tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/scenarios/CustomConverterScenarios.java

/*******************************************************************************
 * Copyright (c) 2005, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Brad Reynolds - bug 116920
 *******************************************************************************/
package org.eclipse.jface.tests.databinding.scenarios;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.beans.BeansObservables;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.examples.databinding.model.Adventure;
import org.eclipse.jface.examples.databinding.model.PriceModelObject;
import org.eclipse.jface.examples.databinding.model.SampleData;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Spinner;

/**
 * To run the tests in this class, right-click and select "Run As JUnit Plug-in
 * Test". This will also start an Eclipse instance. To clean up the launch
 * configuration, open up its "Main" tab and select "[No Application] - Headless
 * Mode" as the application to run.
 */

public class CustomConverterScenarios extends ScenariosTestCase {

    private Adventure skiTrip;

    protected void setUp() throws Exception {
        super.setUp();
        skiTrip = SampleData.WINTER_HOLIDAY;
    }

    protected void tearDown() throws Exception {
        // do any teardown work here
        super.tearDown();
    }

    public void testScenario01() {
        DataBindingContext dbc = getDbc();
        Spinner spinner_dollars = new Spinner(getComposite(), SWT.NONE);
        spinner_dollars.setMaximum(10000);
        Spinner spinner_cents = new Spinner(getComposite(), SWT.NONE);

        // The price object is a double which contains both the dollars and
        // cents
        // To allow this to be worked on with two separate spinner controls
        // (which get and set int values)
        // an intermediate object is used
        PriceModelObject priceModel = new PriceModelObject();

        dbc.bindValue(BeansObservables.observeValue(priceModel, "price"), BeansObservables.observeValue(skiTrip,
                "price"), null, null);

        dbc.bindValue(SWTObservables.observeSelection(spinner_dollars),
                BeansObservables.observeValue(priceModel, "dollars"),
                null, null);

        dbc.bindValue(SWTObservables.observeSelection(spinner_cents),
                BeansObservables.observeValue(priceModel, "cents"),
                null, null);

        // spinEventLoop(1);
        // Make sure that the selection on the spinner_dollars matches the
        // dollars of the price
        assertEquals(spinner_dollars.getSelection(), new Double(skiTrip.getPrice()).intValue());
        // Make sure that the selection on the spinner_cents matches the dollars
        // of the price
        Double doublePrice = new Double(skiTrip.getPrice());
        double cents = 100 * doublePrice.doubleValue() - 100 * doublePrice.intValue();
        assertEquals(spinner_cents.getSelection(), (int) cents);

        // Change the selection on the spinner_dollars to be $50 and make sure
        // the model is updated with the cents included
        spinner_dollars.setSelection(50);
        double expectedPrice = 50 + cents / 100;
        assertEquals(expectedPrice, skiTrip.getPrice(), 0.01);

        // Change the selection on the spinner_cents to be 27 and make sure the
        // model is updated with the dollars included
        spinner_cents.setSelection(27);
        assertEquals(50.27, skiTrip.getPrice(), 0.01);

        // Change the model to be $60.99 dollars and make sure the
        // spinner_dollars is 60 and spinner_cents is 99
        skiTrip.setPrice(60.99);
        assertEquals(60, spinner_dollars.getSelection());
        assertEquals(99, spinner_cents.getSelection());

    }

}