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how to do servlet unit testing

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hi guys i need help from you, i created chillist servlet for reading properties from /content it returns a JSONArray of the node's child node paths and properties.

so plz help for unit testing. i need unit testing script for this code, this my code

package com.aem.community.core.servlets;

import java.io.IOException;

import javax.jcr.Node;

import javax.jcr.NodeIterator;

import javax.jcr.RepositoryException;

import javax.servlet.ServletException;

import org.apache.felix.scr.annotations.Service;

import org.apache.felix.scr.annotations.sling.SlingServlet;

import org.apache.sling.api.SlingHttpServletRequest;

import org.apache.sling.api.SlingHttpServletResponse;

import org.apache.sling.api.resource.Resource;

import org.apache.sling.api.resource.ResourceResolver;

import org.apache.sling.api.servlets.SlingAllMethodsServlet;

import org.apache.sling.commons.json.JSONArray;

import org.apache.sling.commons.json.JSONException;

import org.apache.sling.commons.json.JSONObject;

import org.apache.sling.commons.json.jcr.JsonJcrNode;

import org.osgi.service.component.annotations.Component;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

@Component(enabled = true, immediate = true)

@Service(ChildList.class)

@SlingServlet(resourceTypes="sling/servlet/default",selectors="childlist",methods="GET",extensions="json",metatype=true)

public class ChildList extends SlingAllMethodsServlet {

protected final Logger loger = LoggerFactory.getLogger(ChildList.class);

private static final long serialVersionUID = 9176255033916949528L;

private JSONArray array;

@Override

public void doGet(final SlingHttpServletRequest request, final SlingHttpServletResponse response)

throws ServletException, IOException {

try{

ResourceResolver resolver = request.getResourceResolver();

Resource resource = resolver.getResource(request.getRequestPathInfo().getResourcePath());

Node node = null;

if (resource != null) {

node = resource.adaptTo(Node.class);

}

if (node == null){

throw new RepositoryException();

}

NodeIterator it = node.getNodes();

array = new JSONArray();

while (it.hasNext()) {

Node child = it.nextNode();

if (loger.isDebugEnabled()){

loger.debug("resource......."+child.getPath());

}

JSONObject obj = new JsonJcrNode(child);

array.put(obj);

response.setContentType("application/json");

response.getOutputStream().print(array.toString());

}

catch(RepositoryException e) {

throw new ServletException("404 HTTP ERROR Page Not Found", e);

}

catch(JSONException e)

{

loger.error("Could not formulate JSON response");

throw new ServletException("Error", e);

}

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joerghohAccepted solution

Employee

Today I rewrote unittests for the whole day ... so while I just was on it, I wrote them for this question, too.

You can find the complete code at https://github.com/joerghoh/cqdump/tree/master/unittests

Clone it and then run it (the usual "mvn clean install").

The relevant bits and pieces:

Your servlet code (needed to change few things): cqdump/ChildListAsPosted.java at master · joerghoh/cqdump · GitHub
The unit test for it: cqdump/ChildListTest.java at master · joerghoh/cqdump · GitHub
The test content for the unit test: cqdump/ChildListTest.json at master · joerghoh/cqdump · GitHub
And then on top of it an optimized version of your original code, which does not use the JCR API and is in general much cleaner (although not 100% functional equivalent, you'll see it in the test output): cqdump/ChildListOptimized.java at master · joerghoh/cqdump · GitHub

I used the AEM Mocks from wcm.io, which work pretty good for usecases like yours.

HTH,

Jörg

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smacdonald2008

Level 10

You will have to modify the dependencies to work with AEM 6.2. Try rebuilding this code with AEM Maven 10 archetype and UBER 6.2 JAR file.

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naveent23995593Author

Level 3

am using 6.2 version

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smacdonald2008

Level 10

Did you fork this repo and download it -- cqdump/unittests at master · joerghoh/cqdump · GitHub

It builds as i showed the build results. I also deployed it successfully.

WHat version of AEM are you using?

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naveent23995593Author

Level 3

org.apache.sling.api.servlets,version=[2.2,3) -- Cannot be resolved

org.apache.sling.api.resource,version=[2.10,3) -- Cannot be resolved

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smacdonald2008

Level 10

Did you take Joergs example and execute it - I built his example and it works

Let us know if you executed this and inspected in detail the Java app logic here.

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naveent23995593Author

Level 3

that's why am asking you guys execute our code in ur local write unit test for it...plz guys dnt mind..,

am requesting...

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naveent23995593Author

Level 3

in that while am executing junit test class am getting so many errors occured..

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smacdonald2008

Level 10

Joerg has pointed you to a lot of code that uses MOCK APIs.

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naveent23995593Author

Level 3

this is my test class ...i written 2 test cases with help of Httpclientreq class

public class ChildListTest

{

private static String path;

public String getPath() {

return path;

}

@SuppressWarnings({ "static-access" })

@Test

public void urlTest() throws HttpException, IOException

{

path="/apps.childlist.json";

HttpClientReq main=new HttpClientReq();

main.authenticateMethod();

assertEquals(200,main.getStatus());

}

@SuppressWarnings("static-access")

@Test

public void urlTest2() throws HttpException, IOException

{

path="/content.childlist.json";

HttpClientReq main=new HttpClientReq();

main.authenticateMethod();

assertEquals(200,main.getStatus());

}

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naveent23995593Author

Level 3

that is i know where am write test class..,in test class i written using httpclient get status code , with that status code i done test case,,but i want using mock objects check those test cases

public class HttpClientReq

{

private static final String PROTOCOL = "http";

private static final int PORT = 4502;

private static final String HOST = "localhost";

private static final String COOKIE_NAME = "login-token";

private static GetMethod get;

private static String username = "admin";

private static String password = "admin";

private static int status;

public static GetMethod getGet() {

return get;

}

public static int getStatus() {

return status;

}

public static void setStatus(int status) {

HttpClientReq.status = status;

}

public static void setGet(GetMethod get) {

HttpClientReq.get = get;

}

public static void authenticateMethod() throws HttpException, IOException

{

ChildListTest list=new ChildListTest();

HttpClient client = new HttpClient();

String token = getStatus(username, password, client);

if (token == null) {

System.err.println("No login cookie set.");

return;

}

// System.out.println("token = " + token);

get = new GetMethod(String.format("%s://%s:%s%s", PROTOCOL, HOST, PORT,list.getPath()));

get.addRequestHeader("Cookie", String.format("%s=%s", COOKIE_NAME, token));

int status = client.executeMethod(get);

if (status == 200) {

//System.out.println("response="+get.getResponseBodyAsString());

} else {

System.err

.println("Unexcepted response code " + status + "; msg: " + get.getResponseBodyAsString());

}

private static String getStatus(String username, String password, HttpClient client) throws IOException,

HttpException {

String token = null;

PostMethod authRequest = new PostMethod(String.format("%s://%s:%s/j_security_check", PROTOCOL, HOST, PORT));

authRequest.setParameter("j_username", username);

authRequest.setParameter("j_password", password);

authRequest.setParameter("j_validate", "true");

status = client.executeMethod(authRequest);

if (status == 200) {

Header[] headers = authRequest.getResponseHeaders("Set-Cookie");

for (Header header : headers) {

String value = header.getValue();

// System.out.println("valueee="+value);

if (value.startsWith(COOKIE_NAME + "=")) {

int endIdx = value.indexOf(';');

if (endIdx > 0) {

token = value.substring(COOKIE_NAME.length() + 1, endIdx);

}

else {

System.err

.println("Unexcepted response code " + status + "; msg: " + authRequest.getResponseBodyAsString());

}

return token;

}

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