classifies "wheel events" web feature #56175
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Feature: Wheel events Reference: https://github.com/web-platform-dx/web-features/blob/main/features/wheel-events.yml Note: The wheel event fires when the user moves a mouse wheel or similar spatially rotating input device. Includes the WheelEvent API with properties like deltaX, deltaY, deltaZ, and deltaMode. Search strategy: Searched for "WheelEvent" API references, "wheel event" occurrences, and "deltaMode" property usage. Results: - Total matches found: 144 across 51 unique files - Filtered: 39 files WEB_FEATURES.yml files created/updated: ✅ [dom/events/WEB_FEATURES.yml](dom/events/WEB_FEATURES.yml) - Event constructors test (1 file) - **CREATED** ✅ [dom/events/non-cancelable-when-passive/WEB_FEATURES.yml](dom/events/non-cancelable-when-passive/WEB_FEATURES.yml) - Passive/non-passive wheel event listener tests (21 files) - **CREATED** ✅ [dom/events/scrolling/WEB_FEATURES.yml](dom/events/scrolling/WEB_FEATURES.yml) - Wheel event transaction tests (7 files) - **UPDATED** ✅ [uievents/WEB_FEATURES.yml](uievents/WEB_FEATURES.yml) - Historical and IDL harness tests (2 files) - **CREATED** ✅ [uievents/legacy-domevents-tests/submissions/Microsoft/WEB_FEATURES.yml](uievents/legacy-domevents-tests/submissions/Microsoft/WEB_FEATURES.yml) - Legacy WheelEvent tests (6 files) - **CREATED** ✅ [uievents/order-of-events/mouse-events/WEB_FEATURES.yml](uievents/order-of-events/mouse-events/WEB_FEATURES.yml) - Wheel event ordering tests (2 files) - **CREATED** Excluded (12 files): - CSS scroll tests (3 files): css/css-overscroll-behavior, css/css-scroll-snap - Primary focus on CSS scrolling features - Cross-origin iframe test (1 file): Primary focus on cross-origin iframe scrolling behavior - Generic event tests (3 files): Event-timestamp-high-resolution, Document-createEvent, hasFeature - Test many event types, not wheel events specifically - Pointer events test (1 file): Primary focus on pointer events, not wheel events - SVG event attributes test (1 file): Primary focus on event attributes in general - Workers tests (2 files): Test interface object availability in workers (general infrastructure)
See comments in: web-platform-tests@63dfdae
foolip
approved these changes
Nov 21, 2025
uievents/WEB_FEATURES.yml
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| features: | ||
| - name: wheel-events | ||
| files: | ||
| - historical.html |
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This test indeed only includes tests for WheelEvent, but labeling it is risky because other things can be added to historical.html later, it's often a collection of random things that shouldn't be supported.
| features: | ||
| - name: wheel-events | ||
| files: | ||
| - WheelEvent.* |
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These aren't actually treated as tests. In MANIFEST.json they are under manifest.items.support, like README files and lots of other non-test stuff. I've filed #56182 about this.
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Extracted from #55663 for easier review