feat(search-backend-module-pg): test error handling

Co-authored-by: Emma Indal <emma.indahl@gmail.com>
Signed-off-by: Camila Belo <camilaibs@gmail.com>

plugins/search-backend-module-pg/src/PgSearchEngine/PgSearchEngine.test.ts

@@ -271,6 +271,21 @@ describe('PgSearchEngine', () => {
         limit: 26,
       });
     });
+
+    it('should throws missing index error', async () => {
+      database.transaction.mockImplementation(fn => fn(tx));
+      database.query.mockResolvedValue([]);
+      await expect(
+        async () =>
+          await searchEngine.query({
+            term: 'testTerm',
+            types: ['unknown'],
+            filters: {},
+          }),
+      ).rejects.toThrow(
+        'Missing index for unknown. This means there are no documents to search through',
+      );
+    });
   });
 });
 

plugins/search-backend-module-pg/src/PgSearchEngine/PgSearchEngine.ts

@@ -93,7 +93,7 @@ export class PgSearchEngine implements SearchEngine {
       this.databaseStore.query(tx, pgQuery),
     );
 
-    if (!rows.length) {
+    if (pgQuery?.types && !rows.length) {
       throw new MissingIndexError(
         `Missing index for ${pgQuery.types}. This means there are no documents to search through.`,
       );