Unit test HttpContext.Current.Session: Implement context function
In unit testing, it can be challenging to create a test environment that simulates the behavior of HttpContext.Current.Session. The null reference exception encountered in the unit test indicates that the session object is missing from the HttpContext. Solving this problem requires a way to initialize the session in the test environment.
The recommended method is to create a fake HttpContext by manipulating HttpRequest, StringWriter and HttpResponse objects. This mock HttpContext can be initialized with a new HttpSessionStateContainer, creating a functional session object.
Alternatively, you can attach the HttpSessionStateContainer directly to the HttpContext, utilizing the SessionStateUtility class. This approach simplifies the process of setting up mock sessions in unit tests.
By employing these techniques, you can establish a consistent and realistic test environment that simulates the behavior of HttpContext.Current.Session, enabling comprehensive unit testing of the web service's dependency on the session object.
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