$ diff original/shipping.js mutant/shipping.js
3c3
<   return orderTotal >= 100 ? 0 : 6.95;
---
>   return orderTotal > 100 ? 0 : 6.95;
$ sh run_all.sh
== tests_weak on original/shipping.js
  ok   ordinary small order 30
  ok   large order 250
exit code: 0
== tests_strong on original/shipping.js
  ok   ordinary small order 30
  ok   large order 250
  ok   just below limit 99.99
  ok   exactly on limit 100
  ok   zero order
exit code: 0
== tests_weak on mutant/shipping.js
  ok   ordinary small order 30
  ok   large order 250
exit code: 0
== tests_strong on mutant/shipping.js
  ok   ordinary small order 30
  ok   large order 250
  ok   just below limit 99.99
  FAIL exactly on limit 100: got 6.95, expected 0
  ok   zero order
exit code: 1
$ sha256sum -c orig.sha
original/shipping.js: OK
