string containing both a certificate and PKCS #8-encoded private key.

    ```kotlin
    val heldCertificate = HeldCertificate.decode("""
        |-----BEGIN CERTIFICATE-----
        |MIIBYTCCAQegAwIBAgIBKjAKBggqhkjOPQQDAjApMRQwEgYDVQQLEwtlbmdpbmVl
        |cmluZzERMA8GA1UEAxMIY2FzaC5hcHAwHhcNNzAwMTAxMDAwMDA1WhcNNzAwMTAx

    }

    if ("*." == pattern) {
      return false // Wildcard pattern for single-label domain name -- not permitted.
    }

    // Hostname must end with the region of pattern following the asterisk.
    val suffix = pattern.substring(1)
    if (!hostname.endsWith(suffix)) {
      return false // Hostname does not end with the suffix.
    }

      var month = -1
      var year = -1
      val matcher = TIME_PATTERN.matcher(s)

      while (pos < limit) {
        val end = dateCharacterOffset(s, pos + 1, limit, true)
        matcher.region(pos, end)

        when {
          hour == -1 && matcher.usePattern(TIME_PATTERN).matches() -> {
            hour = matcher.group(1).toInt()
            minute = matcher.group(2).toInt()

  fun journalWriteFailsDuringEdit(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    set("a", "a", "a")
    set("b", "b", "b")

    // We can't begin the edit if writing 'DIRTY' fails.
    filesystem.setFaultyWrite(journalFile, true)
    assertThat(cache.edit("c")).isNull()

    // Once the journal has a failure, subsequent writes aren't permitted.