cache.maxSize = 8
    taskFaker.runNextTask()
    set("a", "aa", "aa")
    set("b", "bb", "bbb")

    // Cause the cache trim job to fail.
    filesystem.setFaultyDelete(cacheDir / "a.0", true)
    taskFaker.runNextTask()

    // Confirm we still allow snapshot reads after a trim failure.
    assertValue("a", "aa", "aa")
    assertValue("b", "bb", "bbb")

    // Allow the test to clean up.

    assertEquals("", Strings.commonPrefix("xyz", "abcde"));
    assertEquals("", Strings.commonPrefix("xyz", "abcxyz"));
    assertEquals("a", Strings.commonPrefix("abc", "aaaaa"));
    assertEquals("aa", Strings.commonPrefix("aa", "aaaaa"));
    assertEquals("abc", Strings.commonPrefix(new StringBuilder("abcdef"), "abcxyz"));

    // Identical valid surrogate pairs.
    assertEquals(

[
  {
    "comment": "Label with hyphens in 3rd and 4th position",
    "input": "aa--",
    "output": "aa--"
  },
  {
    "input": "a†--",
    "output": "xn--a---kp0a"
  },
  {
    "input": "ab--c",
    "output": "ab--c"
  },
  {
    "comment": "Label with leading hyphen",
    "input": "-x",
    "output": "-x"
  },
  {
    "input": "-†",
    "output": "xn----xhn"
  },
  {
    "input": "-x.xn--zca",

    ImmutableList<String> empty = ImmutableList.of();
    ImmutableList<String> a = ImmutableList.of("a");
    ImmutableList<String> aa = ImmutableList.of("a", "a");
    ImmutableList<String> ab = ImmutableList.of("a", "b");
    ImmutableList<String> b = ImmutableList.of("b");

    testComparator(lexy, empty, a, aa, ab, b);

    new EqualsTester()
        .addEqualityGroup(lexy, Comparators.lexicographical(comparator))

aa: Afaraf
ab: аҧсуа бызшәа
ae: avesta
af: Afrikaans
ak: Akan
am: አማርኛ
an: aragonés
ar: اللغة العربية
as: অসমীয়া
av: авар мацӀ
ay: aymar aru
az: azərbaycan dili
ba: башҡорт теле
be: беларуская мова
bg: български език
bh: भोजपुरी
bi: Bislama
bm: bamanankan
bn: বাংলা
bo: བོད་ཡིག
br: brezhoneg
bs: bosanski jezik
ca: Català
ce: нохчийн мотт
ch: Chamoru
co: corsu
cr: ᓀᐦᐃᔭᐍᐏᐣ
cs: čeština

    assertThat(parse("http://${name251}a./").toString()).isEqualTo("http://${name251}a./")
    assertThat(parse("http://${name251}aa/").toString()).isEqualTo("http://${name251}aa/")
    assertInvalid("http://${name251}aa./", "Invalid URL host: \"${name251}aa.\"")
  }

  @Test
  fun labelIsEmpty() {
    assertInvalid("http:///", "Invalid URL host: \"\"")

        SuggestResponse response2 = suggester.suggest().setQuery("-a").setSuggestDetail(true).execute().getResponse();
        assertEquals(2, response2.getNum());

        SuggestResponse response3 = suggester.suggest().setQuery("-aa-").setSuggestDetail(true).execute().getResponse();
        assertEquals(1, response3.getNum());
    }

    @Test
    public void test_getNum() throws Exception {
        SuggestItem[] items = getItemSet1();

        assertTrue(StringUtil.endsWithIgnoreCase("aaa_hoge", "HOge"));
        assertFalse(StringUtil.endsWithIgnoreCase("setHogeaa", "Aaa"));
        assertFalse(StringUtil.endsWithIgnoreCase("aa", "Aaa"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testStartsWithIgnoreCase() throws Exception {
        assertTrue(StringUtil.startsWithIgnoreCase("isHoge", "is"));

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