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Playwright · Matcher

toContainClass

Playwright assertions check values and web conditions. Web-specific assertions retry until the condition passes or the 5-second assertion timeout is reached.

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Syntax

expect(value).matcher(expected)

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  • expect.poll
  • expect.toPass
  • toBeVisible
  • toHaveText
  • toHaveURL
  • testConfig.expect

Source: Assertions | Playwright. Checked 2026-11-03.