Fixed some exotic singular cases that were being autosingularized incorrectly.

src/core/lombok/core/handlers/singulars.txt

@@ -48,7 +48,9 @@ hives = hive
 -shes = sh
 -lves = lf
 -rves = rf
--ves = fe
+saves = save
+Leaves = leaf
+-ves = !
 -ss = !
 -us = !
 -s = 

test/core/src/lombok/core/TestSingulars.java

@@ -22,34 +22,34 @@
 package lombok.core;
 
 import static lombok.core.handlers.Singulars.autoSingularize;
-import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.*;
 
 import org.junit.Test;
 
 public class TestSingulars {
 	@Test
 	public void testSingulars() {
-		assertEquals(null, autoSingularize("axes"));
+		assertNull("axes", autoSingularize("axes"));
 		assertEquals("adjective", autoSingularize("adjectives"));
 		assertEquals("bus", autoSingularize("buses"));
 		assertEquals("octopus", autoSingularize("octopodes"));
-		assertEquals(null, autoSingularize("octopi"));
+		assertNull("octopi", autoSingularize("octopi"));
 		assertEquals("elf", autoSingularize("elves"));
 		assertEquals("jack", autoSingularize("jacks"));
 		assertEquals("colloquy", autoSingularize("colloquies"));
-		assertEquals(null, autoSingularize("series"));
+		assertNull("series", autoSingularize("series"));
 		assertEquals("man", autoSingularize("men"));
-		assertEquals(null, autoSingularize("highwaymen"));
+		assertNull("highwaymen", autoSingularize("highwaymen"));
 		assertEquals("caveMan", autoSingularize("caveMen"));
-		assertEquals(null, autoSingularize("jackss"));
-		assertEquals(null, autoSingularize("virus"));
+		assertNull("jackss", autoSingularize("jackss"));
+		assertNull("virus", autoSingularize("virus"));
 		assertEquals("quiz", autoSingularize("quizzes"));
 		assertEquals("database", autoSingularize("databases"));
 		assertEquals("dataBase", autoSingularize("dataBases"));
 		assertEquals("Query", autoSingularize("Queries"));
 		assertEquals("Movie", autoSingularize("Movies"));
 		assertEquals("cafe", autoSingularize("cafes"));
-		assertEquals("cave", autoSingularize("caves"));
+		assertNull("caves", autoSingularize("caves"));
 		assertEquals("leaf", autoSingularize("leaves"));
 		assertEquals("autosave", autoSingularize("autosaves"));
 	}