| /* |
| * 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 examples; |
| |
| import static org.junit.Assert.fail; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.URLDecoder; |
| import java.security.CodeSource; |
| import java.util.Enumeration; |
| import java.util.Properties; |
| import java.util.jar.JarEntry; |
| import java.util.jar.JarFile; |
| |
| import org.junit.Test; |
| |
| public class MainTest { |
| |
| @Test |
| public void checkExamplesPropertiesIsComplete() throws Exception { |
| Properties cp = scanClasses(); |
| Properties fp = new Properties(); |
| fp.load(this.getClass().getResourceAsStream("examples.properties")); |
| @SuppressWarnings("unchecked") // OK |
| final Enumeration<String> propertyNames = (Enumeration<String>) cp.propertyNames(); |
| while(propertyNames.hasMoreElements()){ |
| String c = propertyNames.nextElement(); |
| String fv = fp.getProperty(c); |
| final String cv = cp.getProperty(c); |
| if (fv == null) { |
| System.out.printf("%-25s %s - missing from examples.properties%n",c,cv); |
| } else if (!fv.equals(cv)) { |
| System.out.printf("%-25s %s - expected value %s %n",c,fv,cv); |
| } |
| } |
| } |
| |
| private Properties scanClasses() throws IOException { |
| CodeSource codeSource = Main.class.getProtectionDomain().getCodeSource(); |
| // ensure special characters are decoded OK by uing the charset |
| final String sourceFile = URLDecoder.decode(codeSource.getLocation().getFile(),"UTF-8"); |
| Properties p = new Properties(); |
| if (sourceFile.endsWith(".jar")) { |
| JarFile jf = new JarFile(sourceFile); |
| Enumeration<JarEntry> e = jf.entries(); |
| while (e.hasMoreElements()) { |
| JarEntry je = e.nextElement(); |
| String name = je.getName(); |
| processFileName(name, p); |
| } |
| jf.close(); |
| } else { |
| File examples = new File(sourceFile, "examples"); // must match top level examples package name |
| if (examples.exists()) { |
| scanForClasses(sourceFile.length(), examples, p); |
| } else { |
| fail("Could not find examples classes: " + examples.getCanonicalPath()); |
| } |
| } |
| return p; |
| } |
| |
| private static void scanForClasses(int rootLength, File current, Properties p) { |
| for(File file : current.listFiles()) { |
| if (file.isDirectory()) { |
| scanForClasses(rootLength, file, p); |
| } else { |
| processFileName(file.getPath().substring(rootLength), p); |
| } |
| } |
| } |
| |
| private static void processFileName(String name, Properties p) { |
| if (!name.endsWith(".class") |
| || name.contains("$") // subclasses |
| || name.equals("examples/Main.class") // the initial class, don't want to add that |
| || !hasMainMethod(name) |
| ) { |
| return; |
| } |
| name = name.replace(".class", ""); |
| final int lastSep = name.lastIndexOf('/'); |
| final String alias = name.substring(lastSep+1); |
| if (p.containsKey(alias)) { |
| System.out.printf("Duplicate alias: %-25s %s %s %n",alias,name,p.getProperty(alias)); |
| } else { |
| p.setProperty(alias, name); |
| } |
| } |
| |
| private static boolean hasMainMethod(String name) { |
| name = name.replace(".class", ""); |
| name = name.replace("/", "."); |
| try { |
| Class<?> clazz = Class.forName(name, false, MainTest.class.getClassLoader()); |
| clazz.getMethod("main", new Class[]{String[].class}); |
| return true; |
| } catch (ClassNotFoundException e) { |
| System.out.println("Cannot find " + name); |
| return false; |
| } catch (NoSuchMethodException e) { |
| return false; |
| } catch (SecurityException e) { |
| e.printStackTrace(); |
| } |
| return true; |
| } |
| } |