#assert.matches([selector], match)

• selector - optional selector to scope the assertion to a nested element
• match - selector string to match against

The matches() assertion mirrors the corresponding helper method and asserts that an element matches some selector.

// with a scoped selector
await new Interactor('.signup-form')
  .assert.matches('.submit', '.primary')

// without a scoped selector
await new Interactor('.page')
  .assert.matches('.home-page')