test: verify imported projects through the virtualized sidebar (#19003)

tests/e2e/helpers/sidebar-project-visibility.ts

@@ -0,0 +1,27 @@
+import { expect, type Page } from '@stablyai/playwright-test'
+
+export async function expectSidebarProjectVisible(page: Page, projectName: string): Promise<void> {
+  const sidebar = page.getByRole('listbox', { name: 'Worktrees', exact: true })
+  const label = sidebar.getByText(projectName, { exact: false }).first()
+  await sidebar.evaluate((element) => {
+    element.scrollTop = 0
+    element.dispatchEvent(new Event('scroll', { bubbles: true }))
+  })
+  await expect
+    .poll(
+      async () => {
+        if (await label.isVisible()) {
+          return true
+        }
+        // Virtualized project headers mount only as their scroll range enters the viewport.
+        await sidebar.evaluate((element) => {
+          element.scrollTop += Math.max(1, Math.floor(element.clientHeight * 0.8))
+          element.dispatchEvent(new Event('scroll', { bubbles: true }))
+        })
+        return false
+      },
+      { message: `sidebar never rendered project ${projectName}`, intervals: [100] }
+    )
+    .toBe(true)
+  await expect(label).toBeVisible()
+}

tests/e2e/pr11346-selected-runtime-add.spec.ts

@@ -1,3 +1,4 @@
+import { expectSidebarProjectVisible } from './helpers/sidebar-project-visibility'
 import { openSidebarProjectDialog } from './helpers/sidebar-project-dialog'
 import { rmSync } from 'node:fs'
 import path from 'node:path'
@@ -727,7 +728,7 @@ async function runSelectedRuntimeAddJourney(
       ...fixture.nestedRepoPaths.map((repoPath) => path.basename(repoPath))
     ]) {
       // Why: duplicate checkout names are disambiguated with a parent path.
-      await expect(client.page.getByText(projectName, { exact: false }).first()).toBeVisible()
+      await expectSidebarProjectVisible(client.page, projectName)
     }
     expect(await client.getDirectSshAttemptTargetIds()).toEqual([])
     // Why: revealing the client must not leak into the HUB's window visibility.