src/test/groovy/ClosureListenerTest.groovy

/*
 * Copyright 2003-2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package groovy

import javax.swing.JButton

/**
 * @version $Revision$
 */
class ClosureListenerTest extends GroovySwingTestCase {

    void testAddingAndRemovingAClosureListener() {
        testInEDT {

            def b = new JButton("foo")
            b.actionPerformed = { println("Found ${it}") }

            def size = b.actionListeners.size()
            assert size == 1

            def l = b.actionListeners[0]
            def code = l.hashCode()

            println("listener: ${l} with hashCode code ${code}")

            assert l.toString() != "null"

            assert !l.equals(b)
            assert l.equals(l)

            assert l.hashCode() != 0

            b.removeActionListener(l)

            println(b.actionListeners)

            size = b.actionListeners.size()
            assert size == 0
        }
    }

    void testGettingAListenerProperty() {
        testInEDT {

            def b = new JButton("foo")
            def foo = b.actionPerformed
            assert foo == null
        }
    }

    void testNonStandardListener() {
        testInEDT {
            def myWhat = null
            def myWhere = null

            def strangeBean = new StrangeBean()
            strangeBean.somethingStrangeHappened = { what, where -> myWhat = what; myWhere = where}
            strangeBean.somethingStrangeHappened('?', '!')

            assert myWhat == '?'
            assert myWhere == '!'
        }
    }
}