     }
     
     private func createBasicFetcherWithBobAndAlice(_ completion: @escaping (MXSession, MXRestClient, MXRoomListDataFetcher, XCTestExpectation) -> Void) {
-        testData.doMXSessionTestWithBobAndAlice(inARoom: self, andStore: MXFileStore()) { bobSession, aliceRestClient, roomId, expectation in
+        testData.doMXSessionTestWithBobAndAlice(inARoom: self, andStore: MXMemoryStore()) { bobSession, aliceRestClient, roomId, expectation in
             guard let bobSession = bobSession,
                   let aliceRestClient = aliceRestClient,
                   let expectation = expectation else {

    }

    override func setUp() {
        testData = MatrixSDKTestsData()
    }


    //  MARK: - Private
    
    private func createBasicFetcherWithBob(_ completion: @escaping (MXSession, MXRoom, MXRoomListDataFetcher, XCTestExpectation) -> Void) {
        let store = MXMemoryStore()
        testData.doMXSessionTest(withBobAndARoom: self, andStore: store) { bobSession, initialRoom, expectation in
            guard let bobSession = bobSession,
                  let initialRoom = initialRoom,
