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Drilldown depth counts ordered steps including repeated field criteria · case 02

Drilldown depth counts ordered steps including repeated field criteria is violated by the widget projection.

Member previewVariant 2 · 3 implementations · 10 checks per implementation

Case contract

A facet drilldown trail records a sequence of scoped constraints; returning to a breadcrumb truncates later drilldowns while preserving independent global filters. This example checks: Drilldown depth counts ordered steps including repeated field criteria.

Why this case matters

Filter-widget state and serialization must preserve user constraints while the view changes.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
contract fixture 0	`{"active-crumb": null, "branch-after-back": ["y"], "breadcrumb-cut": [], "drilldown-depth": 1, "effective-constraints": ["scope"], "root-reset": ["scope"]}`	`{"active-crumb": null, "branch-after-back": ["y"], "breadcrumb-cut": [], "drilldown-depth": 0, "effective-constraints": ["scope"], "root-reset": ["scope"]}`	Failed

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