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diff --git a/common/tests/org.eclipse.jpt.common.utility.tests/src/org/eclipse/jpt/common/utility/tests/internal/transformer/TransformerToolsTests.java b/common/tests/org.eclipse.jpt.common.utility.tests/src/org/eclipse/jpt/common/utility/tests/internal/transformer/TransformerToolsTests.java
new file mode 100644
index 0000000000..61377af2b4
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+++ b/common/tests/org.eclipse.jpt.common.utility.tests/src/org/eclipse/jpt/common/utility/tests/internal/transformer/TransformerToolsTests.java
@@ -0,0 +1,182 @@
+/*******************************************************************************
+ * Copyright (c) 2016 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.common.utility.tests.internal.transformer;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.NoSuchElementException;
+import org.eclipse.jpt.common.utility.internal.transformer.TransformerTools;
+import org.eclipse.jpt.common.utility.transformer.Transformer;
+import junit.framework.TestCase;
+
+@SuppressWarnings("nls")
+public class TransformerToolsTests
+	extends TestCase
+{
+	public TransformerToolsTests(String name) {
+		super(name);
+	}
+
+	public void testCollectionFirstElementTransformer() {
+		Collection<String> list = new ArrayList<>();
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionFirstElementTransformer();
+		assertNull(transformer.transform(list));
+		list.add("foo");
+		assertEquals("foo", transformer.transform(list));
+		list.add("bar");
+		assertEquals("foo", transformer.transform(list));
+		list.remove("foo");
+		assertEquals("bar", transformer.transform(list));
+		list.remove("bar");
+		assertNull(transformer.transform(list));
+	}
+
+	public void testCollectionFirstElementTransformer_NPE() {
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionFirstElementTransformer();
+		boolean exCaught = false;
+		try {
+			String s = transformer.transform(null);
+			fail("bogus: " + s);
+		} catch (NullPointerException ex) {
+			exCaught = true;
+		}
+		assertTrue(exCaught);
+	}
+
+	public void testCollectionFirstElementTransformer_() {
+		Collection<String> list = new ArrayList<>();
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionLastElementTransformer_();
+		boolean exCaught = false;
+		try {
+			String bogus = transformer.transform(list);
+			fail("bogus output: " + bogus);
+		} catch (NoSuchElementException ex) {
+			exCaught = true;
+		}
+		assertTrue(exCaught);
+		list.add("foo");
+		assertEquals("foo", transformer.transform(list));
+		list.add("bar");
+		assertEquals("bar", transformer.transform(list));
+		list.remove("foo");
+		assertEquals("bar", transformer.transform(list));
+		list.remove("bar");
+		exCaught = false;
+		try {
+			String bogus = transformer.transform(list);
+			fail("bogus output: " + bogus);
+		} catch (NoSuchElementException ex) {
+			exCaught = true;
+		}
+	}
+
+	public void testCollectionFirstElementTransformer__NPE() {
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionFirstElementTransformer_();
+		boolean exCaught = false;
+		try {
+			String s = transformer.transform(null);
+			fail("bogus: " + s);
+		} catch (NullPointerException ex) {
+			exCaught = true;
+		}
+		assertTrue(exCaught);
+	}
+
+	public void testCollectionLastElementTransformer() {
+		Collection<String> list = new ArrayList<>();
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionLastElementTransformer();
+		assertNull(transformer.transform(list));
+		list.add("foo");
+		assertEquals("foo", transformer.transform(list));
+		list.add("bar");
+		assertEquals("bar", transformer.transform(list));
+		list.remove("foo");
+		assertEquals("bar", transformer.transform(list));
+		list.remove("bar");
+		assertNull(transformer.transform(list));
+	}
+
+	public void testCollectionLastElementTransformer_NPE() {
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionLastElementTransformer();
+		boolean exCaught = false;
+		try {
+			String s = transformer.transform(null);
+			fail("bogus: " + s);
+		} catch (NullPointerException ex) {
+			exCaught = true;
+		}
+		assertTrue(exCaught);
+	}
+
+	public void testCollectionLastElementTransformer_() {
+		Collection<String> list = new ArrayList<>();
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionLastElementTransformer_();
+		boolean exCaught = false;
+		try {
+			String bogus = transformer.transform(list);
+			fail("bogus output: " + bogus);
+		} catch (NoSuchElementException ex) {
+			exCaught = true;
+		}
+		assertTrue(exCaught);
+		list.add("foo");
+		assertEquals("foo", transformer.transform(list));
+		list.add("bar");
+		assertEquals("bar", transformer.transform(list));
+		list.remove("foo");
+		assertEquals("bar", transformer.transform(list));
+		list.remove("bar");
+		exCaught = false;
+		try {
+			String bogus = transformer.transform(list);
+			fail("bogus output: " + bogus);
+		} catch (NoSuchElementException ex) {
+			exCaught = true;
+		}
+	}
+
+	public void testCollectionLastElementTransformer__NPE() {
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionLastElementTransformer_();
+		boolean exCaught = false;
+		try {
+			String s = transformer.transform(null);
+			fail("bogus: " + s);
+		} catch (NullPointerException ex) {
+			exCaught = true;
+		}
+		assertTrue(exCaught);
+	}
+
+	public void testCollectionSingleElementTransformer() {
+		Collection<String> list = new ArrayList<>();
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionSingleElementTransformer();
+		assertNull(transformer.transform(list));
+		list.add("foo");
+		assertEquals("foo", transformer.transform(list));
+		list.add("bar");
+		assertNull(transformer.transform(list));
+		list.remove("foo");
+		assertEquals("bar", transformer.transform(list));
+		list.remove("bar");
+		assertNull(transformer.transform(list));
+	}
+
+	public void testCollectionSingleElementTransformer_NPE() {
+		Transformer<Collection<? extends String>, String> transformer = TransformerTools.collectionSingleElementTransformer();
+		boolean exCaught = false;
+		try {
+			String s = transformer.transform(null);
+			fail("bogus: " + s);
+		} catch (NullPointerException ex) {
+			exCaught = true;
+		}
+		assertTrue(exCaught);
+	}
+}