(I originally planned this to be a single article, but because of the scope decided to split it into two parts. Read the first part for the the basics of using Sun’s HttpServer to conduct functional HTTP testing. Here we revisit our functional test and rewrite it using JUnit 4.7’s new Interceptors feature.)


In my previous post, I demonstrated how to use Sun’s HttpServer API to write a functional test of an HTTP ‘conversation’.

Recall that I thought my initial solution seemed inelegant. It was verbose, with some start up and shutdown code that would have to be repeated for each test, and which I felt cluttered the actual test code.

It was also tedious, in the sense that the raw HttpHandler and HttpExchange API required us to do quite a few things manually, and unintuitively (such as having to compute and write out the length of our response before the response itself).

In this post, we’ll explore how to use the new Interceptors feature ‘quietly’ released with JUnit 4.7 to write reusable, portable pre and post-test behaviour. I’ll also exhibit a convenient HttpHandler implementation that simplifies some of the effort required in responding to HTTP requests.

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