diff --git a/IPython/html/tests/notebook/dualmode.js b/IPython/html/tests/notebook/dualmode.js
new file mode 100644
index 0000000..1c69c0a
--- /dev/null
+++ b/IPython/html/tests/notebook/dualmode.js
@@ -0,0 +1,231 @@
+// Test the notebook dual mode feature.
+
+// Test
+casper.notebook_test(function () {
+ var index = this.append_cell('print("a")');
+ this.execute_cell_then(index);
+ index = this.append_cell('print("b")');
+ this.execute_cell_then(index);
+ index = this.append_cell('print("c")');
+ this.execute_cell_then(index);
+
+ this.then(function () {
+ this.validate_state('initial state', 'edit', 0);
+ this.key_press('esc');
+ this.validate_state('esc', 'command', 0);
+ this.key_press('down');
+ this.validate_state('down', 'command', 1);
+ this.key_press('enter');
+ this.validate_state('enter', 'edit', 1);
+ this.key_press('j');
+ this.validate_state('j in edit mode', 'edit', 1);
+ this.key_press('esc');
+ this.validate_state('esc', 'command', 1);
+ this.key_press('j');
+ this.validate_state('j in command mode', 'command', 2);
+ this.click_cell(0);
+ this.validate_state('click cell 0', 'edit', 0);
+ this.click_cell(3);
+ this.validate_state('click cell 3', 'edit', 3);
+ this.key_press('esc');
+ this.validate_state('esc', 'command', 3);
+
+ // Open keyboard help
+ this.evaluate(function(){
+ $('#keyboard_shortcuts a').click();
+ }, {});
+
+ this.key_press('k');
+ this.validate_state('k in command mode while keyboard help is up', 'command', 3);
+
+ // Close keyboard help
+ this.evaluate(function(){
+ $('div.modal button.close').click();
+ }, {});
+
+ this.key_press('k');
+ this.validate_state('k in command mode', 'command', 2);
+ this.click_cell(0);
+ this.validate_state('click cell 0', 'edit', 0);
+ this.focus_notebook();
+ this.validate_state('focus #notebook', 'command', 0);
+ this.click_cell(0);
+ this.validate_state('click cell 0', 'edit', 0);
+ this.focus_notebook();
+ this.validate_state('focus #notebook', 'command', 0);
+ this.click_cell(3);
+ this.validate_state('click cell 3', 'edit', 3);
+ this.key_press('shift+enter');
+ this.validate_state('shift+enter (no cell below)', 'edit', 4);
+ this.click_cell(3);
+ this.validate_state('click cell 3', 'edit', 3);
+ this.key_press('shift+enter');
+ this.validate_state('shift+enter (cell exists below)', 'command', 4);
+ this.click_cell(3);
+ this.validate_state('click cell 3', 'edit', 3);
+ this.key_press('alt+enter');
+ this.validate_state('alt+enter', 'edit', 4);
+ this.key_press('ctrl+enter');
+ this.validate_state('ctrl+enter', 'command', 4);
+ });
+
+
+ // Utility functions.
+ this.validate_state = function(message, mode, cell_index) {
+ // General tests.
+ this.test.assertEquals(this._get_keyboard_mode(), this._get_notebook_mode(),
+ message + '; keyboard and notebook modes match');
+ // Is codemirror focused appropriately?
+ this.test.assert(this.is_editor_focus_valid(), message + '; cell editor focused appropriately');
+ // Is the selected cell the only cell that is selected?
+ if (cell_index!==undefined) {
+ this.test.assert(this.is_cell_selected(cell_index),
+ message + '; cell ' + cell_index + ' is the only cell selected');
+ }
+
+ // Mode specific tests.
+ if (mode==='command') {
+ // Are the notebook and keyboard manager in command mode?
+ this.test.assertEquals(this._get_keyboard_mode(), 'command',
+ message + '; in command mode');
+ // Make sure there isn't a single cell in edit mode.
+ this.test.assert(this.is_cell_edit(null),
+ message + '; all cells in command mode');
+
+ } else if (mode==='edit') {
+ // Are the notebook and keyboard manager in edit mode?
+ this.test.assertEquals(this._get_keyboard_mode(), 'edit',
+ message + '; in edit mode');
+ // Is the specified cell the only cell in edit mode?
+ if (cell_index!==undefined) {
+ this.test.assert(this.is_cell_edit(cell_index),
+ message + '; cell ' + cell_index + ' is the only cell in edit mode');
+ }
+
+ } else {
+ this.test.assert(false, message + '; ' + mode + ' is an unknown mode');
+ }
+ };
+
+ this.is_editor_focus_valid = function() {
+ var cells = this._get_cells();
+ for (var i = 0; i < cells.length; i++) {
+ if (!this.is_cell_editor_focus_valid(i)) {
+ return false;
+ }
+ }
+ return true;
+ };
+
+ this.is_cell_editor_focus_valid = function(i) {
+ var cell = this._get_cell(i);
+ if (cell) {
+ if (cell.mode == 'edit') {
+ return this._is_cell_editor_focused(i);
+ } else {
+ return !this._is_cell_editor_focused(i);
+ }
+ }
+ return true;
+ };
+
+ this.is_cell_selected = function(i) {
+ return this._is_cell_on(i, 'selected', 'unselected');
+ };
+
+ this.is_cell_edit = function(i) {
+ return this._is_cell_on(i, 'edit_mode', 'command_mode');
+ };
+
+ this.click_cell = function(index) {
+ // Code Mirror does not play nicely with emulated brower events.
+ // Instead of trying to emulate a click, here we run code similar to
+ // 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;
+ if (cm.options.readOnly != "nocursor" && (document.activeElement != cm.display.input))
+ cm.display.input.focus();
+ }, {i: index});
+ };
+
+ this.focus_notebook = function() {
+ this.evaluate(function (){
+ $('#notebook').focus();
+ }, {});
+ };
+
+ this.key_press = function(key) {
+ this.evaluate(function (k) {
+ IPython.keyboard.trigger_keydown(k);
+ }, {k: key});
+ };
+
+ this._is_cell_editor_focused = function(i) {
+ return this._is_cell_inputfield(i, '.CodeMirror-focused *');
+ };
+
+ this._is_cell_on = function(i, on_class, off_class) {
+ var cells = this._get_cells();
+ for (var j = 0; j < cells.length; j++) {
+ if (j === i) {
+ if (this._has_cell_class(j, off_class) || !this._has_cell_class(j, on_class)) {
+ return false;
+ }
+ } else {
+ if (!this._has_cell_class(j, off_class) || this._has_cell_class(j, on_class)) {
+ return false;
+ }
+ }
+ }
+ return true;
+ };
+
+ this._get_keyboard_mode = function() {
+ return this.evaluate(function() {
+ return IPython.keyboard_manager.mode;
+ }, {});
+ };
+
+ this._get_notebook_mode = function() {
+ return this.evaluate(function() {
+ return IPython.notebook.mode;
+ }, {});
+ };
+
+ this._get_cells = function() {
+ return this.evaluate(function() {
+ return IPython.notebook.get_cells();
+ }, {});
+ };
+
+ this._get_cell = function(index) {
+ return this.evaluate(function(i) {
+ var cell = IPython.notebook.get_cell(i);
+ if (cell) {
+ return cell;
+ }
+ return null;
+ }, {i : index});
+ };
+
+ this._is_cell_inputfield = function(index, selector) {
+ return this.evaluate(function(i, s) {
+ var cell = IPython.notebook.get_cell(i);
+ if (cell) {
+ return $(cell.code_mirror.getInputField()).is(s);
+ }
+ return false;
+ }, {i : index, s: selector});
+ };
+
+ this._has_cell_class = function(index, classes) {
+ return this.evaluate(function(i, c) {
+ var cell = IPython.notebook.get_cell(i);
+ if (cell) {
+ return cell.element.hasClass(c);
+ }
+ return false;
+ }, {i : index, c: classes});
+ };
+});