| /* |
| * 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.geode.internal.size; |
| |
| import static org.apache.geode.internal.size.SizeTestUtil.OBJECT_SIZE; |
| import static org.apache.geode.internal.size.SizeTestUtil.REFERENCE_SIZE; |
| import static org.apache.geode.internal.size.SizeTestUtil.roundup; |
| import static org.junit.Assert.assertEquals; |
| |
| import org.junit.Test; |
| |
| import org.apache.geode.cache.util.ObjectSizer; |
| |
| public class SizeClassOnceObjectSizerJUnitTest { |
| |
| @Test |
| public void test() { |
| byte[] b1 = new byte[5]; |
| byte[] b2 = new byte[15]; |
| |
| // Make sure that we actually size byte arrays each time |
| assertEquals(roundup(OBJECT_SIZE + 4 + 5), ObjectSizer.SIZE_CLASS_ONCE.sizeof(b1)); |
| assertEquals(roundup(OBJECT_SIZE + 4 + 15), ObjectSizer.SIZE_CLASS_ONCE.sizeof(b2)); |
| |
| String s1 = "12345"; |
| String s2 = "1234567890"; |
| |
| // The size of a string varies based on the JDK version. With 1.7.0_06 |
| // a couple of fields were removed. So just measure the size of an empty string. |
| String emptyString = ""; |
| int emptySize = ObjectSizer.SIZE_CLASS_ONCE.sizeof(emptyString) |
| - ObjectSizer.SIZE_CLASS_ONCE.sizeof(new char[0]); |
| |
| // Make sure that we actually size strings each time |
| assertEquals(emptySize + roundup(OBJECT_SIZE + 4 + 5 * 2), |
| ObjectSizer.SIZE_CLASS_ONCE.sizeof(s1)); |
| assertEquals(emptySize + roundup(OBJECT_SIZE + 4 + 10 * 2), |
| ObjectSizer.SIZE_CLASS_ONCE.sizeof(s2)); |
| |
| TestObject t1 = new TestObject(5); |
| TestObject t2 = new TestObject(15); |
| int t1Size = ObjectSizer.SIZE_CLASS_ONCE.sizeof(t1); |
| assertEquals(roundup(OBJECT_SIZE + REFERENCE_SIZE) + roundup(OBJECT_SIZE + 4 + 5), t1Size); |
| // Since we are using SIZE_CLASS_ONCE t2 should have the same size as t1 |
| assertEquals(t1Size, ObjectSizer.SIZE_CLASS_ONCE.sizeof(t2)); |
| } |
| |
| private static class TestObject { |
| private final byte[] field; |
| |
| public TestObject(int size) { |
| this.field = new byte[size]; |
| } |
| } |
| |
| } |