spring - Unit testing a method dependent to the request context

Question

I'm writing a unit test for a method that contains the following line:

String sessionId = RequestContextHolder.currentRequestAttributes().getSessionId();

I get the following error:

java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

The reason is quite obvious — I'm not running the test in a request context.

The question is, how can I test a method that contains a call to a method dependent to the request context in a test environnment?

Thank you very much.

Answer 1

Spring-test has a flexible request mock called MockHttpServletRequest.

MockHttpServletRequest request = new MockHttpServletRequest();
RequestContextHolder.setRequestAttributes(new ServletRequestAttributes(request));