UrlConnectionCacheTest.java 文件源码

@Test public void defaultExpirationDateConditionallyCached() throws Exception {
  //      last modified: 115 seconds ago
  //             served:  15 seconds ago
  //   default lifetime: (115 - 15) / 10 = 10 seconds
  //            expires:  10 seconds from served date = 5 seconds ago
  String lastModifiedDate = formatDate(-115, TimeUnit.SECONDS);
  RecordedRequest conditionalRequest = assertConditionallyCached(
      new MockResponse().addHeader("Last-Modified: " + lastModifiedDate)
          .addHeader("Date: " + formatDate(-15, TimeUnit.SECONDS)));
  assertEquals(lastModifiedDate, conditionalRequest.getHeader("If-Modified-Since"));
}