unit testing - How do I test a Java Code Generator in NetBeans? -

i starting program code generator netbeans 8, , having trouble figuring out best way test invoke() method.

the code generator want test this:

(imports here)  public class mycodegenerator implements codegenerator {       private final jtextcomponent textcomponent;       private final compilationcontroller controller;       mycodegenerator(final lookup context) {          textcomponent = context.lookup(jtextcomponent.class);          controller = context.lookup(compilationcontroller.class);      }       @override      public string getdisplayname() {          return "generate code...";      }       /**       * invoked when user chooses generator insert code       * dialog       */      @override      public void invoke() {          if (textcomponent != null && controller != null) {              controller.tophase(phase.resolved);              //do more things source code;          }         }  } 

i want use mocked (mockito) object lookup, pass mycodegenerator's constructor. mock should return jtextcomponent , compilationcontroller.

i know can provide jtextcomponent test code, hit wall when need provide compilationcontroller.

i can create temporary java source file same content jtextcomponent, not find way create compilationcontroller (or workingcopy) it.

this tried far (my test method):

@test  public void testinvoke() throws parseexception, ioexception {      system.out.println("invoke");      final extractcontrollertask extracttask = new extractcontrollertask(              phase.resolved);      final stringbuilder builder = new stringbuilder(100);      final jtextcomponent textcomponent;      final document document;      final fileobject javatestfile;      final outputstream outputstream;      final javasource source;       builder.append("public class clazz {");      builder.append("private int = 2;");      builder.append("}");       textcomponent = new jtextarea(builder.tostring());      document = textcomponent.getdocument();      document.putproperty(basedocument.mime_type_prop, "text/x-java");       javatestfile = fileutil.createdata(new file(              "/tmp/javatestsourcefile.java"));      outputstream = javatestfile.getoutputstream();      outputstream.write(builder.tostring().getbytes());      outputstream.flush();       source = javasource.forfileobject(javatestfile);      assertnotnull(source);      source.runuseractiontask(extracttask, true);      assertnotnull(extracttask.controller); //fails here  }  

this code extractcontrollertask:

private static class extractcontrollertask implements          task<compilationcontroller> {       private final phase targetphase;       private compilationcontroller controller;       private extractcontrollertask(final phase phase) {          this.targetphase = phase;      }       public void run(final compilationcontroller compcontroler) {          try {              compcontroler.tophase(this.targetphase);              this.controller = compcontroler;          } catch (ioexception ioe) {              throw new runtimeexception(ioe);          }      }   } 

what surprises me run method in extractcontrollertask never called.

i need test code can't find proper way. maybe approach wrong.

can suggest how achieve this?