Fix tests to check GlAlert use in Design view

ee/app/assets/javascripts/design_management/pages/design/index.vue

@@ -21,7 +21,6 @@ import {
   DESIGN_NOT_EXIST_ERROR,
   designDeletionError,
 } from '../../utils/error_messages';
-import DESIGN_DETAIL_CONTAINER_CLASS from '../../utils/constants';
 
 export default {
   components: {
@@ -198,7 +197,6 @@ export default {
     next();
   },
   createImageDiffNoteMutation,
-  DESIGN_DETAIL_CONTAINER_CLASS,
 };
 </script>
 

ee/app/assets/javascripts/design_management/utils/constants.js

-const DESIGN_DETAIL_CONTAINER_CLASS = 'design-detail';
-
-export default DESIGN_DETAIL_CONTAINER_CLASS;

ee/spec/frontend/design_management/pages/design/__snapshots__/index_spec.js.snap

@@ -19,9 +19,20 @@ exports[`Design management design index page flash container is in correct posit
       <div
         class="p-3"
       >
-        <div
-          class="flash-container"
-        />
+        <glalert-stub
+          dismissible="true"
+          dismisslabel="Dismiss"
+          primarybuttonlink=""
+          primarybuttontext=""
+          secondarybuttonlink=""
+          secondarybuttontext=""
+          title=""
+          variant="danger"
+        >
+          
+            woops
+          
+        </glalert-stub>
       </div>
        
       <designimage-stub

ee/spec/frontend/design_management/pages/design/index_spec.js

@@ -188,23 +188,17 @@ describe('Design management design index page', () => {
             edges: [],
           },
         },
+        errorMessage: 'woops',
       });
     });
     it('container is in correct position in DOM', () => {
-      wrapper.vm.$nextTick(() => {
-        // tests that `design-detail` class exists on Component container,
-        // and that the '.flash-container' element exists and is placed correctly
       expect(wrapper.element).toMatchSnapshot();
-      });
-    });
-    it('creates flash on mutation error', () => {
-      utils.createDesignDetailFlash = jest.fn();
 
-      try {
-        wrapper.vm.onMutationError('test error');
-      } catch (e) {
-        expect(utils.createDesignDetailFlash).toHaveBeenCalled();
-      }
+      // wrapper.vm.$nextTick(() => {
+      //   // tests that `design-detail` class exists on Component container,
+      //   // and that the '.flash-container' element exists and is placed correctly
+      //   expect(wrapper.element).toMatchSnapshot();
+      // });
     });
   });
 });