Writing Browser Tests in Vitest
From the Vitest cheat sheet · Browser Mode · verified Nov 2026
Writing Browser Tests
Render components, query with locators, interact, and assert with expect.element
typescript
import { expect, test } from 'vitest'
import { page } from 'vitest/browser'
import { render } from 'vitest-browser-react'
test('increments', async () => {
const screen = await render(<Counter />)
await screen.getByRole('button', { name: 'Increment' }).click()
await expect.element(screen.getByText('Count is 1')).toBeVisible()
})📌 Always await expect.element; it polls until the element matches
⚠️ v5 locators match text exactly; pass { exact: false } for partial
💡 userEvent triggers real browser events, not simulated ones
🎭 Need full E2E across pages and tabs? See the Playwright sheet
browser-modelocatorscomponent-testingreact
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