1 files changed, 51 insertions, 0 deletions
diff --git a/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/source/LineNumberRulerColumnTest.java b/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/source/LineNumberRulerColumnTest.java
new file mode 100644
index 00000000000..8d1491b78c4
--- /dev/null
+++ b/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/source/LineNumberRulerColumnTest.java
@@ -0,0 +1,51 @@
+/*******************************************************************************
+ * Copyright (c) 2016 Rüdiger Herrmann 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:
+ *     Rüdiger Herrmann - Insufficient is-disposed check in LineNumberRulerColumn::redraw - https://bugs.eclipse.org/bugs/show_bug.cgi?id=506427
+ *******************************************************************************/
+package org.eclipse.jface.text.tests.source;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Shell;
+
+import org.eclipse.jface.text.source.CompositeRuler;
+import org.eclipse.jface.text.source.LineNumberRulerColumn;
+import org.eclipse.jface.text.source.SourceViewer;
+
+public class LineNumberRulerColumnTest {
+
+	private Shell fParent;
+
+	@Before
+	public void setUp() {
+		fParent= new Shell();
+	}
+
+	@After
+	public void tearDown() {
+		fParent.dispose();
+	}
+
+	@Test
+	public void testRedrawAfterDispose() {
+		LineNumberRulerColumn lineNumberRulerColumn= new LineNumberRulerColumn();
+		CompositeRuler ruler= new CompositeRuler();
+		ruler.addDecorator(0, lineNumberRulerColumn);
+		SourceViewer sourceViewer= new SourceViewer(fParent, ruler, SWT.NONE);
+		lineNumberRulerColumn.getControl().setSize(10, 10);
+
+		sourceViewer.getTextWidget().dispose();
+
+		lineNumberRulerColumn.redraw();
+	}
+
+}