             self.waitForExpectations(timeout: self.timeoutDuration, handler: nil)
         }
         
+        Thread.sleep(forTimeInterval: testInterval)
+        
         print("Check whether the specified Comment is gave upvote.")
         do {
             var isSucceeded = false

            self.waitForExpectations(timeout: self.timeoutDuration, handler: nil)
        }
        
        print("Test to give a downvote to the specified Link.")
        do {
            var isSucceeded = false

            } catch { XCTFail((error as NSError).description) }
            self.waitForExpectations(timeout: self.timeoutDuration, handler: nil)
        }
        
        Thread.sleep(forTimeInterval: testInterval)

        print("Check whether the specified Link is gave downvote.")
        do {
