Test Count & Typologies
Typologies
| Typology | What it covers |
|---|
| Nominal | Happy path — expected, successful behaviour |
| Boundary / Limits | Edge values: minimum, maximum, just-outside-bounds |
| Equivalence | Representative partitions |
| Negative | Invalid input, error handling, unexpected states |
Simple mode (default)
One global slider: total number of tests (2–32). Distribution is proportional and shown live in pills below the slider:
3 Nominal · 4 Boundary · 2 Equivalence · 2 Negative
Advanced mode
Click Customise per typology to set an individual slider for each selected typology.
- Range: 1–8 tests per typology
- Maximum total: 32 tests
- Running total displayed in real time
Click Back to simple mode to return. Your advanced configuration is preserved.
Persisted preferences
Both the mode (simple/advanced) and the values are saved to your ADO user account (test-count-config-v1). They persist across sessions and browser reloads.
A good starting point: 2 Nominal · 3 Boundary · 2 Equivalence · 2 Negative = 9 tests. This covers the critical paths without creating noise.
Why we cap at 32
Quality over quantity. A well-scoped user story (INVEST: Small) typically warrants 5–12 test cases. Beyond that, cases tend to be redundant — they pollute your ADO suite and increase maintenance cost without improving coverage.
