@Test public void getProductByPath() { URL valid = null; URL invalid = null; try { valid = new URL("file:/home/lambert/test/prod5"); invalid = new URL("file:/home/lambert/test/prod512"); } catch (MalformedURLException e) { Assert.fail("Malformed URL !", e); } Product product = dao.getProductByPath(valid); Assert.assertNotNull(product); Assert.assertEquals(product.getId().intValue(), 5); product = dao.getProductByPath(invalid); Assert.assertNull(product); product = dao.getProductByPath(null); Assert.assertNull(product); }