@Test
public void parseCacheHeaders_noHeaders() {

    Cache.Entry entry = HttpHeaderParser.parseCacheHeaders(response);
    assertNotNull(entry);
    assertNull(entry.etag);
    assertEquals(0, entry.serverDate);
    assertEquals(0, entry.lastModified);
    assertEquals(0, entry.ttl);
    assertEquals(0, entry.softTtl);
}