VirtualWebappLoader loader = new VirtualWebappLoader();
loader.setContainer(ctx);
ctx.setLoader(loader);
ctx.setResources(new FileDirContext());
ctx.resourcesStart();
File dir = new File("test/webapp-3.0-fragments/WEB-INF/lib");
loader.setVirtualClasspath(dir.getAbsolutePath() + "/*.jar");
loader.start();
String[] repos = loader.getRepositories();
assertEquals(2,repos.length);