// @Test public void hashCompare() throws Exception { String hash1 = CrawlerUtils.extractFileHashSHA256(getClass().getResource("/abcd.pdf").getFile()); String hash2 = CrawlerUtils.extractFileHashSHA256(getClass().getResource("/abcd2.pdf").getFile()); String hash3 = CrawlerUtils.extractFileHashSHA256(getClass().getResource("/qwer.pptx").getFile()); String hash4 = CrawlerUtils.extractFileHashSHA256(getClass().getResource("/qwer2.pptx").getFile()); assertTrue(hash1.equals(hash2)); assertTrue(hash1.equals(hash1)); assertTrue(hash3.equals(hash3)); assertTrue(hash3.equals(hash4)); assertFalse(hash1.equals(hash3)); }