public void WriteDataToFileTest_Return_True() { // Arrange var listOfProcessedData = new Dictionary <string, int>(); for (int i = 0; i < 10; i++) { listOfProcessedData.Add(Guid.NewGuid().ToString(), i); } var dataStructure = new DataStructure { ListOfProcessedData = listOfProcessedData }; var fileSystemController = new FileSystemController(dataStructure); // Act var result = fileSystemController.WriteDataToFile(); // Assert Assert.IsTrue(result); }