use 'sorted' flag in indexOf

primitiveCollections/src/test/java/org/lucares/collections/IntListTest.java

@@ -604,7 +604,7 @@ public class IntListTest {
 	}
 
 	@Test
-	public void testIndexOf() {
+	public void testIndexOfOnSortedList() {
 		final IntList list = new IntList();
 		Assert.assertEquals(-1, list.indexOf(0));
 
@@ -619,7 +619,28 @@ public class IntListTest {
 	}
 
 	@Test
-	public void testIndexOfWithOffset() {
+	public void testIndexOfOnUnsortedList() {
+		final IntList list = IntList.of(2, 0, 1);
+		Assert.assertEquals(1, list.indexOf(0));
+
+		Assert.assertEquals(0, list.indexOf(2));
+		Assert.assertEquals(2, list.indexOf(1));
+		Assert.assertEquals(-1, list.indexOf(3));
+	}
+
+	@Test
+	public void testIndexOfWithOffsetOnSortedList() {
+		final IntList list = new IntList();
+		list.addAll(1, 1, 2, 3, 3);
+		Assert.assertEquals(0, list.indexOf(1, 0));
+		Assert.assertEquals(1, list.indexOf(1, 1));
+		Assert.assertEquals(2, list.indexOf(2, 2));
+		Assert.assertEquals(-1, list.indexOf(2, 3));
+		Assert.assertEquals(3, list.indexOf(3, 2));
+	}
+
+	@Test
+	public void testIndexOfWithOffsetOnUnsortedList() {
 		final IntList list = new IntList();
 		list.addAll(0, 2, 0, 2);
 		Assert.assertEquals(1, list.indexOf(2, 0));