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Groovy example source code file (ListenerListASTTest.groovy)

This example Groovy source code file (ListenerListASTTest.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

groovyshell, groovyshell, list, listenerlist, listenerlist, object, string, string, testclass, testclass, testevent, testlistener, testmessage, testsource

The Groovy ListenerListASTTest.groovy source code

/*
 * Copyright 2003-2011 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.beans

/**
 * Unit test for ListenerList.
 *
 * @author Alexander Klein
 * @author Hamlet D'Arcy
 */

class ListenerListASTTest extends GroovyTestCase {

    public void testDefaultFireAndName() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
            import groovy.beans.*

            class TestClass {
                @ListenerList
                List<TestListener> listeners
            }

            new TestClass()
        """)
        assert tc.listeners == []
        int count = 0
        String source = "TestSource"
        String message = "TestMessage"
        def evt
        assert tc.testListeners.size() == 0
        tc.addTestListener([eventOccurred: { e -> count++; evt = e }] as TestListener)
        assert tc.testListeners.size() == 1
        tc.fireEventOccurred(new TestEvent(source, message))
        tc.removeTestListener(tc.testListeners[0])
        assert tc.testListeners.size() == 0
        assert count == 1
        assert evt.source.is(source)
        assert evt.message.is(message)
    }

    public void testCustomFireAndName() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
            package b
            import groovy.beans.*

            class TestClass {
                @ListenerList(name = "someOtherTestListener")
                List<TestListener> listeners
            }

            new TestClass ()
        """)
        assert tc.listeners == []
        int count = 0
        String source = "TestSource"
        String message = "TestMessage"
        def evt
        assert !tc.class.methods.name.contains('addTestListener')
        assert !tc.class.methods.name.contains('removeTestListener')
        assert !tc.class.methods.name.contains('getTestListeners')
        assert tc.class.methods.name.contains('fireEventOccurred')
        assert tc.someOtherTestListeners.size() == 0
        tc.addSomeOtherTestListener([eventOccurred: { e -> count++; evt = e }] as TestListener)
        assert tc.someOtherTestListeners.size() == 1
        tc.fireEventOccurred(new TestEvent(source, message))
        tc.removeSomeOtherTestListener(tc.someOtherTestListeners[0])
        assert tc.someOtherTestListeners.size() == 0
        assert count == 1
        assert evt.source.is(source)
        assert evt.message.is(message)
    }

    public void testMultipleMethodListener() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
            package b
            import groovy.beans.*

            class TestClass {
                @ListenerList
                List<TestTwoMethodListener> listeners
            }

            new TestClass ()
        """)
        assert tc.listeners == []
        int count1 = 0
        int count2 = 0
        String source1 = 'TestSource'
        String source2 = 'TestSource'
        String message1 = 'TestMessage'
        String message2 = 'TestMessage'
        def evt1
        def evt2
        tc.addTestTwoMethodListener([eventOccurred1: { e -> count1++; evt1 = e }, eventOccurred2: { e -> count2++; evt2 = e }] as TestTwoMethodListener)
        tc.fireEventOccurred1(new TestEvent(source1, message1))
        assert count1 == 1
        assert count2 == 0
        assert evt1.source.is(source1)
        assert evt1.message.is(message1)
        tc.fireEventOccurred2(new TestEvent(source2, message2))
        assert count1 == 1
        assert count2 == 1
        assert evt2.source.is(source2)
        assert evt2.message.is(message2)
    }

    public void testMultipleListenersConflictsDetected() {
        def message = shouldFail {
            new GroovyShell().evaluate("""
                package b
                import groovy.beans.*

                class TestClass {
                    @ListenerList
                    Set<TestListener> listeners
                    @ListenerList(name = "someOtherTestListener")
                    Vector<TestListener> listeners2
                }
            """)
        }

        assert message.contains('Class b.TestClass already has method fireEventOccurred')
    }

    void testMultipleMethodListeners() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
            package b
            import groovy.beans.*

            class TestClass {
                @ListenerList
                List<TestTwoMethodListener> listeners
            }

            new TestClass ()
        """)
        assert tc.listeners == []
        int count1 = 0
        int count2 = 0
        String source1 = 'TestSource'
        String source2 = 'TestSource'
        String message1 = 'TestMessage'
        String message2 = 'TestMessage'
        def evt1
        def evt2
        tc.addTestTwoMethodListener([eventOccurred1: { e -> count1++; evt1 = e }, eventOccurred2: { e -> count2++; evt2 = e }] as TestTwoMethodListener)
        tc.fireEventOccurred1(new TestEvent(source1, message1))
        assert count1 == 1
        assert count2 == 0
        assert evt1.source.is(source1)
        assert evt1.message.is(message1)
        tc.fireEventOccurred2(new TestEvent(source2, message2))
        assert count1 == 1
        assert count2 == 1
        assert evt2.source.is(source2)
        assert evt2.message.is(message2)
    }

    void testMapEvent() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
              package b
              import groovy.beans.*

              class TestClass {
                  @ListenerList
                  List<TestMapListener> listeners
              }

              new TestClass ()    """)
        assert tc.listeners == []
        int count = 0
        String source = 'TestSource'
        String message = 'TestMessage'
        def evt
        tc.addTestMapListener([eventOccurred: { e -> count++; evt = e }] as TestMapListener)
        tc.fireEventOccurred([source: source, message: message])
        assert count == 1
        assert evt.source.is(source)
        assert evt.message.is(message)
    }

    void testError_AnnotationNotOnCollection() {
        def message = shouldFail {
            new GroovyShell().evaluate("""
                import groovy.beans.*

                class TestClass {
                    @ListenerList
                    def listeners
                }
            """)
        }
        assert message.contains('@groovy.beans.ListenerList can only annotate collection properties')
    }

    void testError_AnnotationWithoutGeneric() {
        def message = shouldFail {
            new GroovyShell().evaluate("""
                import groovy.beans.*

                class TestClass {
                    @ListenerList
                    List listeners
                }
            """)
        }
        assert message.contains('@groovy.beans.ListenerList fields must have a generic type')
    }

    void testError_AnnotationWithWildcard() {
        def message = shouldFail {
            new GroovyShell().evaluate("""
                import groovy.beans.*

                class TestClass {
                    @ListenerList
                    List<? super Object> listeners
                }
            """)
        }
        assert message.contains('@groovy.beans.ListenerList fields with generic wildcards not yet supported')
    }

    void testListEvent() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
            package b
            import groovy.beans.*

            class TestClass {
                @ListenerList
                List<TestListListener> listeners
            }

            new TestClass ()
        """)
        assert tc.listeners == []
        int count = 0
        String source = 'TestSource'
        String message = 'TestMessage'
        def evt
        tc.addTestListListener([eventOccurred: { e -> count++; evt = e }] as TestListListener)
        tc.fireEventOccurred([source, message])
        assert count == 1
        assert evt[0].is(source)
        assert evt[1].is(message)
    }

    void testObjectEvent() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
            package b
            import groovy.beans.*

            class TestClass {
                @ListenerList
                List<TestObjectListener> listeners
            }

            new TestClass ()
        """)
        assert tc.listeners == []
        int count = 0
        def evt
        tc.addTestObjectListener([eventOccurred: { e -> count++; evt = e }] as TestObjectListener)
        def obj = new Object()
        tc.fireEventOccurred(obj)
        assert count == 1
        assert evt.is(obj)
    }

    void testDefaultForGenericList() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
            package b
            import groovy.beans.*

            class TestClass {
                @ListenerList
                List<TestObjectListener> listeners
            }

            new TestClass ()
        """)

        assert tc.listeners == []
        int count = 0
        String source = 'TestSource'
        def evt
        assert tc.testObjectListeners.size() == 0
        tc.addTestObjectListener([eventOccurred: { e -> count++; evt = e }] as TestObjectListener)
        assert tc.testObjectListeners.size() == 1
        tc.fireEventOccurred(source)
        tc.removeTestObjectListener(tc.testObjectListeners[0])
        assert tc.testObjectListeners.size() == 0
        assert count == 1
        assert evt.is(source)
    }

    void testDefaultForGenericListUsingFirstAbstractMethodsParameter() {
        GroovyShell shell = new GroovyShell()
        def tc = shell.evaluate("""
            package b
            import groovy.beans.*

            class TestClass {
                @ListenerList
                List<TestListener> listeners
            }

            new TestClass ()
        """)
        assert tc.listeners == []
        int count = 0
        String source = 'TestSource'
        String message = 'TestMessage'
        def evt
        assert tc.testListeners.size() == 0
        tc.addTestListener([eventOccurred: { e -> count++; evt = e }] as TestListener)
        assert tc.testListeners.size() == 1
        tc.fireEventOccurred(new TestEvent(source, message))
        tc.removeTestListener(tc.testListeners[0])
        assert tc.testListeners.size() == 0
        assert count == 1
        assert evt.source.is(source)
        assert evt.message.is(message)
    }

        // GROOVY-4795
        void testSynchronized() {
            GroovyShell shell = new GroovyShell()
            shell.evaluate("""
                import groovy.beans.ListenerList
                import java.lang.reflect.Modifier

                class C1 {
                    @ListenerList(synchronize=true) List<EventListener> listeners
                }
                class C2 {
                    @ListenerList(synchronize=false) List<EventListener> listeners
                }
                class C3 {
                    @ListenerList List<EventListener> listeners
                }

                assert Modifier.isSynchronized(C1.class.getMethod('getEventListeners').modifiers)
                assert !Modifier.isSynchronized(C2.class.getMethod('getEventListeners').modifiers)
                assert !Modifier.isSynchronized(C3.class.getMethod('getEventListeners').modifiers)
            """)
        }

        // GROOVY-4797
        void testPrimitiveTypes() {
            GroovyShell shell = new GroovyShell()
            shell.evaluate("""
                import groovy.beans.ListenerList
                import java.lang.reflect.Modifier

                class C {
                    @ListenerList List<Object> listeners // wait(long timeout) has primitive arg
                }

                assert C.class.getMethod('getObjects')
            """)
        }
}

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