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Two-thumb range-slider constraints: The low thumb escapes the slider domain · case 04
The low thumb escapes the slider domain.
Case contract
Thumbs clamp to domain and maintain minimum separation; translating preserves span and clamps delta against both domain edges.
Why this case matters
A deterministic model of two-thumb range-slider constraints; this isolates one interface invariant without requiring a browser.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| low minimum | [-10, 60] | [0, 60] | Failed |
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