpdateSketch() { |
| UpdateSketch updateSketch = UpdateSketch.builder().build(); |
| updateSketch.update(1); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(updateSketch.toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| UpdateSketch sketch = (UpdateSketch) Sketch.wrap(mem); |
| assertEquals(sketch.getEstimate(), 1.0); |
| |
| boolean thrown = false; |
| try { |
| sketch.update(2); |
| } catch (SketchesReadOnlyException e) { |
| thrown = true; |
| } |
| Assert.assertTrue(thrown); |
| } |
| |
| @Test |
| public void wrapCompactUnorderedSketch() { |
| UpdateSketch updateSketch = UpdateSketch.builder().build(); |
| updateSketch.update(1); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(updateSketch.compact(false, null).toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| Sketch sketch = Sketch.wrap(mem); |
| assertEquals(sketch.getEstimate(), 1.0); |
| } |
| |
| @Test |
| public void wrapCompactOrderedSketch() { |
| UpdateSketch updateSketch = UpdateSketch.builder().build(); |
| updateSketch.update(1); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(updateSketch.compact().toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| Sketch sketch = Sketch.wrap(mem); |
| assertEquals(sketch.getEstimate(), 1.0); |
| } |
| |
| @Test |
| public void heapifyUpdateSketch() { |
| UpdateSketch us1 = UpdateSketch.builder().build(); |
| us1.update(1); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(us1.toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| // downcasting is not recommended, for testing only |
| UpdateSketch us2 = (UpdateSketch) Sketch.heapify(mem); |
| us2.update(2); |
| assertEquals(us2.getEstimate(), 2.0); |
| } |
| |
| @Test |
| public void heapifyCompactUnorderedSketch() { |
| UpdateSketch updateSketch = UpdateSketch.builder().build(); |
| updateSketch.update(1); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(updateSketch.compact(false, null).toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| Sketch sketch = Sketch.heapify(mem); |
| assertEquals(sketch.getEstimate(), 1.0); |
| } |
| |
| @Test |
| public void heapifyCompactOrderedSketch() { |
| UpdateSketch updateSketch = UpdateSketch.builder().build(); |
| updateSketch.update(1); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(updateSketch.compact().toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| Sketch sketch = Sketch.heapify(mem); |
| assertEquals(sketch.getEstimate(), 1.0); |
| } |
| |
| @Test |
| public void heapifyUnion() { |
| Union u1 = SetOperation.builder().buildUnion(); |
| u1.update(1); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(u1.toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| Union u2 = (Union) SetOperation.heapify(mem); |
| u2.update(2); |
| Assert.assertEquals(u2.getResult().getEstimate(), 2.0); |
| } |
| |
| @Test |
| public void wrapAndTryUpdatingUnion() { |
| Union u1 = SetOperation.builder().buildUnion(); |
| u1.update(1); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(u1.toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| |
| Union u2 = (Union) Sketches.wrapSetOperation(mem); |
| Union u3 = Sketches.wrapUnion(mem); |
| Assert.assertEquals(u2.getResult().getEstimate(), 1.0); |
| Assert.assertEquals(u3.getResult().getEstimate(), 1.0); |
| |
| try { |
| u2.update(2); |
| fail(); |
| } catch (SketchesReadOnlyException e) { |
| //expected |
| } |
| |
| try { |
| u3.update(2); |
| fail(); |
| } catch (SketchesReadOnlyException e) { |
| //expected |
| } |
| } |
| |
| @Test |
| public void heapifyIntersection() { |
| UpdateSketch us1 = UpdateSketch.builder().build(); |
| us1.update(1); |
| us1.update(2); |
| UpdateSketch us2 = UpdateSketch.builder().build(); |
| us2.update(2); |
| us2.update(3); |
| |
| Intersection i1 = SetOperation.builder().buildIntersection(); |
| i1.update(us1); |
| i1.update(us2); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(i1.toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| Intersection i2 = (Intersection) SetOperation.heapify(mem); |
| i2.update(us1); |
| Assert.assertEquals(i2.getResult().getEstimate(), 1.0); |
| } |
| |
| @Test |
| public void wrapIntersection() { |
| UpdateSketch us1 = UpdateSketch.builder().build(); |
| us1.update(1); |
| us1.update(2); |
| UpdateSketch us2 = UpdateSketch.builder().build(); |
| us2.update(2); |
| us2.update(3); |
| |
| Intersection i1 = SetOperation.builder().buildIntersection(); |
| i1.update(us1); |
| i1.update(us2); |
| Memory mem = Memory.wrap(ByteBuffer.wrap(i1.toByteArray()) |
| .asReadOnlyBuffer().order(ByteOrder.nativeOrder())); |
| Intersection i2 = (Intersection) SetOperation.wrap(mem); |
| Assert.assertEquals(i2.getResult().getEstimate(), 1.0); |
| |
| boolean thrown = false; |
| try { |
| i2.update(us1); |
| } catch (SketchesReadOnlyException e) { |
| thrown = true; |
| } |
| Assert.assertTrue(thrown); |
| } |
| |
| @Test |
| public void printlnTest() { |
| println("PRINTING: "+this.getClass().getName()); |
| } |
| |
| /** |
| * @param s value to print |
| */ |
| static void println(String s) { |
| //System.out.println(s); //disable here |
| } |
| |
| } |