     // - Bob uses the MXBackgroundSyncService again
     // -> MXBackgroundSyncService should have detected that the MXSession ran in parallel.
     //    It must have reset its cache. syncResponseStore.prevBatch must not be the same
-    // -> MXSyncResponseFileStore must be in sync with MXSession store
     func testWithMXSessionRunningInParallel() {
         
         // - Alice and Bob are in an encrypted room

                                    syncResponseStore.open(withCredentials: bobCredentials)
                                    
                                    XCTAssertNotEqual(syncResponseStorePrevBatch, syncResponseStore.prevBatch)
                                    
                                    // -> MXSyncResponseFileStore must be in sync with MXSession store
                                    XCTAssertNotEqual(bobSessionStartEventStreamToken2, syncResponseStore.prevBatch)

                                    expectation?.fulfill()
                                }

                            syncResponseStore.open(withCredentials: bobCredentials)
                            let syncResponseStorePrevBatch = syncResponseStore.prevBatch
                            
                            // - Alice sends a message. This make bob MXSession update its sync token
                            room.sendTextMessage(Constants.messageText, localEcho: &localEcho) { _ in }
                            
