/*
* Copyright 2012-2017 the original author or authors.
*
* 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 org.springframework.boot.devtools.restart.server;
import java.io.File;
import java.io.FileOutputStream;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.Set;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.rules.TemporaryFolder;
import org.springframework.boot.devtools.restart.classloader.ClassLoaderFile;
import org.springframework.boot.devtools.restart.classloader.ClassLoaderFile.Kind;
import org.springframework.boot.devtools.restart.classloader.ClassLoaderFiles;
import org.springframework.util.FileCopyUtils;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link RestartServer}.
*
* @author Phillip Webb
*/
public class RestartServerTests {
@Rule
public ExpectedException thrown = ExpectedException.none();
@Rule
public TemporaryFolder temp = new TemporaryFolder();
@Test
public void sourceFolderUrlFilterMustNotBeNull() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("SourceFolderUrlFilter must not be null");
new RestartServer((SourceFolderUrlFilter) null);
}
@Test
public void updateAndRestart() throws Exception {
URL url1 = new URL("file:/proj/module-a.jar!/");
URL url2 = new URL("file:/proj/module-b.jar!/");
URL url3 = new URL("file:/proj/module-c.jar!/");
URL url4 = new URL("file:/proj/module-d.jar!/");
URLClassLoader classLoaderA = new URLClassLoader(new URL[] { url1, url2 });
URLClassLoader classLoaderB = new URLClassLoader(new URL[] { url3, url4 },
classLoaderA);
SourceFolderUrlFilter filter = new DefaultSourceFolderUrlFilter();
MockRestartServer server = new MockRestartServer(filter, classLoaderB);
ClassLoaderFiles files = new ClassLoaderFiles();
ClassLoaderFile fileA = new ClassLoaderFile(Kind.ADDED, new byte[0]);
ClassLoaderFile fileB = new ClassLoaderFile(Kind.ADDED, new byte[0]);
files.addFile("my/module-a", "ClassA.class", fileA);
files.addFile("my/module-c", "ClassB.class", fileB);
server.updateAndRestart(files);
Set<URL> expectedUrls = new LinkedHashSet<>(Arrays.asList(url1, url3));
assertThat(server.restartUrls).isEqualTo(expectedUrls);
assertThat(server.restartFiles).isEqualTo(files);
}
@Test
public void updateSetsJarLastModified() throws Exception {
long startTime = System.currentTimeMillis();
File folder = this.temp.newFolder();
File jarFile = new File(folder, "module-a.jar");
new FileOutputStream(jarFile).close();
jarFile.setLastModified(0);
URL url = jarFile.toURI().toURL();
URLClassLoader classLoader = new URLClassLoader(new URL[] { url });
SourceFolderUrlFilter filter = new DefaultSourceFolderUrlFilter();
MockRestartServer server = new MockRestartServer(filter, classLoader);
ClassLoaderFiles files = new ClassLoaderFiles();
ClassLoaderFile fileA = new ClassLoaderFile(Kind.ADDED, new byte[0]);
files.addFile("my/module-a", "ClassA.class", fileA);
server.updateAndRestart(files);
assertThat(jarFile.lastModified()).isGreaterThan(startTime - 1000);
}
@Test
public void updateReplacesLocalFilesWhenPossible() throws Exception {
// This is critical for Cloud Foundry support where the application is
// run exploded and resources can be found from the servlet root (outside of the
// classloader)
File folder = this.temp.newFolder();
File classFile = new File(folder, "ClassA.class");
FileCopyUtils.copy("abc".getBytes(), classFile);
URL url = folder.toURI().toURL();
URLClassLoader classLoader = new URLClassLoader(new URL[] { url });
SourceFolderUrlFilter filter = new DefaultSourceFolderUrlFilter();
MockRestartServer server = new MockRestartServer(filter, classLoader);
ClassLoaderFiles files = new ClassLoaderFiles();
ClassLoaderFile fileA = new ClassLoaderFile(Kind.ADDED, "def".getBytes());
files.addFile("my/module-a", "ClassA.class", fileA);
server.updateAndRestart(files);
assertThat(FileCopyUtils.copyToByteArray(classFile)).isEqualTo("def".getBytes());
}
private static class MockRestartServer extends RestartServer {
MockRestartServer(SourceFolderUrlFilter sourceFolderUrlFilter,
ClassLoader classLoader) {
super(sourceFolderUrlFilter, classLoader);
}
private Set<URL> restartUrls;
private ClassLoaderFiles restartFiles;
@Override
protected void restart(Set<URL> urls, ClassLoaderFiles files) {
this.restartUrls = urls;
this.restartFiles = files;
}
}
}