/*
* Copyright 2008-2014 by Emeric Vernat
*
* This file is part of Java Melody.
*
* Licensed 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 net.bull.javamelody;
import static net.bull.javamelody.HttpParameters.HEAP_HISTO_PART;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import java.util.Collections;
import java.util.List;
import net.bull.javamelody.HeapHistogram.ClassInfo;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
/**
* Test unitaire de la classe HtmlHeapHistogramReport.
* @author Emeric Vernat
*/
public class TestHtmlHeapHistogramReport {
private static final String EXCEPTION = "exception";
/** Initialisation. */
@Before
public void setUp() {
Utils.initialize();
}
/** Finalisation.
* @throws Exception e */
@After
public void tearDown() throws Exception {
VirtualMachine.detach();
}
private static List<JavaInformations> createJavaInformationsList() {
return Collections.singletonList(new JavaInformations(null, true));
}
private static void assertNotEmptyAndClear(final StringWriter writer) {
assertTrue("rapport vide", writer.getBuffer().length() > 0);
writer.getBuffer().setLength(0);
}
/** Test.
* @throws IOException e */
@Test
public void testHeapHistoSun() throws IOException {
final InputStream input = getClass().getResourceAsStream("/heaphisto.txt");
try {
final HeapHistogram heapHistogram = new HeapHistogram(input, false);
report(heapHistogram);
} finally {
input.close();
}
}
/** Test.
* @throws IOException e */
@Test
public void testHeapHistoBEA() throws IOException {
final InputStream input = getClass().getResourceAsStream("/heaphisto_jrockit.txt");
try {
final HeapHistogram heapHistogram = new HeapHistogram(input, true);
report(heapHistogram);
} finally {
input.close();
}
}
/** Test. */
@Test
public void testHeapHistoClassInfoParseLong() {
assertEquals("parseLongWithK", 100 * 1024, HeapHistogram.ClassInfo.parseLongWithK("100k"));
assertEquals("parseLongWithK", 100, HeapHistogram.ClassInfo.parseLongWithK("100"));
}
private void report(HeapHistogram heapHistogram) throws IOException {
heapHistogram.add(heapHistogram);
final StringWriter writer = new StringWriter();
new HtmlHeapHistogramReport(heapHistogram, writer).toHtml();
assertNotEmptyAndClear(writer);
final Counter counter = new Counter("test html report", null);
final Collector collector = new Collector("test", Collections.singletonList(counter));
final Period period = Period.TOUT;
final HtmlReport htmlReport = new HtmlReport(collector, null, createJavaInformationsList(),
period, writer);
htmlReport.writeHeapHistogram(heapHistogram, "message", HEAP_HISTO_PART);
assertNotEmptyAndClear(writer);
htmlReport.writeHeapHistogram(heapHistogram, null, HEAP_HISTO_PART);
assertNotEmptyAndClear(writer);
final ClassInfo classInfo = heapHistogram.getHeapHistogram().get(0);
classInfo.hashCode();
assertEquals("classInfo", classInfo, classInfo);
if (classInfo.equals(new Object())) {
fail("classInfo");
}
}
/** Test. */
@Test
public void testVirtualMachine() {
// rq : on ne peut pas tester complètement VirtualMachine
// car eclipse et maven lance junit dans un jre (sans tools.jar) et non dans un jdk
final boolean supported = VirtualMachine.isSupported();
final boolean enabled = VirtualMachine.isEnabled();
if (supported && !enabled) {
fail("supported && !enabled");
}
VirtualMachine.isJRockit();
// ces méthodes ne peuvent fonctionner dans maven et/ou junit
final Runnable runnable = new Runnable() {
@Override
public void run() {
virtualMachine();
}
};
final Thread thread = new Thread(runnable, getClass().getSimpleName());
thread.setDaemon(true);
thread.start();
try {
// timeout de 10s pour certains envionnements de tests
thread.join(10000);
} catch (final InterruptedException e) {
assertNotNull(EXCEPTION, e);
}
}
void virtualMachine() {
try {
VirtualMachine.getJvmVirtualMachine();
} catch (final Exception e) {
assertNotNull(EXCEPTION, e);
}
try {
VirtualMachine.heapHisto();
} catch (final Exception e) {
assertNotNull(EXCEPTION, e);
}
try {
VirtualMachine.createHeapHistogram();
} catch (final Exception e) {
assertNotNull(EXCEPTION, e);
}
try {
VirtualMachine.detach();
} catch (final Exception e) {
assertNotNull(EXCEPTION, e);
}
}
}