What is Edge Case?
A scenario that happens at the extreme limits of normal use. Edge cases break products that were only tested against the happy path.
normal ok · 10 GB jams the slot
An edge case is a scenario at the...
Write it in your own words in the app.
In real work
Write edge cases for the file upload feature. What happens with a 0-byte file, a 10GB file, a duplicate name, and no internet?
In the illustration
An ordinary box feeds through cleanly; a paper-thin 0 B card slips past the sensor, then the huge 10 GB crate rams the slot and jams it.
List every edge case for the export in your docs tool: no data, 100,000 rows, a name with a comma, a user removed mid-month.
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