diff --git a/IPython/html/tests/casperjs/test_cases/wigets_container.js b/IPython/html/tests/casperjs/test_cases/wigets_container.js
new file mode 100644
index 0000000..018a166
--- /dev/null
+++ b/IPython/html/tests/casperjs/test_cases/wigets_container.js
@@ -0,0 +1,80 @@
+// Test container class
+casper.notebook_test(function () {
+    index = this.append_cell(
+        'from IPython.html import widgets\n' + 
+        'from IPython.display import display, clear_output\n' +
+        'print("Success")');
+    this.execute_cell_then(index);
+
+    var container_index = this.append_cell(
+        'container = widgets.ContainerWidget()\n' +
+        'button = widgets.ButtonWidget()\n'+
+        'container.children = [button]\n'+
+        'display(container)\n'+
+        'container.add_class("my-test-class")\n'+
+        'print("Success")\n');
+    this.execute_cell_then(container_index, function(index){
+
+        this.test.assert(this.get_output_cell(index).text == 'Success\n', 
+            'Create container cell executed with correct output.');
+
+        this.test.assert(this.cell_element_exists(index, 
+            '.widget-area .widget-subarea'),
+            'Widget subarea exists.');
+
+        this.test.assert(this.cell_element_exists(index, 
+            '.widget-area .widget-subarea .widget-container'),
+            'Widget container exists.');
+
+        this.test.assert(this.cell_element_exists(index, 
+            '.widget-area .widget-subarea .my-test-class'),
+            'add_class works.');
+
+        this.test.assert(this.cell_element_exists(index, 
+            '.widget-area .widget-subarea .my-test-class button'),
+            'Container parent/child relationship works.');
+    });
+
+    index = this.append_cell(
+        'container.set_css("float", "right")\n'+
+        'print("Success")\n');
+    this.execute_cell_then(index, function(index){
+
+        this.test.assert(this.get_output_cell(index).text == 'Success\n', 
+            'Set container class CSS cell executed with correct output.');
+        
+        this.test.assert(this.cell_element_function(container_index, 
+            '.widget-area .widget-subarea .my-test-class', 'css', ['float'])=='right',
+            'set_css works.');
+    });
+
+    index = this.append_cell(
+        'container.remove_class("my-test-class")\n'+
+        'print("Success")\n');
+    this.execute_cell_then(index, function(index){
+
+        this.test.assert(this.get_output_cell(index).text == 'Success\n', 
+            'Remove container class cell executed with correct output.');
+
+        this.test.assert(! this.cell_element_exists(container_index, 
+            '.widget-area .widget-subarea .my-test-class'),
+            'remove_class works.');
+    });
+
+    index = this.append_cell(
+        'display(button)\n'+
+        'print("Success")\n');
+    this.execute_cell_then(index, function(index){
+
+        this.test.assert(this.get_output_cell(index).text == 'Success\n', 
+            'Display container child executed with correct output.');
+
+        this.test.assert(! this.cell_element_exists(index, 
+            '.widget-area .widget-subarea .widget-container'),
+            'Parent container not displayed.');
+
+        this.test.assert(this.cell_element_exists(index, 
+            '.widget-area .widget-subarea button'),
+            'Child displayed.');
+    });
+});
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