testadminservlet.java

软件测试经典书籍<<Junit in action>>里的源代码。

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package junitbook.servlets;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import javax.servlet.ServletException;

import org.apache.cactus.ServletTestCase;
import org.apache.cactus.WebRequest;
import org.apache.commons.beanutils.BasicDynaClass;
import org.apache.commons.beanutils.DynaBean;
import org.apache.commons.beanutils.DynaProperty;

public class TestAdminServlet extends ServletTestCase
{
    public void beginGetCommandOk(WebRequest request)
    {
        request.addParameter("command", "SELECT...");
    }
    
    public void testGetCommandOk() throws Exception
    {
        AdminServlet servlet = new AdminServlet();
        String command = servlet.getCommand(request);
        
        assertEquals("SELECT...", command);
    }
    
    public void testGetCommandNotDefined()
    {
        AdminServlet servlet = new AdminServlet();

        try 
        {
            servlet.getCommand(request);
            fail("Command should not have existed");
        }
        catch (ServletException expected)
        {
            assertTrue(true);
        }        
    }

    private Collection createCommandResult() throws Exception
    {
        List results = new ArrayList();
        
        DynaProperty[] props = new DynaProperty[] {
            new DynaProperty("id", String.class),
            new DynaProperty("responsetime", Long.class)
        };
        BasicDynaClass dynaClass = new BasicDynaClass("requesttime", 
            null, props);

        DynaBean request1 = dynaClass.newInstance();
        request1.set("id", "12345");
        request1.set("responsetime", new Long(500));
        results.add(request1);

        DynaBean request2 = dynaClass.newInstance();
        request1.set("id", "56789");
        request1.set("responsetime", new Long(430));
        results.add(request2);
        
        return results;
    }
         
    public void testCallView() throws Exception
    {
        AdminServlet servlet = new AdminServlet();       

        // Set the result of the exection of the command in the
        // HTTP request so that the JSP page can get the data to
        // display         
        request.setAttribute("result", createCommandResult());

        servlet.callView(request);
    }

    public void beginDoGet(WebRequest request)
    {
        request.addParameter("command", "SELECT...");
    }

    public void testDoGet() throws Exception
    {
        AdminServlet servlet = new AdminServlet()
        {
            public Collection executeCommand(String command) 
                throws Exception
            {
                return createCommandResult();
            }
        };
              
        servlet.doGet(request, response);

        // Verify that the result of executing the command has been
        // stored in the HTTP request as an attribute that will be
        // passed to the JSP page.
        Collection results = 
            (Collection) request.getAttribute("result");        
        assertNotNull("Failed to get execution results from the "
            + "request", results);               
        assertEquals(2, results.size());
    }

}