'Handle when the app is not in the app map (as result of filtering).'

def test_multi_no_exist(self):

    apps = [mkt.site.tests.app_factory(), mkt.site.tests.app_factory()]
    app_map = {apps[0].id: apps[0].get_indexer().extract_document(apps[0].id)}
    field = AppESField(many=True)
    field.context = {'app_map': app_map, 'request': mkt.site.tests.req_factory_factory('')}
    data = field.to_representation([app.id for app in apps])
    eq_(len(data), 1)
    eq_(data[0]['id'], apps[0].id)
