Fixed problem with split tests,

added new function that sets the codemirror instance cursor coords

IPython/html/tests/notebook/dualmode.js

@@ -269,8 +269,8 @@ casper.notebook_test(function () {
         this.select_cell(0);
         this.trigger_keydown('a', 'enter'); // Create cell above and enter edit mode.
         this.validate_state('a, enter', 'edit', 0);
-        this.trigger_keydown('a', 'b', 'c', 'd', 'left', 'left'); // Type 'abcd' and place the cursor in the middle.
-        this.validate_state('a, enter', 'edit', 0);
+        this.set_cell_text(0, 'abcd');
+        this.set_cell_editor_cursor(0, 0, 2);
         this.test.assertEquals(this.get_cell_text(0), 'abcd', 'Verify that cell 0 has the new contents.');
         this.trigger_keydown('alt+-'); // Split
         this.test.assertEquals(this.get_cell_text(0), 'ab', 'split; Verify that cell 0 has the first half.');

IPython/html/tests/util.js

@@ -246,12 +246,19 @@ casper.click_cell_editor = function(index) {
     // the code used in Code Mirror that handles the mousedown event on a
     // region of codemirror that the user can focus.
     this.evaluate(function (i) {
-        cm = IPython.notebook.get_cell(i).code_mirror;
+        var cm = IPython.notebook.get_cell(i).code_mirror;
         if (cm.options.readOnly != "nocursor" && (document.activeElement != cm.display.input))
             cm.display.input.focus();
     }, {i: index});
 };
 
+casper.set_cell_editor_cursor = function(index, line_index, char_index) {
+    // Set the Code Mirror instance cursor's location.
+    this.evaluate(function (i, l, c) {
+        IPython.notebook.get_cell(i).code_mirror.setCursor(l, c);
+    }, {i: index, l: line_index, c: char_index});
+};
+
 casper.focus_notebook = function() {
     this.evaluate(function (){
         $('#notebook').focus();