Jasmine test for changedMetadata method.

cms/static/coffee/spec/views/module_edit_spec.coffee

@@ -72,3 +72,14 @@ describe "CMS.Views.ModuleEdit", ->
       it "loads the .xmodule-display inside the module editor", ->
         expect(XModule.loadModule).toHaveBeenCalled()
         expect(XModule.loadModule.mostRecentCall.args[0]).toBe($('.xmodule_display'))
+
+    describe "changedMetadata", ->
+      it "returns empty if no metadata loaded", ->
+        expect(@moduleEdit.changedMetadata()).toEqual({})
+
+      it "returns only changed values", ->
+        @moduleEdit.originalMetadata = {'foo', 'bar'}
+        spyOn(@moduleEdit, 'metadata').andReturn({'a': '', 'b': 'before', 'c': ''})
+        @moduleEdit.loadEdit()
+        @moduleEdit.metadata.andReturn({'a': '', 'b': 'after', 'd': 'only_after'})
+        expect(@moduleEdit.changedMetadata()).toEqual({'b' : 'after', 'd' : 'only_after'})

cms/templates/widgets/metadata-edit.html

@@ -22,8 +22,8 @@
               value='${field_value["field"].to_json(field_value["value"])}'
             % endif
             size='60' />
-        ## Change to False to see all the information being passed through.
-        % if True:
+        ## Change to True to see all the information being passed through.
+        % if False:
             <label>Help: ${field_value['field'].help}</label>
             <label>Type: ${type(field_value['field']).__name__}</label>
             <label>Inherited: ${field_value['is_inherited']}</label>