Don't set uploading unecessarily

Author: simolus3

packages/node/tests/sync.test.ts

@@ -135,6 +135,26 @@ function defineSyncTests(impl: SyncClientImplementation) {
     await vi.waitFor(() => expect(database.currentStatus.dataFlowStatus.downloading).toBeTruthy());
   });
 
+  mockSyncServiceTest('does not set uploading status without local writes', async ({ syncService }) => {
+    const database = await syncService.createDatabase();
+    database.registerListener({
+      statusChanged(status) {
+        expect(status.dataFlowStatus.uploading).toBeFalsy();
+      }
+    });
+
+    database.connect(new TestConnector(), options);
+    await vi.waitFor(() => expect(syncService.connectedListeners).toHaveLength(1));
+
+    syncService.pushLine({
+      checkpoint: {
+        last_op_id: '10',
+        buckets: [bucket('a', 10)]
+      }
+    });
+    await vi.waitFor(() => expect(database.currentStatus.dataFlowStatus.downloading).toBeTruthy());
+  });
+
   describe('reports progress', () => {
     let lastOpId = 0;