SWTBot中junit4通知RunNotifier的使用

???????????? 在junit4中的监听接口为RunnerListener，具体的实现为：

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package org.junit.runner.notification;import org.junit.runner.Description;import org.junit.runner.Result;public class RunListener {public void testRunStarted(Description description) throws Exception {}public void testRunFinished(Result result) throws Exception {}public void testStarted(Description description) throws Exception {}public void testFinished(Description description) throws Exception {}public void testFailure(Failure failure) throws Exception {}public void testAssumptionFailure(Failure failure) {}public void testIgnored(Description description) throws Exception {}}

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通知的类为：

package org.junit.runner.notification;import java.util.ArrayList;import java.util.Collections;import java.util.Iterator;import java.util.List;import org.junit.runner.Description;import org.junit.runner.Result;public class RunNotifier {private final List<RunListener> fListeners;private boolean fPleaseStop;public RunNotifier() {this.fListeners = Collections.synchronizedList(new ArrayList());this.fPleaseStop = false;}public void addListener(RunListener listener) {this.fListeners.add(listener);}public void removeListener(RunListener listener) {this.fListeners.remove(listener);}public void fireTestRunStarted(Description description) {new SafeNotifier(description) {protected void notifyListener(RunListener each) throws Exception {each.testRunStarted(this.val$description);}}.run();}public void fireTestRunFinished(Result result) {new SafeNotifier(result) {protected void notifyListener(RunListener each) throws Exception {each.testRunFinished(this.val$result);}}.run();}public void fireTestStarted(Description description)throws StoppedByUserException {if (this.fPleaseStop)throw new StoppedByUserException();new SafeNotifier(description) {protected void notifyListener(RunListener each) throws Exception {each.testStarted(this.val$description);}}.run();}public void fireTestFailure(Failure failure) {new SafeNotifier(failure) {protected void notifyListener(RunListener each) throws Exception {each.testFailure(this.val$failure);}}.run();}public void fireTestAssumptionFailed(Failure failure) {new SafeNotifier(failure) {protected void notifyListener(RunListener each) throws Exception {each.testAssumptionFailure(this.val$failure);}}.run();}public void fireTestIgnored(Description description) {new SafeNotifier(description) {protected void notifyListener(RunListener each) throws Exception {each.testIgnored(this.val$description);}}.run();}public void fireTestFinished(Description description) {new SafeNotifier(description) {protected void notifyListener(RunListener each) throws Exception {each.testFinished(this.val$description);}}.run();}public void pleaseStop() {this.fPleaseStop = true;}public void addFirstListener(RunListener listener) {this.fListeners.add(0, listener);}private abstract class SafeNotifier {void run() {Iterator all;synchronized (RunNotifier.this.fListeners) {for (all = RunNotifier.this.fListeners.iterator(); all.hasNext();)try {notifyListener((RunListener) all.next());} catch (Exception e) {all.remove();RunNotifier.this.fireTestFailure(new Failure(Description.TEST_MECHANISM, e));}}}protected abstract void notifyListener(RunListener paramRunListener)throws Exception;}

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SWTBot的截屏通知为：

package org.eclipse.swtbot.swt.finder.junit;import org.apache.log4j.Logger;import org.eclipse.swtbot.swt.finder.utils.SWTBotPreferences;import org.eclipse.swtbot.swt.finder.utils.SWTUtils;import org.junit.runner.notification.Failure;import org.junit.runner.notification.RunListener;/** * Captures screenshots on failure notifications. * * @author Hans Schwaebli (Bug 259787) * @version $Id$ * @noinstantiate This class is not intended to be instantiated by clients. */public final class ScreenshotCaptureListener extends RunListener {/** The logger. */private static Loggerlog= Logger.getLogger(SWTBotApplicationLauncherClassRunner.class);/** Counts the screenshots to determine if maximum number is reached. */private static intscreenshotCounter= 0;public void testFailure(Failure failure) throws Exception {captureScreenshot(failure);}private void captureScreenshot(Failure failure) {try {int maximumScreenshots = SWTBotPreferences.MAX_ERROR_SCREENSHOT_COUNT;String fileName = SWTBotPreferences.SCREENSHOTS_DIR + "/" + failure.getTestHeader() + "." + SWTBotPreferences.SCREENSHOT_FORMAT.toLowerCase(); //$NON-NLS-1$if (++screenshotCounter <= maximumScreenshots) {captureScreenshot(fileName);} else {log.info("No screenshot captured for '" + failure.getTestHeader() + "' because maximum number of screenshots reached: " //$NON-NLS-1$ + maximumScreenshots);}} catch (Exception e) {log.warn("Could not capture screenshot", e); //$NON-NLS-1$}}private boolean captureScreenshot(String fileName) {return SWTUtils.captureScreenshot(fileName);}public int hashCode() {return 31;}public boolean equals(Object obj) {if (this == obj)return true;if (obj == null)return false;if (getClass() != obj.getClass())return false;return true;}}

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