TransformationPropertyValueModelTests.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.test.uitools.app;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.eclipse.persistence.tools.workbench.test.utility.TestTools;
import org.eclipse.persistence.tools.workbench.uitools.app.PropertyValueModel;
import org.eclipse.persistence.tools.workbench.uitools.app.SimplePropertyValueModel;
import org.eclipse.persistence.tools.workbench.uitools.app.TransformationPropertyValueModel;
import org.eclipse.persistence.tools.workbench.uitools.app.ValueModel;
import org.eclipse.persistence.tools.workbench.utility.AbstractModel;
import org.eclipse.persistence.tools.workbench.utility.BidiTransformer;


public class TransformationPropertyValueModelTests extends TestCase {
    private PropertyValueModel objectHolder;
    PropertyChangeEvent event;

    private PropertyValueModel transformationObjectHolder;
    PropertyChangeEvent transformationEvent;

    public static Test suite() {
        return new TestSuite(TransformationPropertyValueModelTests.class);
    }

    public TransformationPropertyValueModelTests(String name) {
        super(name);
    }

    protected void setUp() throws Exception {
        super.setUp();
        this.objectHolder = new SimplePropertyValueModel("foo");
        this.transformationObjectHolder = new TransformationPropertyValueModel(this.objectHolder, this.buildTransformer());
    }

    private BidiTransformer buildTransformer() {
        return new BidiTransformer() {
            public Object transform(Object o) {
                return (o == null) ? null : ((String) o).toUpperCase();
            }
            public Object reverseTransform(Object o) {
                return (o == null) ? null : ((String) o).toLowerCase();
            }
        };
    }

    protected void tearDown() throws Exception {
        TestTools.clear(this);
        super.tearDown();
    }

    public void testGetValue() {
        assertEquals("foo", this.objectHolder.getValue());
        assertEquals("FOO", this.transformationObjectHolder.getValue());

        this.objectHolder.setValue("bar");
        assertEquals("bar", this.objectHolder.getValue());
        assertEquals("BAR", this.transformationObjectHolder.getValue());

        this.objectHolder.setValue("baz");
        assertEquals("baz", this.objectHolder.getValue());
        assertEquals("BAZ", this.transformationObjectHolder.getValue());

        this.objectHolder.setValue(null);
        assertNull(this.objectHolder.getValue());
        assertNull(this.transformationObjectHolder.getValue());

        this.objectHolder.setValue("foo");
        assertEquals("foo", this.objectHolder.getValue());
        assertEquals("FOO", this.transformationObjectHolder.getValue());
    }

    public void testSetValue() {
        this.transformationObjectHolder.setValue("BAR");
        assertEquals("bar", this.objectHolder.getValue());
        assertEquals("BAR", this.transformationObjectHolder.getValue());

        this.transformationObjectHolder.setValue("Foo");
        assertEquals("foo", this.objectHolder.getValue());
        assertEquals("FOO", this.transformationObjectHolder.getValue());

        this.transformationObjectHolder.setValue(null);
        assertNull(this.objectHolder.getValue());
        assertNull(this.transformationObjectHolder.getValue());

        this.transformationObjectHolder.setValue("baz");
        assertEquals("baz", this.objectHolder.getValue());
        assertEquals("BAZ", this.transformationObjectHolder.getValue());
    }

    public void testLazyListening() {
        assertTrue(((AbstractModel) this.objectHolder).hasNoPropertyChangeListeners(ValueModel.VALUE));
        PropertyChangeListener listener = this.buildTransformationListener();
        this.transformationObjectHolder.addPropertyChangeListener(listener);
        assertTrue(((AbstractModel) this.objectHolder).hasAnyPropertyChangeListeners(ValueModel.VALUE));
        this.transformationObjectHolder.removePropertyChangeListener(listener);
        assertTrue(((AbstractModel) this.objectHolder).hasNoPropertyChangeListeners(ValueModel.VALUE));

        this.transformationObjectHolder.addPropertyChangeListener(ValueModel.VALUE, listener);
        assertTrue(((AbstractModel) this.objectHolder).hasAnyPropertyChangeListeners(ValueModel.VALUE));
        this.transformationObjectHolder.removePropertyChangeListener(ValueModel.VALUE, listener);
        assertTrue(((AbstractModel) this.objectHolder).hasNoPropertyChangeListeners(ValueModel.VALUE));
    }

    public void testPropertyChange1() {
        this.objectHolder.addPropertyChangeListener(this.buildListener());
        this.transformationObjectHolder.addPropertyChangeListener(this.buildTransformationListener());
        this.verifyPropertyChanges();
    }

    public void testPropertyChange2() {
        this.objectHolder.addPropertyChangeListener(ValueModel.VALUE, this.buildListener());
        this.transformationObjectHolder.addPropertyChangeListener(ValueModel.VALUE, this.buildTransformationListener());
        this.verifyPropertyChanges();
    }

    private void verifyPropertyChanges() {
        this.event = null;
        this.transformationEvent = null;
        this.objectHolder.setValue("bar");
        this.verifyEvent(this.event, this.objectHolder, "foo", "bar");
        this.verifyEvent(this.transformationEvent, this.transformationObjectHolder, "FOO", "BAR");

        this.event = null;
        this.transformationEvent = null;
        this.objectHolder.setValue("baz");
        this.verifyEvent(this.event, this.objectHolder, "bar", "baz");
        this.verifyEvent(this.transformationEvent, this.transformationObjectHolder, "BAR", "BAZ");

        this.event = null;
        this.transformationEvent = null;
        this.objectHolder.setValue("Foo");
        this.verifyEvent(this.event, this.objectHolder, "baz", "Foo");
        this.verifyEvent(this.transformationEvent, this.transformationObjectHolder, "BAZ", "FOO");

        this.event = null;
        this.transformationEvent = null;
        this.objectHolder.setValue("FOO");
        this.verifyEvent(this.event, this.objectHolder, "Foo", "FOO");
        assertNull(this.transformationEvent);

        this.event = null;
        this.transformationEvent = null;
        this.objectHolder.setValue(null);
        this.verifyEvent(this.event, this.objectHolder, "FOO", null);
        this.verifyEvent(this.transformationEvent, this.transformationObjectHolder, "FOO", null);

        this.event = null;
        this.transformationEvent = null;
        this.objectHolder.setValue("bar");
        this.verifyEvent(this.event, this.objectHolder, null, "bar");
        this.verifyEvent(this.transformationEvent, this.transformationObjectHolder, null, "BAR");
    }

    private PropertyChangeListener buildListener() {
        return new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent e) {
                TransformationPropertyValueModelTests.this.event = e;
            }
        };
    }

    private PropertyChangeListener buildTransformationListener() {
        return new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent e) {
                TransformationPropertyValueModelTests.this.transformationEvent = e;
            }
        };
    }

    private void verifyEvent(PropertyChangeEvent e, Object source, Object oldValue, Object newValue) {
        assertEquals(source, e.getSource());
        assertEquals(ValueModel.VALUE, e.getPropertyName());
        assertEquals(oldValue, e.getOldValue());
        assertEquals(newValue, e.getNewValue());
    }

}