FA-12543 / Genomic coordinate mapping / Member archive
Negative-strand transcript offsets visit exons in reference order · case 03
Negative-strand transcript offsets visit exons in reference order.
Case contract
Map zero-based transcript offset across disjoint half-open exons to a reference base; return None outside transcript.
Why this case matters
An abstract offline coordinate model isolates this software mapping defect; it does not model biological interpretation.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| minus first | 30 | 42 | Failed |
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