java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.isAsyncStarted() while using Mockito with Junit

Question

I am trying to get my feet wet with TDD. I am trying to write unit test cases for controllers using Mockito in conjunction with MockMvc and Junit.

But I am getting a

Answer 1

This happens when your development and production environments are using different servlet API versions.

While building with tomcat7(for example) it supports servlet 3 and hence you will not receive any error.

While doing the same on a lower version tomcat, it will throw error.

Solution:

Either upgrade one of the environments to support servlet 3 or just downgrade your code to use servlet 2.5