remove code to fetch root page

packages/app/src/server/service/page.ts

@@ -314,7 +314,7 @@ class PageService {
   async renamePage(page, newPagePath, user, options) {
     const Page = this.crowi.model('Page');
 
-    const isExist = await Page.count({ path: newPagePath }) > 0;
+    const isExist = await Page.exists({ path: newPagePath });
     if (isExist) {
       // if page found, cannot rename to that path
       throw new Error('the path already exists');

packages/app/test/integration/service/page-grant.test.js

@@ -110,15 +110,6 @@ describe('PageGrantService', () => {
 
     // Root page (Depth: 0)
     rootPage = await Page.findOne({ path: '/' });
-    if (rootPage == null) {
-      const pages = await Page.insertMany([
-        {
-          path: '/',
-          grant: Page.GRANT_PUBLIC,
-        },
-      ]);
-      rootPage = pages[0];
-    }
 
 
     // Empty pages (Depth: 1)

packages/app/test/integration/service/v5.migration.test.js

@@ -28,7 +28,7 @@ describe('V5 page migration', () => {
       jest.restoreAllMocks();
 
       // initialize pages for test
-      let pages = await Page.insertMany([
+      const pages = await Page.insertMany([
         {
           path: '/private1',
           grant: Page.GRANT_OWNER,
@@ -59,11 +59,6 @@ describe('V5 page migration', () => {
         },
       ]);
 
-      if (!await Page.exists({ path: '/' })) {
-        const additionalPages = await Page.insertMany([{ path: '/', grant: Page.GRANT_PUBLIC }]);
-        pages = [...additionalPages, ...pages];
-      }
-
       const pageIds = pages.map(page => page._id);
       // migrate
       await crowi.pageService.normalizeParentRecursivelyByPageIds(pageIds, testUser1);