Added unit tests

gson-json-java/.gitignore

@@ -0,0 +1,3 @@
+target
+*.iml
+.idea

java-servlet-json/.gitignore

@@ -0,0 +1,3 @@
+target
+*.iml
+.idea

java-servlet-json/README.md

@@ -0,0 +1 @@
+http://hmkcode.com/java-servlet-send-receive-json-using-jquery-ajax/

java-servlet-json/modified.json

@@ -0,0 +1 @@
+[{"title":"bbc","url":"news.bbc.co.uk","categories":["news"],"tags":["uk news"]},{"title":null,"url":"www.google.co.uk","categories":["youtube","gmail","gdrive"],"tags":["search"]}]

java-servlet-json/pom.xml

@@ -35,6 +35,18 @@
  <artifactId>jackson-annotations</artifactId>
  <version>2.2.2</version>
  </dependency>
+ <dependency>
+ <groupId>junit</groupId>
+ <artifactId>junit-dep</artifactId>
+ <version>4.9</version>
+ <exclusions>
+ <exclusion>
+ <artifactId>junit</artifactId>
+ <groupId>junit</groupId>
+ </exclusion>
+ </exclusions>
+ </dependency>
+
  </dependencies>
 
  <build>

java-servlet-json/src/main/java/com/hmkcode/JSONServlet.java

@@ -1,48 +1,48 @@
 package com.hmkcode;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.hmkcode.vo.Article;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.util.LinkedList;
 import java.util.List;
-import javax.servlet.ServletException;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.hmkcode.vo.Article;
 
 public class JSONServlet extends HttpServlet{
-
+
  private static final long serialVersionUID = 1L;
 
  // This will store all received articles
  List<Article> articles = new LinkedList<Article>();
-
+
  /***************************************************
  * URL: /jsonservlet
  * doPost(): receives JSON data, parse it, map it and send back as JSON
  ****************************************************/
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
  throws ServletException, IOException{
-
+
  // 1. get received JSON data from request
  BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream()));
  String json = ""
  if(br != null){
  json = br.readLine();
  }
-
+
  // 2. initiate jackson mapper
  ObjectMapper mapper = new ObjectMapper();
-
+
  // 3. Convert received JSON to Article
  Article article = mapper.readValue(json, Article.class);
 
  // 4. Set response type to JSON
- response.setContentType("application/json");
-
+ response.setContentType("application/json");
+
  // 5. Add article to List<Article>
  articles.add(article);
 

java-servlet-json/src/main/java/com/hmkcode/vo/Article.java

@@ -5,35 +5,10 @@
 
 public class Article{
 
- private String title;
- private String url;
- private List<String> categories;
- private List<String> tags;
-
- public String getTitle(){
- return title;
- }
- public void setTitle(String title){
- this.title = title;
- }
- public String getUrl(){
- return url;
- }
- public void setUrl(String url){
- this.url = url;
- }
- public List<String> getCategories(){
- return categories;
- }
- public void setCategories(List<String> categories){
- this.categories = categories;
- }
- public List<String> getTags(){
- return tags;
- }
- public void setTags(List<String> tags){
- this.tags = tags;
- }
+ public String title;
+ public String url;
+ public List<String> categories;
+ public List<String> tags;
 
  public void addCategory(String category){
  if(this.categories == null)

java-servlet-json/src/test/java/com/hmkcode/ArticleMapperTest.java

@@ -0,0 +1,86 @@
+package com.hmkcode;/**
+ * Author: wge
+ * Date: 22/11/2013
+ * Time: 18:09
+ */
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.hmkcode.vo.Article;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+
+public class ArticleMapperTest
+{
+ private static final java.util.logging.Logger log = java.util.logging.Logger.getLogger(ArticleMapperTest.class.getName());
+
+
+ @Test
+ public void testValidJson() throws Exception
+{
+ String json = readlineFromResourceFile("/valid.json");
+
+ ObjectMapper mapper = new ObjectMapper();
+ Article article = mapper.readValue(json, Article.class);
+
+ assert(article.url.equals("news.bbc.co.uk"));
+ assert(article.categories.contains("news"));
+ assert(article.categories.size() == 1);
+ assert(article.tags.size() == 1);
+ assert(article.tags.contains("uk news"));
+
+ List<Article> articles = new ArrayList<Article>();
+ articles.add(article);
+
+ Article extra = new Article();
+ extra.url = "www.google.co.uk"
+ List categoryList = new ArrayList<String>();
+ categoryList.add("youtube");
+ categoryList.add("gmail");
+ categoryList.add("gdrive");
+
+ extra.categories = categoryList;
+ extra.addTag("search");
+
+ articles.add(extra);
+
+ //this will appear in the root of your project.
+ mapper.writeValue(new File("modified.json"), articles);
+ }
+
+ @Test (expected=com.fasterxml.jackson.core.JsonParseException.class)
+ public void testBadInput() throws Exception
+{
+ String json = readlineFromResourceFile("/malformed.json");
+ ObjectMapper mapper = new ObjectMapper();
+ Article article = mapper.readValue(json, Article.class);
+ }
+
+ @Test
+ public void missingUrl() throws Exception
+{
+ String json = readlineFromResourceFile("/missingUrl.json");
+ ObjectMapper mapper = new ObjectMapper();
+ Article article = mapper.readValue(json, Article.class);
+ assert(article.url == null);
+ assert(article.categories.contains("news"));
+ assert(article.categories.size() == 1);
+ assert(article.tags.size() == 1);
+ assert(article.tags.contains("uk news"));
+
+
+ }
+
+ String readlineFromResourceFile(String filename) throws IOException
+{
+ InputStream is = getClass().getResourceAsStream(filename);
+ byte[] buff = new byte[1000];
+ is.read(buff);
+ return new String(buff);
+ }
+}

java-servlet-json/src/test/resources/malformed.json

@@ -0,0 +1 @@
+{"title":"bbc","url":news.bbc.co.uk,"categories":["news"],"tags":["uk news"]};

java-servlet-json/src/test/resources/missingUrl.json

@@ -0,0 +1 @@
+{"title":"bbc","categories":["news"],"tags":["uk news"]};

java-servlet-json/src/test/resources/valid.json

@@ -0,0 +1 @@
+{"title":"bbc","url":"news.bbc.co.uk","categories":["news"],"tags":["uk news"]};