only fire change events if selection/cursor really changes

test/NavigationTest.js

@@ -21,7 +21,7 @@ var NavigationTest = TestCase("NavigationTest",
         var doc = this.createTextDocument(200, 10);
         var editor = new ace.Editor(new MockRenderer(), doc);
 
-        editor.scrollToRow(editor.getLastVisibleRow() + 20);
+        editor.moveCursorTo(editor.getLastVisibleRow() + 20);
         editor.navigateFileStart();
 
         assertEquals(0, editor.getFirstVisibleRow());

test/SelectionTest.js

@@ -216,5 +216,35 @@ var SelectionTest = TestCase("SelectionTest",
         var range = selection.getRange();
         assertPosition(0, 4, range.start);
         assertPosition(0, 6, range.end);
+    },
+
+    "test: moving cursor should fire a 'changeCursor' event" : function() {
+        var doc = new ace.Document("Juhu  Kinners");
+        var selection = doc.getSelection();
+
+        selection.moveCursorTo(0, 5);
+
+        var called = false;
+        selection.addEventListener("changeCursor", function() {
+           called = true;
+        });
+
+        selection.moveCursorTo(0, 6);
+        assertTrue(called);
+    },
+
+    "test: calling setCursor with the same position should not fire an event": function() {
+        var doc = new ace.Document("Juhu  Kinners");
+        var selection = doc.getSelection();
+
+        selection.moveCursorTo(0, 5);
+
+        var called = false;
+        selection.addEventListener("changeCursor", function() {
+           called = true;
+        });
+
+        selection.moveCursorTo(0, 5);
+        assertFalse(called);
     }
 });