modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: shift,\n  },\n\n  /**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unit-less, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n...

      )
    assertThat(conditionalRequest.headers["If-Modified-Since"])
      .isEqualTo(lastModifiedDate)
  }

  @Test
  fun maxAgeInThePastWithDateHeaderButNoLastModifiedHeader() {
    // Chrome interprets max-age relative to the local clock. Both our cache
    // and Firefox both use the earlier of the local and server's clock.
    assertNotCached(
      MockResponse
        .Builder()