test: add E2E tests for workflow tab operations in topbar

Add Playwright tests covering core workflow tab behaviors:
- Default tab visible on load
- Creating new workflow adds tab
- Switching between tabs
- Closing a tab
- Right-click context menu

Add tab-specific locators to Topbar fixture.

browser_tests/fixtures/components/Topbar.ts

@@ -50,12 +50,26 @@ export class Topbar {
     return classes ? !classes.includes('invisible') : false
   }
 
+  get newWorkflowButton(): Locator {
+    return this.page.locator('.new-blank-workflow-button')
+  }
+
   getWorkflowTab(tabName: string): Locator {
     return this.page
       .locator(`.workflow-tabs .workflow-label:has-text("${tabName}")`)
       .locator('..')
   }
 
+  getTab(index: number): Locator {
+    return this.page.locator('.workflow-tabs .p-togglebutton').nth(index)
+  }
+
+  getActiveTab(): Locator {
+    return this.page.locator(
+      '.workflow-tabs .p-togglebutton.p-togglebutton-checked'
+    )
+  }
+
   async closeWorkflowTab(tabName: string) {
     const tab = this.getWorkflowTab(tabName)
     await tab.getByRole('button', { name: 'Close' }).click({ force: true })

browser_tests/tests/topbar/workflowTabs.spec.ts

@@ -0,0 +1,77 @@
+import { expect } from '@playwright/test'
+
+import { comfyPageFixture as test } from '../../fixtures/ComfyPage'
+
+test.describe('Workflow tabs', () => {
+  test.beforeEach(async ({ comfyPage }) => {
+    await comfyPage.settings.setSetting('Comfy.UseNewMenu', 'Top')
+    await comfyPage.settings.setSetting(
+      'Comfy.Workflow.WorkflowTabsPosition',
+      'Topbar'
+    )
+    await comfyPage.setup()
+  })
+
+  test('Default workflow tab is visible on load', async ({ comfyPage }) => {
+    const tabNames = await comfyPage.menu.topbar.getTabNames()
+    expect(tabNames.length).toBe(1)
+    expect(tabNames[0]).toContain('Unsaved Workflow')
+  })
+
+  test('Creating a new workflow adds a tab', async ({ comfyPage }) => {
+    const topbar = comfyPage.menu.topbar
+
+    expect(await topbar.getTabNames()).toHaveLength(1)
+
+    await topbar.newWorkflowButton.click()
+    await expect.poll(() => topbar.getTabNames()).toHaveLength(2)
+
+    const tabNames = await topbar.getTabNames()
+    expect(tabNames[1]).toContain('Unsaved Workflow (2)')
+  })
+
+  test('Switching tabs changes active workflow', async ({ comfyPage }) => {
+    const topbar = comfyPage.menu.topbar
+
+    await topbar.newWorkflowButton.click()
+    await expect.poll(() => topbar.getTabNames()).toHaveLength(2)
+
+    const activeNameBefore = await topbar.getActiveTabName()
+    expect(activeNameBefore).toContain('Unsaved Workflow (2)')
+
+    await topbar.getTab(0).click()
+    await expect
+      .poll(() => topbar.getActiveTabName())
+      .toContain('Unsaved Workflow')
+
+    const activeAfter = await topbar.getActiveTabName()
+    expect(activeAfter).not.toContain('(2)')
+  })
+
+  test('Closing a tab removes it', async ({ comfyPage }) => {
+    const topbar = comfyPage.menu.topbar
+
+    await topbar.newWorkflowButton.click()
+    await expect.poll(() => topbar.getTabNames()).toHaveLength(2)
+
+    await topbar.closeWorkflowTab('Unsaved Workflow (2)')
+    await expect.poll(() => topbar.getTabNames()).toHaveLength(1)
+
+    const remaining = await topbar.getTabNames()
+    expect(remaining[0]).toContain('Unsaved Workflow')
+  })
+
+  test('Right-clicking a tab shows context menu', async ({ comfyPage }) => {
+    const topbar = comfyPage.menu.topbar
+
+    await topbar.getTab(0).click({ button: 'right' })
+
+    const contextMenu = comfyPage.page.locator(
+      '[data-reka-context-menu-content]'
+    )
+    await expect(contextMenu).toBeVisible()
+
+    await expect(contextMenu).toContainText('Close Tab')
+    await expect(contextMenu).toContainText('Save')
+  })
+})