Update local_store_indexeddb.test.ts

Author: milaGGL

packages/firestore/test/unit/local/local_store_indexeddb.test.ts

@@ -892,4 +892,49 @@ describe('LocalStore w/ IndexedDB Persistence (Non generic)', () => {
     test.assertRemoteDocumentsRead(0, 1);
     test.assertQueryReturned('coll/a');
   });
+
+  it('index auto creation does not work with multiple inequality', async () => {
+    const query_ = query(
+      'coll',
+      filter('field1', '<', 5),
+      filter('field2', '<', 5)
+    );
+
+    const targetId = await test.allocateQuery(query_);
+    test.configureIndexAutoCreation({
+      isEnabled: true,
+      indexAutoCreationMinCollectionSize: 0,
+      relativeIndexReadCostPerDocument: 2
+    });
+
+    await test.applyRemoteEvents(
+      docAddedRemoteEvent(doc('coll/a', 10, { field1: 1, field2: 2 }), [
+        targetId
+      ]),
+      docAddedRemoteEvent(doc('coll/b', 10, { field1: 8, field2: 2 }), [
+        targetId
+      ]),
+      docAddedRemoteEvent(doc('coll/c', 10, { field1: 'string', field2: 2 }), [
+        targetId
+      ]),
+      docAddedRemoteEvent(doc('coll/d', 10, { field1: 1 }), [targetId]),
+      docAddedRemoteEvent(doc('coll/e', 10, { field1: 4, field2: 4 }), [
+        targetId
+      ])
+    );
+
+    // First time query runs without indexes.
+    // Based on current heuristic, collection document counts (5) >
+    // 2 * resultSize (2).
+    // Full matched index will not be created since FieldIndex does not
+    // support multiple inequality.
+    await test.executeQuery(query_);
+    test.assertRemoteDocumentsRead(0, 2);
+    test.assertQueryReturned('coll/a', 'coll/e');
+
+    await test.backfillIndexes();
+    await test.executeQuery(query_);
+    test.assertRemoteDocumentsRead(0, 2);
+    test.assertQueryReturned('coll/a', 'coll/e');
+  });
 });