Databases
StackOverflow2013
Postsdbo
POWriting test case for Junit testing
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POWriting test case for Junit testing
    primarykey
    data
    text
    <p>As a developer, I'm a newbie to Unit testing and have a requirement to write a test case to unit test the following code. Could somebody help me here and also give me some pointers on how to write unit tests in eclipse. </p> <pre><code>private void handle(final DocumentEvent e) { Document doc = e.getDocument(); try { String text = e.getDocument().getText(0, doc.getLength()); if (text.length() &gt;= maxMessageSize) { try { component.getHighlighter() .addHighlight(maxMessageSize, text.length() + 1, painter); } catch (BadLocationException ex) { System.out.println(ex.getMessage()); } } else { component.getHighlighter().removeAllHighlights(); } } catch (BadLocationException e1) { System.out.println(e1.getMessage()); } } </code></pre> <p>Thanks</p> <hr> <h3>Update</h3> <p>For some reason when I running the test case, I'm not getting any coverage at all. Am I doing something wrong here?? Further researching suggests that I need to use test.perform() method to call the method I want to test.. Is that correct?? Can you please suggest something?? Here is the code: </p> <pre><code>public class TestMaxLength { static final int maxMessageSize = 125; JTextPane textPane = new JTextPane(); //***EasyMock varibles**** private JTextComponent mockComponent; private MaxLength classUnderTest; private DocumentEvent mockEvent; private Document mockDocument; private Highlighter mockHighlighter; @Before public void setUp() { mockComponent = EasyMock.createMock(JTextComponent.class); mockEvent = EasyMock.createMock(DocumentEvent.class); mockDocument = EasyMock.createMock(Document.class); EasyMock.expect(mockEvent.getDocument()).andStubReturn(mockDocument); EasyMock.expect(mockDocument.getLength()).andReturn(256); mockHighlighter = EasyMock.createMock(Highlighter.class); EasyMock.expect(mockComponent.getHighlighter()).andReturn(mockHighlighter); } @Test public void testSetLength() { MaxLength maxListener = new MaxLength(125); maxListener.decorate(textPane); } @Test public void testEmptyText() { EasyMock.expect(mockDocument.getText(0, 1)).andStubReturn(""); mockHighlighter.removeAllHighlights(); EasyMock.replay(mockComponent, mockEvent, mockDocument, mockHighlighter); classUnderTest.handle(mockEvent); EasyMock.verify(mockComponent, mockEvent, mockDocument, mockHighlighter); } } </code></pre> <hr> <p>The <code>decorate(JtextComponent jComponent)</code> method is present in the class to be tested (<code>MaxLength</code>) and is defined as :</p> <pre><code>public final void decorate(final JTextComponent c) { //TODO throw exception if already decorating this.component = c; component.getDocument().addDocumentListener(this); } </code></pre> # <p>UPDATE: </p> <p>@Peter: Managed to find out that it is not the Component class that is the problem but instead I needed asm (<a href="http://forge.ow2.org/projects/asm" rel="nofollow noreferrer">http://forge.ow2.org/projects/asm</a>). I've also change the code to combine the 2 methods into 1 method: </p> <pre><code>public void testEmptyText() { maxSizeListener.decorate(mockComponent); //mockHighlighter.removeAllHighlights(); EasyMock.replay(mockComponent, mockEvent, mockDocument, mockHighlighter); maxSizeListener.handle(mockEvent); EasyMock.verify(mockComponent, mockEvent, mockDocument, mockHighlighter); } </code></pre> <p><strong><em>But now I'm having a different error on verify:</em></strong> </p> <pre><code>java.lang.AssertionError: Expectation failure on verify: getHighlighter(): expected: 1, actual: 0 at org.easymock.internal.MocksControl.verify(MocksControl.java:184) at org.easymock.EasyMock.verify(EasyMock.java:2038) at net.TestMaxLength.testEmptyText(TestMaxLength.java:98) </code></pre> <p>This is caused when executing EasyMock.verify() statement on mockComponent.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USGlobal Dictator
    1. USGlobal Dictator
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POWriting test case for Junit testing
      1. USCoolBeans
      1. VTFavorite
    2. VO
      singulars
      1. POWriting test case for Junit testing
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POWriting test case for Junit testing
      1. USprayagupd
      1. VTFavorite
    1. COCould you format the code so it's readable (and remove the line numbers)?
      singulars
      1. POWriting test case for Junit testing
      1. USSam Dolan
    2. COIt must be a trick question, because you shouldn't unit test private methods.
      singulars
      1. POWriting test case for Junit testing
      1. USMark Rushakoff
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload