added support for interactive JavaScript debugger

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@20647 71c3de6d-444a-0410-be80-ed276b4c234a

test/pom.xml

@@ -129,14 +129,19 @@ THE SOFTWARE.
       		<artifactId>xml-apis</artifactId>
       	</exclusion>
       </exclusions>
-	</dependency>
+    </dependency>
 
     <dependency><!-- temporary, until we bump to new htmlunit -->
       <groupId>org.jvnet.hudson</groupId>
       <artifactId>htmlunit-core-js</artifactId>
       <version>2.2-hudson-2</version>
     </dependency>
-    
+
+    <dependency>
+      <groupId>org.jvnet.hudson</groupId>
+      <artifactId>embedded-rhino-debugger</artifactId>
+      <version>1.0</version>
+    </dependency>
     <dependency>
       <!-- for testing JNLP launch. -->
       <groupId>org.jvnet.hudson</groupId>

test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java

@@ -120,6 +120,7 @@ import org.mortbay.jetty.webapp.WebAppContext;
 import org.mortbay.jetty.webapp.WebXmlConfiguration;
 import org.mozilla.javascript.Context;
 import org.mozilla.javascript.ContextFactory;
+import org.mozilla.javascript.tools.shell.JSConsole;
 import org.w3c.css.sac.CSSException;
 import org.w3c.css.sac.CSSParseException;
 import org.w3c.css.sac.ErrorHandler;
@@ -480,6 +481,22 @@ public abstract class HudsonTestCase extends TestCase {
         new BufferedReader(new InputStreamReader(System.in)).readLine();
     }
 
+    /**
+     * Starts an interactive JavaScript debugger, and break at the next JavaScript execution.
+     *
+     * <p>
+     * This is useful during debugging a test so that you can step execute and inspect state of JavaScript.
+     * This will launch a Swing GUI, and the method returns immediately.
+     *
+     * <p>
+     * Note that installing a debugger appears to make an execution of JavaScript substantially slower.
+     */
+    public void interactiveJavaScriptDebugger() {
+        org.mozilla.javascript.tools.debugger.Main.mainEmbedded("Rhino debugger: "+getName());
+        // this can be too late, depending on when this method is invoked.
+        Functions.DEBUG_YUI = true;
+    }
+
     /**
      * Returns the last item in the list.
      */