eu.numberfour.n4js.tests.bugs.GH_170_ImageCaching

Introduction

Here is the source code for eu.numberfour.n4js.tests.bugs.GH_170_ImageCaching_PluginUITest.java
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/**
 * Copyright (c) 2016 NumberFour AG.
 * 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:
 *   NumberFour AG - Initial API and implementation
 */
package eu.numberfour.n4js.tests.bugs;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.PlatformUI;
import org.junit.BeforeClass;
import org.junit.Test;

import eu.numberfour.n4js.ui.ImageDescriptorCache.ImageRef;

/**
 * Class for testing the {@link ImageDescriptor} and {@link Image} caching.
 */
public class GH_170_ImageCaching_PluginUITest extends AbstractIDEBUG_Test {

    /**
     * Asserts the test setup, namely that the {@link IWorkbench workbench} is running.
     */
    @BeforeClass
    public static void assertWorkbenchIsRunning() {
        assertTrue("Expected running workbench.", PlatformUI.isWorkbenchRunning());
    }

    /**
     * Checks the direct {@link ImageDescriptor image descriptor} caching.
     */
    @Test
    public void testDirectImageDescriptorCaching() {
        final ImageDescriptor desc1 = ImageRef.LIB_PATH.asImageDescriptor().orNull();
        final ImageDescriptor desc2 = ImageRef.LIB_PATH.asImageDescriptor().orNull();
        assertTrue("Expected exactly same reference of image descriptors.", desc1 == desc2);
    }

    /**
     * Checks the direct {@link Image image} caching.
     */
    @Test
    public void testDirectImageCaching() {
        final Image img1 = ImageRef.LIB_PATH.asImage().orNull();
        final Image img2 = ImageRef.LIB_PATH.asImage().orNull();
        assertTrue("Expected exactly same reference of images.", img1 == img2);
    }

    /**
     * Checks the indirect {@link ImageDescriptor image descriptor} caching.
     */
    @Test
    public void testIndirectImageDescriptorCaching() {
        final Image img1 = ImageRef.LIB_PATH.asImage().orNull();
        final Image img2 = ImageRef.LIB_PATH.asImage().orNull();
        final ImageDescriptor desc1 = ImageDescriptor.createFromImage(img1);
        final ImageDescriptor desc2 = ImageDescriptor.createFromImage(img2);
        assertTrue("Expected different reference of image descriptors.", desc1 != desc2);
    }

    /**
     * Checks the indirect {@link Image image} caching.
     */
    @Test
    public void testIndirectImageCaching() {
        final ImageDescriptor desc1 = ImageRef.LIB_PATH.asImageDescriptor().orNull();
        final ImageDescriptor desc2 = ImageRef.LIB_PATH.asImageDescriptor().orNull();
        final Image img1 = desc1.createImage();
        final Image img2 = desc2.createImage();
        assertTrue("Expected different reference of images.", img1 != img2);
    }

}
eu.numberfour.n4js.tests.bugs.GH_170_ImageCaching_PluginUITest.java Source code

Introduction

Source
