我如何unit testingHTTPServlet？
我想用http://www.easymock.org/测试我的servlet
如何编写unit testing代码？
我用你的回复更新我的代码。
我刚刚使用Google并制作了此代码。
这是我的Servlet：
package com.i4ware.plugin.timesheet; import java.io.IOException; import com.atlassian.jira.issue.Issue; import com.atlassian.jira.issue.IssueManager; import com.atlassian.jira.project.Project; import com.atlassian.jira.project.ProjectManager; import org.ofbiz.core.entity.DelegatorInterface; import org.ofbiz.core.entity.EntityExpr; import org.ofbiz.core.entity.EntityOperator; import org.ofbiz.core.entity.GenericEntityException; import org.ofbiz.core.entity.GenericValue; import org.ofbiz.core.util.UtilMisc; import org.apache.commons.lang.StringEscapeUtils; import com.atlassian.crowd.embedded.api.User; import com.atlassian.jira.security.JiraAuthenticationContext; import com.atlassian.jira.web.bean.PagerFilter; import com.atlassian.jira.issue.search.SearchResults; import com.atlassian.jira.bc.issue.search.SearchService; import com.atlassian.jira.issue.search.SearchException; import com.atlassian.jira.issue.worklog.Worklog; import com.atlassian.jira.issue.worklog.WorklogManager; import com.atlassian.jira.issue.worklog.WorklogImpl; import com.atlassian.query.Query; import com.atlassian.jira.jql.builder.JqlQueryBuilder; import com.atlassian.query.order.SortOrder; import com.atlassian.jira.issue.status.Status; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.atlassian.jira.util.json.JSONObject; import com.atlassian.jira.util.json.JSONException; import com.atlassian.jira.util.json.JSONArray; import java.io.UnsupportedEncodingException; import java.sql.Timestamp; import java.util.ArrayList; import java.util.Arrays; import java.util.Calendar; import java.util.Date; import java.util.HashMap; import java.util.Hashtable; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; import java.util.TimeZone; import java.util.TreeMap; import java.util.TreeSet; import java.util.Collections; import java.lang.Long; import java.util.Collection; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.lang.Class; import java.util.Enumeration; import org.apache.log4j.Category; import com.atlassian.upm.api.license.entity.PluginLicense; import com.atlassian.upm.license.storage.lib.PluginLicenseStoragePluginUnresolvedException; import com.atlassian.upm.license.storage.lib.ThirdPartyPluginLicenseStorageManager; import com.atlassian.plugin.webresource.WebResourceManager; import com.atlassian.templaterenderer.TemplateRenderer; import java.text.ParseException; import java.text.ParsePosition; public class UserIsLogedInServlet extends HttpServlet { private static final Category log = Category.getInstance(UserIsLogedInServlet.class); /** value is made for JSON {"success":true} or {"success":false}. */ private Boolean value; private String json; private String msg; private final ThirdPartyPluginLicenseStorageManager licenseManager; private WebResourceManager webResourceManager; private final TemplateRenderer renderer; private JiraAuthenticationContext authenticationContext; public UserIsLogedInServlet(ThirdPartyPluginLicenseStorageManager licenseManager, WebResourceManager webResourceManager, TemplateRenderer renderer, JiraAuthenticationContext authenticationContext) { this.licenseManager = licenseManager; this.webResourceManager = webResourceManager; this.renderer = renderer; this.authenticationContext = authenticationContext; } @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.setContentType("application/json"); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { User targetUser = authenticationContext.getLoggedInUser(); String user = ""; if (targetUser==null) { user = "anonymous"; value = Boolean.valueOf(!"false" .equalsIgnoreCase((String) "false")); msg = "You're not loged in."; } else { user = targetUser.getName(); value = Boolean.valueOf(!"false" .equalsIgnoreCase((String) "true")); msg = "You're loged in."; } try { json = new JSONObject() .put("msg", msg) .put("success", value) .toString(); } catch (JSONException err) { err.printStackTrace(); System.out.println("Got an JSONException: " + err.getCause()); } resp.setContentType("application/json"); resp.getWriter().write(json); resp.getWriter().close(); } } 这是代码：
package com.i4ware.plugin.timesheet; import junit.framework.*; import org.junit.Ignore; import org.junit.Test; import org.junit.BeforeClass; import org.junit.After; import java.io.*; import java.security.*; import javax.servlet.http.*; import javax.servlet.ServletException; import javax.servlet.RequestDispatcher; import static org.easymock.EasyMock.*; import org.easymock.IMocksControl; import com.atlassian.upm.api.license.entity.PluginLicense; import com.atlassian.upm.license.storage.lib.PluginLicenseStoragePluginUnresolvedException; import com.atlassian.upm.license.storage.lib.ThirdPartyPluginLicenseStorageManager; import com.atlassian.plugin.webresource.WebResourceManager; import com.atlassian.templaterenderer.TemplateRenderer; import com.atlassian.jira.security.JiraAuthenticationContext; import com.i4ware.plugin.timesheet.UserIsLogedInServlet; public class UserIsLogedInServletTest extends TestCase { private ThirdPartyPluginLicenseStorageManager licenseManager; private WebResourceManager webResourceManager; private TemplateRenderer renderer; private JiraAuthenticationContext authenticationContext; private IMocksControl mocks; private UserIsLogedInServlet servlet; @BeforeClass public void setUpBeforeClass() { mocks = (IMocksControl) createStrictControl(); servlet = new UserIsLogedInServlet(licenseManager,webResourceManager,renderer,authenticationContext); } @After public void tearDown() { mocks.reset(); } @Test public void testGet()throws ServletException, IOException { HttpServletRequest request = mocks.createMock(HttpServletRequest.class); HttpServletResponse response = mocks.createMock(HttpServletResponse.class); expect(request.getRequestDispatcher("/plugins/servlet/timesheet/userislogedin")).andReturn(createMock(RequestDispatcher.class)); replay(request, response); servlet.doGet(request, response); verify(request, response); } @Test public void testPost() throws ServletException, IOException { HttpServletRequest request = mocks.createMock(HttpServletRequest.class); HttpServletResponse response = mocks.createMock(HttpServletResponse.class); expect(request.getRequestDispatcher("/plugins/servlet/timesheet/userislogedin")).andReturn(createMock(RequestDispatcher.class)); replay(request, response); servlet.doPost(request, response); verify(request, response); } }
我收到此错误：
Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 0.046 sec <<< FAILURE! testPost(com.i4ware.plugin.timesheet.UserIsLogedInServletTest) Time elapsed: 0.01 sec <<< ERROR! java.lang.NullPointerException at com.i4ware.plugin.timesheet.UserIsLogedInServletTest.testPost(UserIsLogedInServletTest.java:67) testGet(com.i4ware.plugin.timesheet.UserIsLogedInServletTest) Time elapsed: 0 sec <<< ERROR! java.lang.NullPointerException at com.i4ware.plugin.timesheet.UserIsLogedInServletTest.testGet(UserIsLogedInServletTest.java:58)
我对Mockito更熟悉，但我相信它们仍然相似。 事实上，我认为Mockito几年前从EasyMock分支出来。
unit testing没有食谱方法，但这是我倾向于采取的基本方法：
1）创建servlet类的真实实例（即新的MyServlet（） ）
2）使用EasyMock创建一个模拟HttpRequest
2a）模拟请求的所需行为以模拟真实的HTTP请求。 例如，这可能意味着您模拟了请求参数或标头的存在。
3）使用EasyMock创建一个模拟HttpResponse
4）调用servlet的doGet（）方法，将模拟请求和响应传递给它。
5）为了validation，检查模拟HttpResponse。 validation：（a）已在对象上调用了预期的方法，（b）预期的数据已传递给对象。
我知道这是非常高级的，但我只是概述了这种方法。 我假设您知道如何使用EasyMock完成模拟/validation行为。
希望这有用。
您需要模拟HttpServletRequest和HttpServletResponse对象。 与标准模拟相比， 现有的实现 更容易使用 。
获得请求和响应实例后，您将遵循以下模式：
private final MyServlet servlet = new MyServlet(); @Test public void testServlet() { //given MockHttpServletRequest req = //... MockHttpServletResponse resp = //... //when servlet.service(req, resp); //then //verify response headers and body here }
我更喜欢使用spring-test和MockHttpServletRequest以及MockHttpServletResponse。 它们比模拟更像是存根，但工作得很好。
这个答案包含有关用法的信息： 如何使用JUnit测试我的servlet