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POUnit: How to write test case using jUnit and Mockito
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  1. POUnit: How to write test case using jUnit and Mockito
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    copied!<p>I am very new to Mockito and jUnit and TDD in general and I try to learn the right way to do TDD. I need couples of example to kick start my brain. SO please help me</p> <p>So I have a method <code>getNameInc(String dirPath, String filenName)</code>. So given a fileName like <code>bankAccount.pdf</code>, and if in this folder, no file name <code>bankAccount.pdf</code>, then return <code>bankAccountAA.pdf</code>. If there is exist one <code>bankAccount.pdf</code> then <code>return bankAccountBB.pdf</code> The <code>increment</code> is <code>AA-ZZ</code>. When it reach <code>ZZ</code> then it roll back to <code>AA</code>. I already implement the logic of this method. How do I unit test this method using Mockiti and jUnit?</p> <p><strong>EDIT</strong></p> <p>Here is the class and methods that are involved.</p> <pre><code>public class PProcessor{ private final Map&lt;Integer, String&gt; incMap = new HashMap&lt;Integer, String&gt;(); private String getNameInc(String dirPath, String filenName){ String[] nameList = new File(dirPath).list(new FilenameFilter(){ public boolean accept(File file, String name) { //only load pdf files return (name.toLowerCase().endsWith(".pdf")); } }); //Return the number of occurance that a given file name appear //inside the output folder. int freq = 0; for(int i=0; i&lt;nameList.length; i++){ if(fileName.equals(nameList[i].substring(0, 8))){ freq++; } } return incMap.get(freq); } private void generateIncHashMap(){ incMap.put(new Integer(0), "AA"); incMap.put(new Integer(1), "BB"); incMap.put(new Integer(2), "CC"); ... } } </code></pre> <p><code>generateIncHashMap()</code> will be called in the constructor to pre-generate the hash map</p>
 

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