test(e2e): add dataset creation e2e test

e2e/features/datasets/create-dataset.feature

@@ -0,0 +1,10 @@
+@datasets @authenticated @core
+Feature: Create dataset
+  Scenario: Create a new empty dataset
+    Given I am signed in as the default E2E admin
+    When I open the datasets page
+    And I start creating a new dataset
+    And I select "Create an empty dataset"
+    And I enter a unique E2E dataset name
+    And I confirm dataset creation
+    Then I should land on the dataset document page

e2e/features/step-definitions/datasets/create-dataset.steps.ts

@@ -0,0 +1,36 @@
+import type { DifyWorld } from '../../support/world'
+import { Then, When } from '@cucumber/cucumber'
+import { expect } from '@playwright/test'
+
+When('I open the datasets page', async function (this: DifyWorld) {
+  await this.getPage().goto('/datasets')
+})
+
+When('I start creating a new dataset', async function (this: DifyWorld) {
+  const page = this.getPage()
+  await expect(page.getByRole('button', { name: 'Create Dataset' })).toBeVisible()
+  await page.getByRole('button', { name: 'Create Dataset' }).click()
+})
+
+When('I select {string}', async function (this: DifyWorld, option: string) {
+  const page = this.getPage()
+  await expect(page.getByText(option)).toBeVisible()
+  await page.getByText(option).click()
+})
+
+When('I enter a unique E2E dataset name', async function (this: DifyWorld) {
+  const datasetName = `E2E Dataset ${Date.now()}`
+  this.lastCreatedDatasetName = datasetName
+  await this.getPage().getByPlaceholder('Dataset name').fill(datasetName)
+})
+
+When('I confirm dataset creation', async function (this: DifyWorld) {
+  const page = this.getPage()
+  const createButton = page.getByRole('button', { name: 'Create' }).last()
+  await expect(createButton).toBeEnabled()
+  await createButton.click()
+})
+
+Then('I should land on the dataset document page', async function (this: DifyWorld) {
+  await expect(this.getPage()).toHaveURL(/\/datasets\/[^/]+\/documents(?:\?.*)?$/)
+})

e2e/features/support/world.ts

@@ -13,6 +13,7 @@ export class DifyWorld extends World {
   scenarioStartedAt: number | undefined
   session: AuthSessionMetadata | undefined
   lastCreatedAppName: string | undefined
+  lastCreatedDatasetName: string | undefined
   createdAppIds: string[] = []
   capturedDownloads: Download[] = []
   shareURL: string | undefined
@@ -26,6 +27,7 @@ export class DifyWorld extends World {
     this.consoleErrors = []
     this.pageErrors = []
     this.lastCreatedAppName = undefined
+    this.lastCreatedDatasetName = undefined
     this.createdAppIds = []
     this.capturedDownloads = []
     this.shareURL = undefined