/*
* 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.logging.log4j.util;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Tests the Unbox class.
*/
public class Unbox1Test {
@BeforeClass
public static void beforeClass() {
System.clearProperty("log4j.unbox.ringbuffer.size");
}
@Test
public void testBoxClaimsItHas32Slots() throws Exception {
assertEquals(32, Unbox.getRingbufferSize());
}
@Test
public void testBoxHas32Slots() throws Exception {
final int MAX = 32;
final StringBuilder[] probe = new StringBuilder[MAX * 3];
for (int i = 0; i <= probe.length - 8; ) {
probe[i++] = Unbox.box(true);
probe[i++] = Unbox.box('c');
probe[i++] = Unbox.box(Byte.MAX_VALUE);
probe[i++] = Unbox.box(Double.MAX_VALUE);
probe[i++] = Unbox.box(Float.MAX_VALUE);
probe[i++] = Unbox.box(Integer.MAX_VALUE);
probe[i++] = Unbox.box(Long.MAX_VALUE);
probe[i++] = Unbox.box(Short.MAX_VALUE);
}
for (int i = 0; i < probe.length - MAX; i++) {
assertSame("probe[" + i +"], probe[" + (i + MAX) +"]", probe[i], probe[i + MAX]);
for (int j = 1; j < MAX - 1; j++) {
assertNotSame("probe[" + i +"], probe[" + (i + j) +"]", probe[i], probe[i + j]);
}
}
}
@Test
public void testBoxBoolean() throws Exception {
assertEquals("true", Unbox.box(true).toString());
assertEquals("false", Unbox.box(false).toString());
}
@Test
public void testBoxByte() throws Exception {
assertEquals("0", Unbox.box((byte) 0).toString());
assertEquals("1", Unbox.box((byte) 1).toString());
assertEquals("127", Unbox.box((byte) 127).toString());
assertEquals("-1", Unbox.box((byte) -1).toString());
assertEquals("-128", Unbox.box((byte) -128).toString());
}
@Test
public void testBoxChar() throws Exception {
assertEquals("a", Unbox.box('a').toString());
assertEquals("b", Unbox.box('b').toString());
assertEquals("字", Unbox.box('字').toString());
}
@Test
public void testBoxDouble() throws Exception {
assertEquals("3.14", Unbox.box(3.14).toString());
assertEquals(new Double(Double.MAX_VALUE).toString(), Unbox.box(Double.MAX_VALUE).toString());
assertEquals(new Double(Double.MIN_VALUE).toString(), Unbox.box(Double.MIN_VALUE).toString());
}
@Test
public void testBoxFloat() throws Exception {
assertEquals("3.14", Unbox.box(3.14F).toString());
assertEquals(new Float(Float.MAX_VALUE).toString(), Unbox.box(Float.MAX_VALUE).toString());
assertEquals(new Float(Float.MIN_VALUE).toString(), Unbox.box(Float.MIN_VALUE).toString());
}
@Test
public void testBoxInt() throws Exception {
assertEquals("0", Unbox.box(0).toString());
assertEquals("1", Unbox.box(1).toString());
assertEquals("127", Unbox.box(127).toString());
assertEquals("-1", Unbox.box(-1).toString());
assertEquals("-128", Unbox.box(-128).toString());
assertEquals(new Integer(Integer.MAX_VALUE).toString(), Unbox.box(Integer.MAX_VALUE).toString());
assertEquals(new Integer(Integer.MIN_VALUE).toString(), Unbox.box(Integer.MIN_VALUE).toString());
}
@Test
public void testBoxLong() throws Exception {
assertEquals("0", Unbox.box(0L).toString());
assertEquals("1", Unbox.box(1L).toString());
assertEquals("127", Unbox.box(127L).toString());
assertEquals("-1", Unbox.box(-1L).toString());
assertEquals("-128", Unbox.box(-128L).toString());
assertEquals(new Long(Long.MAX_VALUE).toString(), Unbox.box(Long.MAX_VALUE).toString());
assertEquals(new Long(Long.MIN_VALUE).toString(), Unbox.box(Long.MIN_VALUE).toString());
}
@Test
public void testBoxShort() throws Exception {
assertEquals("0", Unbox.box((short) 0).toString());
assertEquals("1", Unbox.box((short) 1).toString());
assertEquals("127", Unbox.box((short) 127).toString());
assertEquals("-1", Unbox.box((short) -1).toString());
assertEquals("-128", Unbox.box((short) -128).toString());
assertEquals(new Short(Short.MAX_VALUE).toString(), Unbox.box(Short.MAX_VALUE).toString());
assertEquals(new Short(Short.MIN_VALUE).toString(), Unbox.box(Short.MIN_VALUE).toString());
}
@Test
public void testBoxIsThreadLocal() throws Exception {
final StringBuilder[] probe = new StringBuilder[16 * 3];
populate(0, probe);
final Thread t1 = new Thread() {
@Override
public void run() {
populate(16, probe);
}
};
t1.start();
t1.join();
final Thread t2 = new Thread() {
@Override
public void run() {
populate(16, probe);
}
};
t2.start();
t2.join();
for (int i = 0; i < probe.length - 16; i++) {
for (int j = 1; j < 16; j++) {
assertNotSame("probe[" + i +"]=" + probe[i] + ", probe[" + (i + j) +"]=" + probe[i + j],
probe[i], probe[i + j]);
}
}
}
private void populate(final int start, final StringBuilder[] probe) {
for (int i = start; i <= start + 8; ) {
probe[i++] = Unbox.box(true);
probe[i++] = Unbox.box('c');
probe[i++] = Unbox.box(Byte.MAX_VALUE);
probe[i++] = Unbox.box(Double.MAX_VALUE);
probe[i++] = Unbox.box(Float.MAX_VALUE);
probe[i++] = Unbox.box(Integer.MAX_VALUE);
probe[i++] = Unbox.box(Long.MAX_VALUE);
probe[i++] = Unbox.box(Short.MAX_VALUE);
}
}
}