feat: add export course tags menu (#830)

This change adds an item in the Tools menu to export the course tags to a CSV file.

src/header/utils.test.js

@@ -1,11 +1,11 @@
 import { getConfig, setConfig } from '@edx/frontend-platform';
-import { getContentMenuItems } from './utils';
+import { getContentMenuItems, getToolsMenuItems } from './utils';
 
 const props = {
   studioBaseUrl: 'UrLSTuiO',
   courseId: '123',
   intl: {
-    formatMessage: jest.fn(),
+    formatMessage: jest.fn(message => message.defaultMessage),
   },
 };
 
@@ -28,4 +28,32 @@ describe('header utils', () => {
       expect(actualItems).toHaveLength(4);
     });
   });
+
+  describe('getToolsMenuItems', () => {
+    it('should include export tags option', () => {
+      setConfig({
+        ...getConfig(),
+        ENABLE_TAGGING_TAXONOMY_PAGES: 'true',
+      });
+      const actualItemsTitle = getToolsMenuItems(props).map((item) => item.title);
+      expect(actualItemsTitle).toEqual([
+        'Import',
+        'Export Course',
+        'Export Tags',
+        'Checklists',
+      ]);
+    });
+    it('should not include export tags option', () => {
+      setConfig({
+        ...getConfig(),
+        ENABLE_TAGGING_TAXONOMY_PAGES: 'false',
+      });
+      const actualItemsTitle = getToolsMenuItems(props).map((item) => item.title);
+      expect(actualItemsTitle).toEqual([
+        'Import',
+        'Export Course',
+        'Checklists',
+      ]);
+    });
+  });
 });