src/test/org/codehaus/groovy/reflection/GroovyClassValueFactoryTest.groovy

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 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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 *
 *    http://www.apache.org/licenses/LICENSE-2.0
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package org.codehaus.groovy.reflection

import groovy.test.GroovyTestCase

import java.util.concurrent.atomic.AtomicInteger

import org.codehaus.groovy.reflection.GroovyClassValue.ComputeValue

class GroovyClassValueFactoryTest extends GroovyTestCase {
	void testCreateGroovyClassValue(){
		final AtomicInteger counter = new AtomicInteger()
		GroovyClassValue<String> classValue = GroovyClassValueFactory.createGroovyClassValue(new ComputeValue<String>(){
			String computeValue(Class<?> type){
				counter.incrementAndGet()
				return type.name
			}
		})
		assertEquals("retrieved String class value", String.name, classValue.get(String))
		assertEquals("computeValue correctly invoked 1 time", 1, counter.get())
		assertEquals("retrieved String class value", String.name, classValue.get(String))
		assertEquals("computeValue correctly invoked 1 time", 1, counter.get())
		assertEquals("retrieved Integer class value", Integer.name, classValue.get(Integer))
		assertEquals("computeValue correctly invoked 2 times", 2, counter.get())
		classValue.remove(String)
		assertEquals("retrieved String class value", String.name, classValue.get(String))
		assertEquals("computeValue correctly invoked 3 times", 3, counter.get())
	}
}