IPython/html/tests/notebook/arrow_keys.js

//
// Check for errors with up and down arrow presses in a non-empty notebook.
//
casper.notebook_test(function () {
    this.then(function(){
        var result = this.evaluate(function() {
            IPython.notebook.command_mode();
            pos0 = IPython.notebook.get_selected_index();
            IPython.keyboard.trigger_keydown('b');
            pos1 = IPython.notebook.get_selected_index();
            IPython.keyboard.trigger_keydown('b');
            pos2 = IPython.notebook.get_selected_index();
            // Simulate the "up arrow" and "down arrow" keys.
            IPython.keyboard.trigger_keydown('up');
            pos3 = IPython.notebook.get_selected_index();
            IPython.keyboard.trigger_keydown('down');
            pos4 = IPython.notebook.get_selected_index();
            return [pos0, pos1, pos2, pos3, pos4];
        });
        this.test.assertEquals(result, [0, 1, 2, 1, 2], 'Up/down arrow okay in non-empty notebook.');
    });
    
});