Bug 166600 [DataBinding] Refactor tests to be in the correct packages
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/IDiffsTest.java
/**
	 * Asserts that the {@link ListDiff#toString()} implementation doesn't throw a NPE if any of its properties are <code>null</code>.
	 *
	 */
	public void test_ListDiff() {
		ListDiff diff = new ListDiff() {
			public ListDiffEntry[] getDifferences() {
				return null;
			}
		};
		
		try {
			diff.toString();
			assertTrue(true);
		} catch (NullPointerException e) {
			fail("NPE was thrown.");
		}
	}
	
	/**
	 * Asserts that if the {@link ListDiff#toString()} implementation doesn't throw a NEP if the differences contains a <code>null</code> item.
	 */
	public void test_ListDiff2() {
		ListDiff diff = new ListDiff() {
			public ListDiffEntry[] getDifferences() {
				return new ListDiffEntry[1];
			}
		};
		
		try {