assertEquals("", Strings.commonSuffix("abcde", "xyz"));
    assertEquals("", Strings.commonSuffix("xyz", "abcde"));
    assertEquals("", Strings.commonSuffix("xyz", "xyzabc"));
    assertEquals("c", Strings.commonSuffix("abc", "ccccc"));
    assertEquals("aa", Strings.commonSuffix("aa", "aaaaa"));
    assertEquals("abc", Strings.commonSuffix(new StringBuilder("xyzabc"), "xxxabc"));

    // Identical valid surrogate pairs.
    assertEquals(

      assertThat(inV1.readByte()).isEqualTo('A'.code.toByte())

      val v1Updater = cache.edit("k1")!!
      v1Updater.setString(0, "CCcc")
      v1Updater.setString(1, "DDdd")
      v1Updater.commit()

      cache["k1"]!!.use { snapshot2 ->
        snapshot2.assertValue(0, "CCcc")
        snapshot2.assertValue(1, "DDdd")
      }

      assertThat(inV1.readByte()).isEqualTo('a'.code.toByte())