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/*******************************************************************************
* Copyright (c) 2011 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.compare.tests;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import junit.framework.TestCase;
import org.eclipse.compare.CompareConfiguration;
import org.eclipse.compare.IStreamContentAccessor;
import org.eclipse.compare.ITypedElement;
import org.eclipse.compare.internal.CompareUIPlugin;
import org.eclipse.compare.internal.ViewerDescriptor;
import org.eclipse.compare.structuremergeviewer.DiffNode;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.swt.graphics.Image;
public class CompareUIPluginTest extends TestCase {
private static class UnknownTypedElement implements ITypedElement {
public Image getImage() {
return null;
}
public String getName() {
return "test";
}
public String getType() {
return UNKNOWN_TYPE;
}
}
private static class TextTypedElement implements ITypedElement {
public Image getImage() {
return null;
}
public String getName() {
return "test";
}
public String getType() {
return TEXT_TYPE;
}
}
private static class TextTypedElementStreamAccessor implements ITypedElement, IStreamContentAccessor {
public Image getImage() {
return null;
}
public String getName() {
return "test";
}
public String getType() {
return TEXT_TYPE;
}
public InputStream getContents() throws CoreException {
/*
* Whatever we return has no importance as long as it is not "null", this is only to make
* CompareUIPlugin#guessType happy. However, it is only happy if what we return resembles a text.
*/
return new ByteArrayInputStream(new byte[] {' '});
}
}
public void testFindContentViewerDescriptor_UnknownType() {
CompareConfiguration cc = new CompareConfiguration();
DiffNode in = new DiffNode(new UnknownTypedElement(), new UnknownTypedElement());
ViewerDescriptor[] result = CompareUIPlugin.getDefault().findContentViewerDescriptor(null, in, cc);
// API Compatibility : "no descriptor found" should return a null array instead of a 0-lengthed one.
assertNull(result);
}
public void testFindContentViewerDescriptor_TextType_NotStreamAccessor() {
CompareConfiguration cc = new CompareConfiguration();
DiffNode in = new DiffNode(new TextTypedElement(), new TextTypedElement());
ViewerDescriptor[] result = CompareUIPlugin.getDefault().findContentViewerDescriptor(null, in, cc);
/*
* "TextTypedElement" is "text" typed : it thus has a Content Viewer attached. However, this content
* viewer is currently NOT returned because of bug 293926
*/
assertNotNull(result);
assertEquals(1, result.length);
}
public void testFindContentViewerDescriptorForTextType_StreamAccessor() {
CompareConfiguration cc = new CompareConfiguration();
DiffNode in = new DiffNode(new TextTypedElementStreamAccessor(), new TextTypedElementStreamAccessor());
ViewerDescriptor[] result = CompareUIPlugin.getDefault().findContentViewerDescriptor(null, in, cc);
/*
* "TextTypedElement" is "text" typed : it thus has a Content Viewer attached. However, the content
* viewer will only be returned because we made our "ITypedElement" be an IStreamContentAccessor.
*/
assertNotNull(result);
assertEquals(1, result.length);
}
}
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