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Jexl is an implementation of the JSTL Expression Language with extensions.

There is a newer version: 1.1-hudson-20090508


 
  Package Documentation for org.apache.commons.jexl.junit Package
 
 
  Using JEXL expressions in JUnit assertions.
  


  
   

    Introduction
   
  
  Introduction
  
   This package only contains one class, Asserter, which
   allows you to use a JEXL expression in a JUnit assertion.
   The following example demonstrates the use of the Asserter
   class.  An instance is created, and the internal JexlContext
   is populated via calls to setVariable().  Calls to 
   assertExpression() succeed if the expression evaluates to
   the value of the second parameter, otherwise an 
   AssertionFailedException is thrown.
  
  
     Asserter asserter = new Asserter();
   asserter.setVariable("foo", new Foo());
   asserter.setVariable("person", "James");

   asserter.assertExpression("person", "James");
   asserter.assertExpression("size(person)", new Integer(5));
        
   asserter.assertExpression("foo.getCount()", new Integer(5));
   asserter.assertExpression("foo.count", new Integer(5));