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VFSSchemeResourceFinderTest.java
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VFSSchemeResourceFinderTest.java
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/*
* Copyright (c) 2014, 2022 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.server.internal.scanning;
import java.io.Closeable;
import java.io.InputStream;
import java.net.URI;
import java.util.Enumeration;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import org.glassfish.jersey.server.ResourceFinder;
import org.jboss.vfs.TempFileProvider;
import org.jboss.vfs.VFS;
import org.jboss.vfs.VirtualFile;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author Martin Snyder
* @author Jason T. Greene
*/
public class VFSSchemeResourceFinderTest {
private String jaxRsApiPath;
@BeforeEach
public void setUp() throws Exception {
final String classPath = System.getProperty("java.class.path");
final String[] entries = classPath.split(System.getProperty("path.separator"));
for (final String entry : entries) {
if (entry.contains("jakarta.ws.rs-api")) {
jaxRsApiPath = entry;
break;
}
}
if (jaxRsApiPath == null) {
fail("Could not find jakarta.ws.rs-api.");
}
}
/**
* Test case for JERSEY-2197, JERSEY-2175.
*/
@Test
public void testClassEnumeration() throws Exception {
// Count actual entries.
int actualEntries = 0;
try (JarFile jarFile = new JarFile(jaxRsApiPath)) {
final Enumeration<JarEntry> entries = jarFile.entries();
while (entries.hasMoreElements()) {
final JarEntry entry = entries.nextElement();
if (entry.getName().endsWith(".class") && !entry.getName().endsWith("module-info.class")) {
actualEntries++;
}
}
}
// Scan entries using VFS scanner.
final VirtualFile mountDir = VFS.getChild("content");
ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
try (TempFileProvider provider = TempFileProvider.create("test", executor, false);
Closeable mount = VFS.mountZip(VFS.getChild(jaxRsApiPath), mountDir, provider)) {
ResourceFinder finder = new VfsSchemeResourceFinderFactory()
.create(new URI(mountDir.toURI().toString() + "/javax/ws/rs"), true);
int scannedEntryCount = 0;
while (finder.hasNext()) {
// Fetch next entry.
finder.next();
// This test doesn't actually do anything with the input stream, but it is important that it
// open/close the stream to simulate actual usage. The reported defect is only exposed if you
// call open/close in some fashion.
try (InputStream classStream = finder.open()) {
scannedEntryCount++;
}
}
assertThat("Failed to enumerate all contents of javax.ws.rs-api.", scannedEntryCount, equalTo(actualEntries));
} finally {
executor.shutdownNow();
}
}
}