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React Testing Library · Matcher

toContainElement

render mounts a React element for a test and returns queries plus helpers for inspecting, updating, and removing the rendered output. It is the main entry point for testing React components with React Testing Library.

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Syntax

function render(ui: React.ReactElement<any>, options?: { /* render options */ }): RenderResult

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • render
  • RenderResult
  • cleanup
  • act
  • renderHook
  • configure
  • within
  • getBy

Source: API | Testing Library. Checked 2026-11-03.