fix(files): Correctly check for already used names when creating new folder

Also add Cypress tests for the "new"-menu.

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

apps/files/src/views/FilesList.vue

@@ -243,7 +243,7 @@ export default defineComponent({
 				// as the path is allowed to be undefined we need to normalize the path ('//' to '/')
 				const normalizedPath = normalize(`${this.currentFolder?.path ?? ''}/${path ?? ''}`)
 				// Try cache first
-				const nodes = this.filesStore.getNodesByPath(view.id, path)
+				const nodes = this.filesStore.getNodesByPath(view.id, normalizedPath)
 				if (nodes.length > 0) {
 					return nodes
 				}

cypress/e2e/files/FilesUtils.ts

@@ -136,3 +136,19 @@ export const createFolder = (folderName: string) => {
 
 	getRowForFile(folderName).should('be.visible')
 }
+
+/**
+ * Check validity of an input element
+ * @param validity The expected validity message (empty string means it is valid)
+ * @example
+ * ```js
+ * cy.findByRole('textbox')
+ *     .should(haveValidity(/must not be empty/i))
+ * ```
+ */
+export const haveValidity = (validity: string | RegExp) => {
+	if (typeof validity === 'string') {
+		return (el: JQuery<HTMLElement>) => expect((el.get(0) as HTMLInputElement).validationMessage).to.equal(validity)
+	}
+	return (el: JQuery<HTMLElement>) => expect((el.get(0) as HTMLInputElement).validationMessage).to.match(validity)
+}

cypress/e2e/files/files-renaming.cy.ts

@@ -4,14 +4,7 @@
  */
 
 import type { User } from '@nextcloud/cypress'
-import { getRowForFile, triggerActionForFile } from './FilesUtils'
-
-const haveValidity = (validity: string | RegExp) => {
-	if (typeof validity === 'string') {
-		return (el: JQuery<HTMLElement>) => expect((el.get(0) as HTMLInputElement).validationMessage).to.equal(validity)
-	}
-	return (el: JQuery<HTMLElement>) => expect((el.get(0) as HTMLInputElement).validationMessage).to.match(validity)
-}
+import { getRowForFile, haveValidity, triggerActionForFile } from './FilesUtils'
 
 describe('files: Rename nodes', { testIsolation: true }, () => {
 	let user: User

cypress/e2e/files/new-menu.cy.ts

@@ -0,0 +1,123 @@
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { createFolder, getRowForFile, haveValidity, navigateToFolder } from './FilesUtils'
+
+describe('"New"-menu', { testIsolation: true }, () => {
+
+	beforeEach(() => {
+		cy.createRandomUser().then(($user) => {
+			cy.login($user)
+			cy.visit('/apps/files')
+		})
+	})
+
+	it('Create new folder', () => {
+		// Click the "new" button
+		cy.get('[data-cy-upload-picker]')
+			.findByRole('button', { name: 'New' })
+			.should('be.visible')
+			.click()
+		// Click the "new folder" menu entry
+		cy.findByRole('menuitem', { name: 'New folder' })
+			.should('be.visible')
+			.click()
+		// Create a folder
+		cy.intercept('MKCOL', '**/remote.php/dav/files/**').as('mkdir')
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('textbox', { name: 'Folder name' })
+			.type('A new folder{enter}')
+		cy.wait('@mkdir')
+		// See the folder is visible
+		getRowForFile('A new folder')
+			.should('be.visible')
+	})
+
+	it('Does not allow creating forbidden folder names', () => {
+		// Click the "new" button
+		cy.get('[data-cy-upload-picker]')
+			.findByRole('button', { name: 'New' })
+			.should('be.visible')
+			.click()
+		// Click the "new folder" menu entry
+		cy.findByRole('menuitem', { name: 'New folder' })
+			.should('be.visible')
+			.click()
+		// enter folder name
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('textbox', { name: 'Folder name' })
+			.type('.htaccess')
+		// See that input has invalid state set
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('textbox', { name: 'Folder name' })
+			.should(haveValidity(/reserved name/i))
+		// See that it can not create
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('button', { name: 'Create' })
+			.should('be.disabled')
+	})
+
+	it('Does not allow creating folders with already existing names', () => {
+		createFolder('already exists')
+		// Click the "new" button
+		cy.get('[data-cy-upload-picker]')
+			.findByRole('button', { name: 'New' })
+			.should('be.visible')
+			.click()
+		// Click the "new folder" menu entry
+		cy.findByRole('menuitem', { name: 'New folder' })
+			.should('be.visible')
+			.click()
+		// enter folder name
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('textbox', { name: 'Folder name' })
+			.type('already exists')
+		// See that input has invalid state set
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('textbox', { name: 'Folder name' })
+			.should(haveValidity(/already in use/i))
+		// See that it can not create
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('button', { name: 'Create' })
+			.should('be.disabled')
+	})
+
+	/**
+	 * Regression test of https://github.com/nextcloud/server/issues/47530
+	 */
+	it('Create same folder in child folder', () => {
+		// setup other folders
+		createFolder('folder')
+		createFolder('other folder')
+		navigateToFolder('folder')
+
+		// Click the "new" button
+		cy.get('[data-cy-upload-picker]')
+			.findByRole('button', { name: 'New' })
+			.should('be.visible')
+			.click()
+		// Click the "new folder" menu entry
+		cy.findByRole('menuitem', { name: 'New folder' })
+			.should('be.visible')
+			.click()
+		// enter folder name
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('textbox', { name: 'Folder name' })
+			.type('other folder')
+		// See that creating is allowed
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('textbox', { name: 'Folder name' })
+			.should(haveValidity(''))
+		// can create
+		cy.intercept('MKCOL', '**/remote.php/dav/files/**').as('mkdir')
+		cy.findByRole('dialog', { name: /create new folder/i })
+			.findByRole('button', { name: 'Create' })
+			.click()
+		cy.wait('@mkdir')
+		// see it is created
+		getRowForFile('other folder')
+			.should('be.visible')
+	})
+})