@Test
public void getLevenshteinDistance() {

	assertEquals(0, TextUtil.getLevenshteinDistance(null, null));
	assertEquals(0, TextUtil.getLevenshteinDistance(null, "")); //$NON-NLS-1$
	assertEquals(0, TextUtil.getLevenshteinDistance("", null)); //$NON-NLS-1$
	assertEquals(0, TextUtil.getLevenshteinDistance("", "")); //$NON-NLS-1$ //$NON-NLS-2$
	assertEquals(1, TextUtil.getLevenshteinDistance("", "a")); //$NON-NLS-1$ //$NON-NLS-2$
	assertEquals(3, TextUtil.getLevenshteinDistance("a", "abcd")); //$NON-NLS-1$ //$NON-NLS-2$
}