1 files changed, 127 insertions, 0 deletions
diff --git a/jpa/tests/org.eclipse.jpt.utility.tests/src/org/eclipse/jpt/utility/tests/internal/iterators/EmptyListIteratorTests.java b/jpa/tests/org.eclipse.jpt.utility.tests/src/org/eclipse/jpt/utility/tests/internal/iterators/EmptyListIteratorTests.java
new file mode 100644
index 0000000000..35c8efc011
--- /dev/null
+++ b/jpa/tests/org.eclipse.jpt.utility.tests/src/org/eclipse/jpt/utility/tests/internal/iterators/EmptyListIteratorTests.java
@@ -0,0 +1,127 @@
+/*******************************************************************************
+ * Copyright (c) 2005, 2007 Oracle. 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:
+ *     Oracle - initial API and implementation
+ ******************************************************************************/
+package org.eclipse.jpt.utility.tests.internal.iterators;
+
+import java.util.ListIterator;
+import java.util.NoSuchElementException;
+import junit.framework.TestCase;
+import org.eclipse.jpt.utility.internal.iterators.EmptyListIterator;
+
+public class EmptyListIteratorTests extends TestCase {
+
+	public EmptyListIteratorTests(String name) {
+		super(name);
+	}
+
+	public void testHasNext() {
+		int i = 0;
+		for (ListIterator<Object> stream = EmptyListIterator.instance(); stream.hasNext();) {
+			stream.next();
+			i++;
+		}
+		assertEquals(0, i);
+	}
+
+	public void testNext() {
+		for (ListIterator<Object> stream = EmptyListIterator.instance(); stream.hasNext();) {
+			fail("bogus element: " + stream.next());
+		}
+	}
+
+	public void testNextIndex() {
+		ListIterator<Object> stream = EmptyListIterator.instance();
+		assertEquals(0, stream.nextIndex());
+	}
+
+	public void testHasPrevious() {
+		ListIterator<Object> stream = EmptyListIterator.instance();
+		int i = 0;
+		while (stream.hasPrevious()) {
+			stream.previous();
+			i++;
+		}
+		assertEquals(0, i);
+
+		while (stream.hasNext()) {
+			stream.next();
+		}
+		i = 0;
+		while (stream.hasPrevious()) {
+			stream.previous();
+			i++;
+		}
+		assertEquals(0, i);
+	}
+
+	public void testPrevious() {
+		ListIterator<Object> stream = EmptyListIterator.instance();
+		while (stream.hasPrevious()) {
+			fail("bogus element: " + stream.previous());
+		}
+		while (stream.hasNext()) {
+			stream.next();
+		}
+		while (stream.hasPrevious()) {
+			fail("bogus element: " + stream.previous());
+		}
+	}
+
+	public void testPreviousIndex() {
+		ListIterator<Object> stream = EmptyListIterator.instance();
+		assertEquals(-1, stream.previousIndex());
+	}
+
+	public void testNoSuchElementException() {
+		boolean exCaught = false;
+		ListIterator<Object> stream = EmptyListIterator.instance();
+		Object element = null;
+		while (stream.hasNext()) {
+			element = stream.next();
+		}
+		try {
+			element = stream.next();
+		} catch (NoSuchElementException ex) {
+			exCaught = true;
+		}
+		assertTrue("NoSuchElementException not thrown (next): " + element, exCaught);
+		while (stream.hasPrevious()) {
+			element = stream.previous();
+		}
+		try {
+			element = stream.previous();
+		} catch (NoSuchElementException ex) {
+			exCaught = true;
+		}
+		assertTrue("NoSuchElementException not thrown (previous): " + element, exCaught);
+	}
+
+	public void testUnsupportedOperationException() {
+		boolean exCaught = false;
+		try {
+			EmptyListIterator.instance().remove();
+		} catch (UnsupportedOperationException ex) {
+			exCaught = true;
+		}
+		assertTrue("UnsupportedOperationException not thrown (remove)", exCaught);
+		try {
+			EmptyListIterator.instance().set(new Object());
+		} catch (UnsupportedOperationException ex) {
+			exCaught = true;
+		}
+		assertTrue("UnsupportedOperationException not thrown (set)", exCaught);
+		try {
+			EmptyListIterator.instance().add(new Object());
+		} catch (UnsupportedOperationException ex) {
+			exCaught = true;
+		}
+		assertTrue("UnsupportedOperationException not thrown (add)", exCaught);
+	}
+
+}