fix(plugin-lighthouse): generate categories for single URL

Author: hanna-skryl

packages/plugin-lighthouse/src/lib/merge-categories.ts

@@ -49,9 +49,6 @@ function createCategories(
   groups: Group[],
   context: PluginUrlContext,
 ): CategoryConfig[] {
-  if (!shouldExpandForUrls(context.urlCount)) {
-    return [];
-  }
   return extractGroupSlugs(groups).map(slug =>
     createAggregatedCategory(slug, context),
   );

packages/plugin-lighthouse/src/lib/merge-categories.unit.test.ts

@@ -98,8 +98,17 @@ describe('mergeLighthouseCategories', () => {
       },
     };
 
-    it('should return empty array when no categories provided', () => {
-      expect(mergeLighthouseCategories(plugin)).toEqual([]);
+    it('should create categories from groups when no categories provided', () => {
+      expect(mergeLighthouseCategories(plugin)).toEqual([
+        expect.objectContaining({
+          slug: 'performance',
+          refs: [expect.objectContaining({ slug: 'performance', weight: 1 })],
+        }),
+        expect.objectContaining({
+          slug: 'accessibility',
+          refs: [expect.objectContaining({ slug: 'accessibility', weight: 1 })],
+        }),
+      ]);
     });
 
     it('should return provided categories unchanged', () => {