private static void checkSanity(BloomFilter<Object> bf) {
    assertFalse(bf.mightContain(new Object()));
    assertFalse(bf.apply(new Object()));
    for (int i = 0; i < 100; i++) {
      Object o = new Object();
      bf.put(o);
      assertTrue(bf.mightContain(o));
      assertTrue(bf.apply(o));
    }
  }

  public void testCopy() {

    assertEscaping(e, "%DF%BF", '\u07ff'); // xx-11111,x-111111
    assertEscaping(e, "%E0%A0%80", '\u0800'); // xxx-0000,x-100000,x-00,0000
    assertEscaping(e, "%EF%BF%BF", '\uffff'); // xxx-1111,x-111111,x-11,1111
    assertUnicodeEscaping(e, "%F0%90%80%80", '\uD800', '\uDC00');
    assertUnicodeEscaping(e, "%F4%8F%BF%BF", '\uDBFF', '\uDFFF');

    // simple string tests

    assertEscaping(e, "%DF%BF", '\u07ff'); // xx-11111,x-111111
    assertEscaping(e, "%E0%A0%80", '\u0800'); // xxx-0000,x-100000,x-00,0000
    assertEscaping(e, "%EF%BF%BF", '\uffff'); // xxx-1111,x-111111,x-11,1111
    assertUnicodeEscaping(e, "%F0%90%80%80", '\uD800', '\uDC00');
    assertUnicodeEscaping(e, "%F4%8F%BF%BF", '\uDBFF', '\uDFFF');

    // simple string tests

  private static void checkSanity(BloomFilter<Object> bf) {
    assertFalse(bf.mightContain(new Object()));
    assertFalse(bf.apply(new Object()));
    assertFalse(bf.test(new Object()));
    for (int i = 0; i < 100; i++) {
      Object o = new Object();
      bf.put(o);
      assertTrue(bf.mightContain(o));
      assertTrue(bf.apply(o));
      assertTrue(bf.test(o));
    }
  }

  public void testCopy() {

    final int numHashFunctions;
    final Funnel<? super T> funnel;
    final Strategy strategy;

    SerialForm(BloomFilter<T> bf) {
      this.data = LockFreeBitArray.toPlainArray(bf.bits.data);
      this.numHashFunctions = bf.numHashFunctions;
      this.funnel = bf.funnel;
      this.strategy = bf.strategy;
    }

    Object readResolve() {

ow?ywal?zifp??f!.&aterg?bew&-no,etis321,?drp?e&c&itsuj-reissiuh?narf-ne-setsitned-sneigrurihc,?lipuog,rianiretev,?hny,i&cc?rgabmahc,?m&o&c?n??t??n&eicamrahp,icedem,?ossa?pohsdaerpsym,s&e&lbatpmoc-strepxe,riaton,tsitned-sneigrurihc,uova??o&-x&bf,obeerf,?x&bf,obeerf,???t&acova,oor-ne,rop:orea,,?vuog?xobided,?avc7ylqbgm--nx?s??g!.&etiselpmis,gro?moc?ten?ude?vog?ysrab,??h!.&eman?mo&c?rf??yldnerb.pohs,zi??ur??i!.&a&61f4a3abgm--nx?rf4a3abgm--nx??ca?di?egdenavra,g&olbatsiv,ro??hcs?oc?ten?vog?نار&يا?یا?...

    assertThat(parse("http://host/\u0000").encodedPath).isEqualTo("/%00")
    assertThat(parse("http://host/\u0008").encodedPath).isEqualTo("/%08")
    assertThat(parse("http://host/\ufffd").encodedPath).isEqualTo("/%EF%BF%BD")
  }

  @Test
  fun usernameCharacters() {
    if (!isJvm) return // TODO: this test is broken on non-JVM platforms.
    UrlComponentEncodingTester
      .newInstance()
      .override(