thirdSignal.countDown();
        result.set(1, cache.getUnchecked(key));
        doneSignal.countDown();
      }
    }.start();

    // give the second get a chance to run; it is okay for this to be racy
    // as the end result should be the same either way
    thirdSignal.await();
    Thread.yield();

    // Expand!
    CacheTesting.forceExpandSegment(cache, key);

    assertThat(url.resolve("g#s/./x")).isEqualTo(parse("http://a/b/c/g#s/./x"))
    assertThat(url.resolve("g#s/../x")).isEqualTo(parse("http://a/b/c/g#s/../x"))
    // "http:g" also okay.
    assertThat(url.resolve("http:g")).isEqualTo(parse("http://a/b/c/g"))
  }

  @Test
  fun parseAuthoritySlashCountDoesntMatter() {
    assertThat(parse("http:host/path"))

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