final Group group = new Group(groupName).addResource(Resource.create("1.js")).addResource(Resource.create("2.js"));
final WroModelFactory modelFactory = WroTestUtils.simpleModelFactory(new WroModel().addGroup(group));
// the locator which returns the name of the resource as its content
final UriLocatorFactory locatorFactory = new SimpleUriLocatorFactory().addLocator(WroTestUtils.createResourceMockingLocator());
final ResourcePreProcessor failingPreProcessor = new ResourcePreProcessor() {
public void process(final Resource resource, final Reader reader, final Writer writer)
throws IOException {
throw new IOException("BOOM!");
}
};