Migrate Drag-and-Drop tests to JUnit 5 and provide basic DragOperations implementation

Author: aloowood

tests/org.eclipse.ui.tests.dnd/META-INF/MANIFEST.MF

@@ -16,4 +16,8 @@ Require-Bundle: org.eclipse.swt,
  junit-platform-suite-api;bundle-version="1.12.2"
 Automatic-Module-Name: org.eclipse.ui.tests.dnd
 Bundle-RequiredExecutionEnvironment: JavaSE-21
-Import-Package: org.eclipse.ui.part
+Import-Package: org.eclipse.e4.ui.model.application.ui.basic,
+ org.eclipse.ui.part,
+ org.junit.jupiter.params;version="[5.12.0,6.0.0)",
+ org.junit.jupiter.params.provider;version="[5.12.0,6.0.0)",
+ org.junit.platform.engine.support.descriptor;version="[1.12.0,2.0.0)"

tests/org.eclipse.ui.tests.dnd/build.properties

@@ -1,4 +1,21 @@
+###############################################################################
+# Copyright (c) 2025 Ali Muhsin KÖKSAL 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
+###############################################################################
+
 source.. = src/
 output.. = bin/
 bin.includes = META-INF/,\
-               .
+               .,\
+               test.xml
+
+
+# Maven properties, see https://github.com/eclipse/tycho/wiki/Tycho-Pomless
+pom.model.property.testClass = org.eclipse.ui.tests.dnd.DragTestSuite
+pom.model.property.defaultSigning-excludeInnerJars = true

tests/org.eclipse.ui.tests.dnd/src/org/eclipse/ui/tests/dnd/DragOperations.java

@@ -4,33 +4,46 @@
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Event;
 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.IViewPart;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.IWorkbenchPartReference;
-import org.junit.Assert;
 
 public class DragOperations {
 
-	/**
-	 * Drags the given view OR editor to the given location (i.e. it only cares that we're given
-	 * a 'Part' and doesn't care whether it's a 'View' or an 'Editor'.
-	 * <p>
-	 * This method should eventually replace the original one once the Workbench has been updated
-	 * to handle Views and Editors without distincton.
-	 */
 	public static void drag(IWorkbenchPart part, TestDropLocation target, boolean wholeFolder) {
-//        DragUtil.forceDropLocation(target);
+	    Display.getDefault().syncExec(() -> {
+	        Point startLocation = Display.getDefault().getCursorLocation();
+	        Point endLocation;
+
+	        if (wholeFolder) {
+	            Rectangle bounds = part.getSite().getShell().getBounds();
+	            endLocation = new Point(bounds.x + bounds.width / 2, bounds.y + bounds.height / 2);
+	        } else {
+	            endLocation = target.getLocation();
+	        }
+
+	        Event press = new Event();
+	        press.type = SWT.MouseDown;
+	        press.x = startLocation.x;
+	        press.y = startLocation.y;
+	        Display.getDefault().post(press);
 
-//        PartSite site = (PartSite) part.getSite();
-//        PartPane pane = site.getPane();
-//        PartStack parent = ((PartStack) (pane.getContainer()));
-//
-//        parent.paneDragStart(wholeFolder ? null : pane, Display.getDefault().getCursorLocation(), false);
+	        Event move = new Event();
+	        move.type = SWT.MouseMove;
+	        move.x = endLocation.x;
+	        move.y = endLocation.y;
+	        Display.getDefault().post(move);
 
-		Assert.fail("DND needs some updating");
-//        DragUtil.forceDropLocation(null);
+	        Event release = new Event();
+	        release.type = SWT.MouseUp;
+	        release.x = endLocation.x;
+	        release.y = endLocation.y;
+	        Display.getDefault().post(release);
+	    });
 	}
 
 	/**