Mmastodon BusinessBanking first seen 17 h ago, last 9 h ago, peak #7
Python test fixture exposes allocation bug in banking ledger
Original: A 100-unit Python fixture exposes a balanced total with wrong customer allocations. Twelve tests cover backing, reservat
A developer has built a 100-unit Python test fixture that reveals a ledger balancing to the correct total while individual customer allocations are wrong. Twelve tests cover backing, reservations and invalid snapshots, aiming to catch faults that aggregate checks miss. The example is being shared as a lesson in financial software testing, where totals can look sound even when per-account balances are incorrect.
Why now: It illustrates a subtle but consequential class of banking software bugs that simple balance tests miss, resonating with developers in fintech.
Evidence
- A 100-unit Python fixture exposes a balanced total with wrong customer allocations. Twelve tests cover backing, reservations and invalid snapshots. # blockchain # fintech # architecture # testing # software # coding # development # engineering # inclusive # community Omnibus vs… · hackaday@www.urbanmind.net · 2
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