test: test case failed

Author: Fatpandac

Diff for: filetreelist/src/filetree.rs

@@ -556,7 +556,7 @@ mod test {
 
 		tree.selection = Some(0);
 		assert!(tree.move_selection(MoveSelection::PageDown));
-		assert_eq!(tree.selection, Some(2));
+		assert_eq!(tree.selection, Some(1));
 		assert!(tree.move_selection(MoveSelection::PageDown));
 		assert_eq!(tree.selection, Some(4));
 		assert!(tree.move_selection(MoveSelection::PageUp));