Fix Editor tests

src/block_manager/index.js

@@ -262,7 +262,7 @@ export default () => {
       blocks.stopListening();
       blocksVisible.reset();
       categories.reset();
-      blocksView.remove();
+      blocksView && blocksView.remove();
       [blocks, blocksVisible, categories, blocksView].forEach(i => (i = null));
       c = {};
     }

test/specs/editor/index.js

@@ -3,10 +3,11 @@ import Editor from 'editor';
 const { keys } = Object;
 const initComps = 1;
 
-describe('Editor', () => {
-  const editor = new Editor();
+describe.only('Editor', () => {
+  let editor;
 
   beforeEach(() => {
+    editor = new Editor();
     editor.init();
   });