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README: test count and hand-over mutation testing #37

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vidit-16 merged 1 commit into from
Oct 7, 2026
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README: test count and hand-over mutation testing #37

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9 changes: 5 additions & 4 deletions README.md
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Expand Up @@ -217,7 +217,7 @@ check below.
.venv/Scripts/python.exe -m unittest discover -s tests -v
```

122 tests, with no network or AWS account needed. Besides accounts, reporting,
124 tests, with no network or AWS account needed. Besides accounts, reporting,
the desk flow from drop-off and two-sided hand-over to collection code, admin,
CSRF, rate limits, security headers
and uploads, they cover place names (aliases, misspellings, Kannada and Hindi,
Expand All @@ -236,11 +236,12 @@ Two more checks live in `tools/`:
map, place matching, Retrace, and that reporting and admin need a sign-in. It
only reads, so it is safe on the live site.
- **`tools/mutate.py`** is mutation testing for the code where a quiet bug would
hurt most: place matching, Retrace, collection codes, escalation and placing
reports. It makes one small change at a time (a comparison flipped, `and` for
hurt most: place matching, Retrace, collection codes, escalation, placing
reports and the two-sided hand-over. It makes one small change at a time (a comparison flipped, `and` for
`or`, a number nudged) and checks that the tests notice. Its first run found a
real bug ("power bank" matched the bank in the Main Block) and ten untested
behaviours, all now covered. What survives now is harmless: timestamp
behaviours, all now covered, and every hand-over mutant is caught. What
survives elsewhere is harmless: timestamp
boundaries to the microsecond, rounding, and score weights that do not change
the order of results.

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