fun buildIdnaMappingTableData(table: SimpleIdnaMappingTable): IdnaMappingTableData {
  val simplified = mergeAdjacentRanges(table.mappings)
  val withoutSectionSpans = withoutSectionSpans(simplified)
  val sections = sections(withoutSectionSpans)

  val rangesBuffer = Buffer()
  val mappingsBuffer = StringBuilder()
  val sectionIndexBuffer = Buffer()

  var previousMappedRanges: List<MappedRange>? = null

        ),
      ),
    ).containsExactly(
      Mapping(0x0000, 0x002e, TYPE_VALID, ByteString.EMPTY),
    )
  }

  @Test fun withSectionStartsSplits() {
    assertThat(
      withoutSectionSpans(
        listOf(
          Mapping(0x40000, 0x40180, TYPE_DISALLOWED, ByteString.EMPTY),
        ),
      ),
    ).containsExactly(
      Mapping(0x40000, 0x4007f, TYPE_DISALLOWED, ByteString.EMPTY),