Fifteen rows across five tasks said the mechanism was there and the test was
not. Each of these is a case where being wrong would be silent.
- the price rows must add up to the final amount. The chain test checks every
number individually, which stays green if a new row is added and left out of
the total; this checks the relationship itself.
- a fixed deposit beats a percentage one, and neither can exceed the final
amount — charging a deposit larger than the bill puts the patient in debt
before the visit.
- an appointment booked without a service still gets an invoice. Slot mode has
no service, and without this the financial report is short a row with nothing
to say which.
- the four accuracy thresholds, each tested on its own boundary. One step off
and either everything is red (so nobody looks) or nothing is (so the report
is pointless). Includes a short-running service, since the deviation is
measured on its absolute value.
- all six policy templates build a policy that survives the normal validation,
simulation and activation path. A template is a shortcut, not a second road:
if one of them produced something the validator rejects, a user could create
a rule in one click that never works.
- simulation leaves nothing pending for a later flush in the same request. That
is what the finally-rollback-clear is for, and the failure would surface in
the next operation rather than in the sandbox.
The course controller was reading $this->credits without it being injected —
phpstan caught it; the package-shortfall path had no test yet and would have
500'd on the first course that had a package.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
