我如何单元测试HTTPServlet? [英] How do I Unit Test HTTPServlet?
问题描述
我想用 http://www.easymock.org/ 测试我的servlet
I want to test my servlet with http://www.easymock.org/
如何编写单元测试代码?
How do I write the Unit Testing Code?
我用你的答案更新我的代码。
I update my code with your responce.
我刚刚使用谷歌并制作了此代码。
I just used Google and made this code now.
这是我的Servlet:
Here is my 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)
推荐答案
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。
I am more familiar with Mockito, but I believe they are still similar. In fact I think Mockito was branched from EasyMock a few years back.
单元测试没有食谱方法,但这是我倾向于采取的基本方法:
There is no cookbook approach to unit testing, but this is the basic approach I tend to take:
1)创建servlet类的真实实例(即 new MyServlet())
1) Create a real instance of your servlet class (i.e. new MyServlet())
2)使用EasyMock创建模拟HttpRequest
2) Create a mock HttpRequest using EasyMock
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题的存在。
2a) Mock the desired behavior of the request to simulate a real HTTP request. For example, this may mean you simulate the presence of request parameters or headers.
3)使用EasyMock创建模拟HttpResponse
3) Create a mock HttpResponse using EasyMock
4)调用servlet的doGet()方法,将模拟请求和响应传递给它。
4) call the doGet() method of your servlet passing it both the mock request and response.
5)为了验证,检查模拟HttpResponse。验证:(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。
5) For verification, inspect the mock HttpResponse. Verify that: (a) the expected methods have been called on the object, (b) The expected data has been passed to the object.
我知道这是非常高的级别,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/验证行为。
I know this is very high-level, but I am just outlining the approach. I assume you know how to accomplish the mocking/verification behaviors using EasyMock.
希望这有用。
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