home | career | drupal | java | mac | mysql | perl | scala | uml | unix

Groovy example source code file (VarargsMethodTest.groovy)

This example Groovy source code file (VarargsMethodTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

groovytestcase, groovytestcase, integer, integer, object, object, varargsmethodtest, varargsmethodtest

The Groovy VarargsMethodTest.groovy source code

package groovy

/** 
 * VarargsMethodTest.groovy
 *
 *   1) Test to fix the Jira issues GROOVY-1023 and GROOVY-1026.
 *   2) Test the feature that the length of arguments can be variable
 *      when invoking methods with or without parameters.
 *
 * @author Dierk Koenig
 * @author Pilho Kim
 * @author Hein Meling
 * @version $Revision: 4996 $
 */

class VarargsMethodTest extends GroovyTestCase {  

    void testVarargsOnly() {  
        assertEquals 1, varargsOnlyMethod('')  
        assertEquals 1, varargsOnlyMethod(1)  
        assertEquals 2, varargsOnlyMethod('','')  
        assertEquals 1, varargsOnlyMethod( ['',''] )  
        assertEquals 2, varargsOnlyMethod( ['',''] as Object[])  
        assertEquals 2, varargsOnlyMethod( *['',''] )  

        // todo: GROOVY-1023
        assertEquals 0, varargsOnlyMethod()

        // todo: GROOVY-1026
        assertEquals(-1, varargsOnlyMethod(null))
        assertEquals(2, varargsOnlyMethod(null, null))
     }  

     Integer varargsOnlyMethod(Object[] args) {  
         println("args = " + args)
         // (1) todo: GROOVY-1023 (Java 5 feature)
         //     If this method having varargs is invoked with no parameter,
         //     then args is not null, but an array of length 0.
         // (2) todo: GROOVY-1026 (Java 5 feature)
         //     If this method having varargs is invoked with one parameter
         //     null, then args is null, and so -1 is returned here.
         if (args == null)
               return -1
         return args.size()  
     }  
  
     void testVarargsLast() {  
         assertEquals 0, varargsLastMethod('')  
         assertEquals 0, varargsLastMethod(1)  
         assertEquals 1, varargsLastMethod('','')  
         assertEquals 2, varargsLastMethod('','','')  
         assertEquals 1, varargsLastMethod('', ['',''] )  
         assertEquals 2, varargsLastMethod('', ['',''] as Object[])  
         assertEquals 2, varargsLastMethod('', *['',''] )  

         // todo: GROOVY-1026
         assertEquals(-1, varargsLastMethod('',null))
         assertEquals(2, varargsLastMethod('',null, null))
     }  
  
     Integer varargsLastMethod(Object first, Object[] args) {  
         // (1) todo: GROOVY-1026 (Java 5 feature)
         //     If this method having varargs is invoked with two parameters
         //     1 and null, then args is null, and so -1 is returned here.
         if (args == null)
               return -1
         return args.size()  
     }  
}  

Other Groovy examples (source code examples)

Here is a short list of links related to this Groovy VarargsMethodTest.groovy source code file:

new blog posts

 

Copyright 1998-2013 Alvin Alexander, alvinalexander.com
All Rights Reserved.