1 files changed, 63 insertions, 0 deletions
diff --git a/tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug552096_TreeShowItemUnreliable.java b/tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug552096_TreeShowItemUnreliable.java
new file mode 100644
index 0000000000..a924e5fd86
--- /dev/null
+++ b/tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug552096_TreeShowItemUnreliable.java
@@ -0,0 +1,63 @@
+/*******************************************************************************
+ * Copyright (c) 2019 Thomas Singer 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:
+ *     Thomas Singer - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.tests.gtk.snippets;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.swt.widgets.Tree;
+import org.eclipse.swt.widgets.TreeItem;
+
+public class Bug552096_TreeShowItemUnreliable {
+
+	public static void main(String[] args) {
+		final Display display = new Display();
+		final Shell shell = new Shell(display);
+		shell.setLayout(new GridLayout());
+
+		final Button button = new Button(shell, SWT.PUSH);
+		button.setText("Add");
+		button.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false));
+
+		final Tree tree = new Tree(shell, SWT.BORDER);
+		tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
+
+		button.addListener(SWT.Selection, event -> {
+			final TreeItem rootNode = new TreeItem(tree, SWT.NONE, 0);
+			// Code below appends to the bottom of the Tree
+//			final TreeItem rootNode = new TreeItem(tree, SWT.NONE, tree.getItemCount());
+			rootNode.setText("Root " + tree.getItemCount());
+
+			final TreeItem childItem = new TreeItem(rootNode, SWT.NONE);
+			childItem.setText("Child");
+			rootNode.setExpanded(true);
+
+			tree.showItem(rootNode);
+		});
+
+		shell.setSize(400, 300);
+		shell.open();
+
+		while (!shell.isDisposed()) {
+			if (!display.readAndDispatch()) {
+				display.sleep();
+			}
+		}
+
+		display.dispose();
+	}
+}