randalcatSet = rfc3491.randalcatSet,
      lcatSet = rfc3491.lcatSet,
    )

  @Test fun mappedToNothing() {
    assertThat(stringPrep("a\u00ADz")).isEqualTo("az")
    assertThat(stringPrep("a\u200Dz")).isEqualTo("az")
  }

  @Test fun caseFolding() {
    assertThat(stringPrep("localhost")).isEqualTo("localhost")
    assertThat(stringPrep("Localhost")).isEqualTo("localhost")

av.tr avellino.it averoy.no averøy.no avianca aviation.museum avocat.fr avocat.pro avocats.bj avoues.fr aw awaji.hyogo.jp aws awsglobalaccelerator.com awsmppl.com ax axa axis.museum aya.miyazaki.jp ayabe.kyoto.jp ayagawa.kagawa.jp ayase.kanagawa.jp az az.us azerbaijan.su azimuth.network azumino.nagano.jp azure azure-mobile.net azurestaticapps.net azurewebsites.net aéroport.ci b-data.io b.bg b.br b.se b.ssl.fastly.net ba ba.gov.br ba.it ba.leg.br babia-gora.pl baby babyblue.jp babymilk.jp backdrop.jp...

schools.nsw.edu.au

// aw : https://en.wikipedia.org/wiki/.aw
aw
com.aw

// ax : https://en.wikipedia.org/wiki/.ax
ax

// az : https://en.wikipedia.org/wiki/.az
az
com.az
net.az
int.az
gov.az
org.az
edu.az
info.az
pp.az
mil.az
name.az
pro.az
biz.az

// ba : http://nic.ba/users_data/files/pravilnik_o_registraciji.pdf
ba
com.ba
edu.ba
gov.ba
mil.ba
net.ba