Coverage report

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org.apache.commons.jexl.junit.Asserter
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 1   
 /*
 2   
  * Copyright 2003,2004 The Apache Software Foundation.
 3   
  *
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  * Licensed under the Apache License, Version 2.0 (the "License");
 5   
  * you may not use this file except in compliance with the License.
 6   
  * You may obtain a copy of the License at
 7   
  *
 8   
  *      http://www.apache.org/licenses/LICENSE-2.0
 9   
  *
 10   
  * Unless required by applicable law or agreed to in writing, software
 11   
  * distributed under the License is distributed on an "AS IS" BASIS,
 12   
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13   
  * See the License for the specific language governing permissions and
 14   
  * limitations under the License.
 15   
  */
 16   
 
 17   
 package org.apache.commons.jexl.junit;
 18   
 
 19   
 import java.util.HashMap;
 20   
 import java.util.Map;
 21   
 
 22   
 import junit.framework.Assert;
 23   
 
 24   
 import org.apache.commons.jexl.Expression;
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 import org.apache.commons.jexl.ExpressionFactory;
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 import org.apache.commons.jexl.JexlContext;
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 import org.apache.commons.jexl.JexlHelper;
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 29   
 /**
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  * A utility class for performing JUnit based assertions using Jexl
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  * expressions. This class can make it easier to do unit tests using
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  * Jexl navigation expressions.
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  *
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  * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
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  * @version $Revision: 1.4 $
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  */
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 public class Asserter extends Assert {
 38   
 
 39  30 
     private Map variables = new HashMap();
 40  30 
     private JexlContext context = JexlHelper.createContext();
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 42  30 
     public Asserter() {}
 43   
 
 44   
     /**
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      * This constructor will register the given variableValue as the
 46   
      * "this" variable.
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      *
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      * @param variableValue
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      */
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     public Asserter(Object variableValue) {
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         setVariable("this", variableValue);
 52  15 
     }
 53   
 
 54   
     /**
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      * Performs an assertion that the value of the given Jexl expression
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      * evaluates to the given expected value
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      *
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      * @param expression is the Jexl expression to evaluate
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      * @param expected is the expected value of the expression
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      * @throws Exception if the expression could not be evaluationed or an assertion
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      * fails
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      */
 63   
     public void assertExpression(String expression, Object expected) throws Exception {
 64  105 
         Expression exp = ExpressionFactory.createExpression(expression);
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 66  105 
         context.setVars(variables);
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         Object value = exp.evaluate(context);
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 69  105 
         assertEquals("expression: " + expression, expected, value);
 70  75 
     }
 71   
 
 72   
     /**
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      * Puts a variable of a certain name in the context so that it can be used from
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      * assertion expressions.
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      *
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      * @param name
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      * @param value
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      */
 79   
     public void setVariable(String name, Object value) {
 80  45 
         variables.put(name, value);
 81  45 
     }
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 83   
 }

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