     
     override func tearDown() {
         super.tearDown()
+        OHHTTPStubs.removeAllStubs()
     }
     
     func testLoadUserProfileSuccessfully() {

    }
    
    func testLoadUserProfileFailed() {
        stub(isHost(TwitterEndpoints().timeline.host)) { _ in
            let stubData = "Hello World!".dataUsingEncoding(NSUTF8StringEncoding)
            return OHHTTPStubsResponse(data: stubData!, statusCode:200, headers:nil)
        }
    }
}

        
        _ = timelineViewModel.requestProfileInformation()
            .subscribe(onNext: { user in
                XCTAssertNil(user)
                XCTAssertEqual(user.userID, self.userData.userID)
                XCTAssertEqual(user.name, self.userData.name)
                XCTAssertEqual(user.screenName, self.userData.screenName)
