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    <p>Generally you should abstract your business logic from Servlet container details. You can mock ServletRequest using <a href="http://static.springsource.org/spring/docs/2.0.x/api/org/springframework/mock/web/MockHttpServletRequest.html" rel="nofollow">Spring test package</a>, but it would be a bad idea to simulate Servlet container. So, you should either run system tests on a real container or move your logic from servlet into a separate bean and test it in isolation.</p> <pre><code> public class Calculator { public Integer calculate(Integer left, Integer right, String op) { Integer result = 0; 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); return result; } } public class CalculatorServlet extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Integer left = Integer.valueOf(request.getParameter("left")); Integer right = Integer.valueOf(request.getParameter("right")); String op = request.getParameter("operator"); Integer result = calculator.calculate(left, right, op); request.setAttribute("result", result); // It'll be available as ${sum}. request.getRequestDispatcher("index.jsp").forward(request, response); } } </code></pre>
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    1. POHow do I Unit Test a servlet?
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    1. USEugene Kuleshov
    1. USEugene Kuleshov
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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