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- /*
- * Copyright 2000-2014 Vaadin Ltd.
- *
- * 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 com.vaadin.tests.tb3;
-
- import java.io.File;
- import java.io.IOException;
- import java.lang.reflect.Modifier;
- import java.net.JarURLConnection;
- import java.net.URISyntaxException;
- import java.net.URL;
- import java.util.ArrayList;
- import java.util.Collection;
- import java.util.Collections;
- import java.util.Comparator;
- import java.util.Enumeration;
- import java.util.List;
- import java.util.jar.JarEntry;
-
- public class TB3TestLocator {
- /**
- * Traverses the directory on the classpath (inside or outside a Jar file)
- * specified by 'basePackage'. Collects all classes inside the location
- * which can be assigned to 'baseClass' except for classes inside packages
- * listed in 'ignoredPackages'.
- *
- * @param baseClass
- * @param basePackage
- * @param ignorePackages
- * @return
- */
- public Class<?>[] findTests(Class<? extends AbstractTB3Test> baseClass,
- String basePackage, String[] ignorePackages) {
- try {
- List<?> l = findClasses(baseClass, basePackage, ignorePackages);
- return l.toArray(new Class[] {});
- } catch (IOException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- return null;
- }
-
- /**
- * Traverses the directory on the classpath (inside or outside a Jar file)
- * specified by 'basePackage'. Collects all classes inside the location
- * which can be assigned to 'baseClass' except for classes inside packages
- * listed in 'ignoredPackages'.
- *
- * @param baseClass
- * @param basePackage
- * @param ignoredPackages
- * @return
- * @throws IOException
- */
- protected <T> List<Class<? extends T>> findClasses(Class<T> baseClass,
- String basePackage, String[] ignoredPackages) throws IOException {
- List<Class<? extends T>> classes = new ArrayList<Class<? extends T>>();
- String basePackageDirName = "/" + basePackage.replace('.', '/');
- URL location = baseClass.getResource(basePackageDirName);
- if (location.getProtocol().equals("file")) {
- try {
- File f = new File(location.toURI());
- if (!f.exists()) {
- throw new IOException("Directory " + f.toString()
- + " does not exist");
- }
- findPackages(f, basePackage, baseClass, classes,
- ignoredPackages);
- } catch (URISyntaxException e) {
- throw new IOException(e.getMessage());
- }
- } else if (location.getProtocol().equals("jar")) {
- JarURLConnection juc = (JarURLConnection) location.openConnection();
- findClassesInJar(juc, basePackage, baseClass, classes);
- }
-
- Collections.sort(classes, new Comparator<Class<? extends T>>() {
-
- @Override
- public int compare(Class<? extends T> o1, Class<? extends T> o2) {
- return o1.getName().compareTo(o2.getName());
- }
-
- });
-
- return classes;
- }
-
- /**
- * Traverses the given directory and collects all classes which are inside
- * the given 'javaPackage' and can be assigned to the given 'baseClass'. The
- * found classes are added to 'result'.
- *
- * @param parent
- * The directory to traverse
- * @param javaPackage
- * The java package which 'parent' contains
- * @param baseClass
- * The class which the target classes extend
- * @param result
- * The collection to which found classes are added
- * @param ignoredPackages
- * A collection of packages (including sub packages) to ignore
- */
- private <T> void findPackages(File parent, String javaPackage,
- Class<T> baseClass, Collection<Class<? extends T>> result,
- String[] ignoredPackages) {
- for (String ignoredPackage : ignoredPackages) {
- if (javaPackage.equals(ignoredPackage)) {
- return;
- }
- }
-
- for (File file : parent.listFiles()) {
- if (file.isDirectory()) {
- findPackages(file, javaPackage + "." + file.getName(),
- baseClass, result, ignoredPackages);
- } else if (file.getName().endsWith(".class")) {
- String fullyQualifiedClassName = javaPackage + "."
- + file.getName().replace(".class", "");
- addClassIfMatches(result, fullyQualifiedClassName, baseClass);
- }
- }
-
- }
-
- /**
- * Traverses a Jar file using the given connection and collects all classes
- * which are inside the given 'javaPackage' and can be assigned to the given
- * 'baseClass'. The found classes are added to 'result'.
- *
- * @param javaPackage
- * The java package containing the classes (classes may be in a
- * sub package)
- * @param baseClass
- * The class which the target classes extend
- * @param result
- * The collection to which found classes are added
- * @throws IOException
- */
- private <T> void findClassesInJar(JarURLConnection juc, String javaPackage,
- Class<T> baseClass, Collection<Class<? extends T>> result)
- throws IOException {
- String javaPackageDir = javaPackage.replace('.', '/');
- Enumeration<JarEntry> ent = juc.getJarFile().entries();
- while (ent.hasMoreElements()) {
- JarEntry e = ent.nextElement();
- if (e.getName().endsWith(".class")
- && e.getName().startsWith(javaPackageDir)) {
- String fullyQualifiedClassName = e.getName().replace('/', '.')
- .replace(".class", "");
- addClassIfMatches(result, fullyQualifiedClassName, baseClass);
- }
- }
- }
-
- /**
- * Verifies that the class represented by 'fullyQualifiedClassName' can be
- * loaded, assigned to 'baseClass' and is not an abstract or anonymous
- * class.
- *
- * @param result
- * The collection to add to
- * @param fullyQualifiedClassName
- * The candidate class
- * @param baseClass
- * The class 'fullyQualifiedClassName' should be assignable to
- */
- @SuppressWarnings("unchecked")
- protected <T> void addClassIfMatches(Collection<Class<? extends T>> result,
- String fullyQualifiedClassName, Class<T> baseClass) {
- try {
- // Try to load the class
-
- Class<?> c = Class.forName(fullyQualifiedClassName);
- if (!baseClass.isAssignableFrom(c)) {
- return;
- }
- if (!includeInSuite(c)) {
- return;
- }
-
- if (!Modifier.isAbstract(c.getModifiers()) && !c.isAnonymousClass()) {
- result.add((Class<? extends T>) c);
- }
- } catch (Exception e) {
- // Could ignore that class cannot be loaded
- e.printStackTrace();
- } catch (LinkageError e) {
- // Ignore. Client side classes will at least throw LinkageErrors
- }
-
- }
-
- /**
- * @return true if the class should be included in the suite, false if not
- */
- private boolean includeInSuite(Class<?> c) {
- if (c.getAnnotation(ExcludeFromSuite.class) != null) {
- return false;
- }
-
- IncludeIfProperty includeIfProperty = c
- .getAnnotation(IncludeIfProperty.class);
- if (includeIfProperty != null) {
- String includeValue = includeIfProperty.value();
- String systemPropertyValue = System.getProperty(includeIfProperty
- .property());
- if (!includeValue.equals(systemPropertyValue)) {
- return false;
- }
- }
-
- return true;
- }
- }
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