    @Test
    public void isMaxStrategyworks() throws Exception {

        rxDownloader = builder
                .strategy(DownloadStrategy.MAX)
                .addFile("http://fakeURL.com/error-file.jpg")
                .build();

        List<FileContainer> res = rxDownloader.asList().blockingGet();
        res.forEach(fileContainer -> {
            Log.i("RxDownloader", "key" + fileContainer.getFilename() + ",value " + fileContainer.getUrl());
        });
        assertNotEquals(res.size(), 0);
        Assert.assertEquals(res.size(), 3);
    }