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POHow do I Unit Test a servlet?
 

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  1. POHow do I Unit Test a servlet?
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    <p>I have a servlet called <code>Calculator</code>. It reads the parameters <code>left</code>, <code>right</code> and <code>op</code> and returns by setting an attribute <code>result</code> in the response.</p> <p>What is the easiest way to unit test this: basically I want to create an HttpServletRequest, set the parameters, and then checking the response - but how do I do that?</p> <p>Here's the servlet code (it's small and silly on purpose):</p> <pre><code>public class Calculator extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet { public Calculator() { super(); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Integer left = Integer.valueOf(request.getParameter("left")); Integer right = Integer.valueOf(request.getParameter("right")); Integer result = 0; String op = request.getParameter("operator"); if ("add".equals(op)) result = this.opAdd(left, right); if ("subtract".equals(op)) result = this.opSub(left, right); if ("multiply".equals(op)) result = this.opMul(left, right); if ("power".equals(op)) result = this.opPow(left, right); if ("divide".equals(op)) result = this.opDiv(left, right); if ("modulo".equals(op)) result = this.opMod(left, right); request.setAttribute("result", result); // It'll be available as ${sum}. request.getRequestDispatcher("index.jsp").forward(request, response); } } ... </code></pre> <p>}</p>
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    1. COCan you show some of the code for the servlet?
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      1. POHow do I Unit Test a servlet?
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    2. COpossible duplicate of [Unit-testing servlets](http://stackoverflow.com/questions/53532/unit-testing-servlets)
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      1. POHow do I Unit Test a servlet?
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