Federate official Belgium data sources

frontend/src/components/map/mapWorkspaceUtils.test.ts

@@ -3,7 +3,9 @@ import {
   bboxesEqual,
   normalizeBboxFromCorners,
   parseBboxInput,
+  productCoversZones,
   resultMetricLabel,
+  selectedAreaCoverageZones,
   selectionAreaSquareMetres,
 } from './mapWorkspaceUtils'
 import type { VectorSelectionResponse } from '../../types'
@@ -47,4 +49,18 @@ describe('map workspace selection guards', () => {
     } as unknown as VectorSelectionResponse
     expect(resultMetricLabel(result)).toBe('14,24 ha')
   })
+
+  it('maps national work areas to regional provider zones without merging sources', () => {
+    expect(selectedAreaCoverageZones('Belgium land')).toEqual([
+      'belgium',
+      'flanders',
+      'wallonia',
+      'brussels',
+    ])
+    expect(selectedAreaCoverageZones('RC Ardennes inland')).toEqual(['wallonia'])
+    expect(selectedAreaCoverageZones('Brussels-Capital Region')).toEqual(['brussels'])
+    expect(selectedAreaCoverageZones('Language boundary')).toEqual(['flanders', 'wallonia'])
+    expect(productCoversZones(['wallonia'], ['flanders', 'wallonia'])).toBe(true)
+    expect(productCoversZones(['brussels'], ['wallonia'])).toBe(false)
+  })
 })