add code test

Author: huult

lib/OnyxUtils.ts

@@ -1418,6 +1418,7 @@ function updateSnapshots(data: OnyxUpdate[], mergeFn: typeof Onyx.merge): Array<
 
             const oldValue = updatedData[key] || {};
             const newValue = lodashPick(value, Object.keys(snapshotData[key]));
+
             updatedData = {...updatedData, [key]: Object.assign(oldValue, newValue)};
         });
 

tests/unit/onyxTest.ts

@@ -2029,5 +2029,25 @@ describe('Onyx', () => {
                 [`${ONYX_KEYS.COLLECTION.TEST_KEY}entry2`]: {id: 'entry2_id', name: 'entry2_name'},
             });
         });
+        it('should clear pending merge for a key during multiSet()', async () => {
+            const testKey = `${ONYX_KEYS.COLLECTION.TEST_KEY}entry1`;
+
+            // Mock the merge queue with the correct type
+            const mockMergeQueue: Record<string, unknown[]> = {
+                [testKey]: [{some: 'mergeData'}],
+            };
+
+            // Mock the utility functions
+            jest.spyOn(OnyxUtils, 'hasPendingMergeForKey').mockImplementation((key) => key === testKey);
+            jest.spyOn(OnyxUtils, 'getMergeQueue').mockImplementation(() => mockMergeQueue);
+
+            await Onyx.multiSet({
+                [testKey]: {id: 'entry1_id', name: 'entry1_name'},
+            });
+
+            expect(mockMergeQueue[testKey]).toBeUndefined();
+
+            jest.restoreAllMocks();
+        });
     });
 });