behave

Matchers

The matchers assert on WWW::Playwright Locator and Page objects. Apply them method-style on an expectation:

expect(.page.locator('#greeting')).to.be-visible;
expect(.page.locator('#name')).to.have-value('Ada');

Every matcher negates with .not:

expect(.page.locator('#status')).not.to.be-visible;

Auto-waiting#

Matchers poll until the condition holds or a timeout elapses, so an element that renders shortly after an action still passes:

.page.locator('#go-async').click;
expect(.page.locator('#async-status')).to.be-visible;

The default timeout is 4 seconds. Override it per assertion with timeout (seconds), which is useful to fail fast in negative cases:

expect(.page.locator('#status')).not.to.be-visible(timeout => 0.3);

Presence and state#

These operate on a Locator.

  • be-visible — the element is visible.
  • be-hidden — the element is present but not visible.
  • be-enabled — the element is enabled.
  • be-disabled — the element is disabled.
  • be-checked — the checkbox or radio is checked.
expect(.page.locator('#greeting')).to.be-visible;
expect(.page.locator('#locked')).to.be-disabled;
expect(.page.locator('#agree')).to.be-checked;

Content#

These operate on a Locator.

  • have-text($expected) — the element's text contains $expected (a string substring, or a Regex to match).
  • have-value($expected) — the form control's value equals $expected (a string), or matches a Regex.
  • have-attribute($name) — the attribute is present.
  • have-attribute($name, $expected) — the attribute equals $expected, or matches a Regex.
  • have-count($n) — the locator resolves to exactly $n elements.
expect(.page.locator('#greeting')).to.have-text('Hello, world');
expect(.page.locator('#name')).to.have-value('Ada');
expect(.page.locator('#name')).to.have-attribute('type', 'text');
expect(.page.locator('button')).to.have-count(2);

Selector existence#

have-css operates on a Page or a scoping Locator. It asserts the subject contains nodes matching a CSS selector, mirroring Capybara's have_css.

  • have-css($selector) — at least one match.
  • have-css($selector, count => $n) — exactly $n matches.
  • have-css($selector, minimum => $n) — at least $n matches.
  • have-css($selector, maximum => $n) — at most $n matches.
  • have-css($selector, text => $string) — restrict to nodes containing $string.
expect(.page).to.have-css('#greeting');
expect(.page).to.have-css('button', count => 2);
expect(.page).to.have-css('li', minimum => 3);

Page-level#

These operate on a Page.

  • have-title($expected) — the document title contains $expected (a string substring, or a Regex to match).
  • have-current-path($expected) — the path of the current URL equals $expected (a string), or matches a Regex.
  • have-current-path($expected, url => True) — match against the full URL rather than just the path.
expect(.page).to.have-title('Hello');
expect(.page).to.have-current-path('/app/users');
expect(.page).to.have-current-path(rx/'/users/' \d+/);
expect(.page).to.have-current-path('https://example.test/users', url => True);