// Confirm this range's index byte is increasing.
      val rangeStarts = mutableListOf<Int>()
      for (i in rangePos until rangeLimit step 4) {
        rangeStarts += compactTable.ranges[i].code
      }
      assertThat(rangeStarts).isEqualTo(rangeStarts.sorted())
    }
  }

  @Test fun deviations() {
    assertThat("ß".map()).isEqualTo("ß")

    private final char[] rangeStarts;
    private final char[] rangeEnds;

    RangesMatcher(String description, char[] rangeStarts, char[] rangeEnds) {
      this.description = description;
      this.rangeStarts = rangeStarts;
      this.rangeEnds = rangeEnds;
      checkArgument(rangeStarts.length == rangeEnds.length);
      for (int i = 0; i < rangeStarts.length; i++) {

              1 -> MappedRange.Inline1(rangeStart, mapping.mappedTo)
              2 -> MappedRange.Inline2(rangeStart, mapping.mappedTo)
              else -> MappedRange.External(rangeStart, mapping.mappedTo)
            }
          }

        TYPE_IGNORED, TYPE_VALID, TYPE_DISALLOWED -> {
          MappedRange.Constant(rangeStart, mapping.type)
        }

        mappingOf(
          sourceCodePoint0 = 0,
          sourceCodePoint1 = 0,
          mappedToCodePoints = listOf((1 shl 18) - 1),
        ),
      ),
    ).isEqualTo(
      InlineDelta(
        rangeStart = 0,
        codepointDelta = InlineDelta.MAX_VALUE,
      ),
    )

    assertThat(
      inlineDeltaOrNull(
        mappingOf(
          sourceCodePoint0 = 0,
          sourceCodePoint1 = 0,