Page Assertions

page.assertTitle

Asserts that the page title satisfies the given constraint

page.assertUrl

Asserts that the page URL satisfies the given constraint

page.assertContent

Asserts that the page content (HTML) satisfies the given constraint

page.assertNodeCount

Asserts that number of elements matching a specified selector satisfies the given constraint

page.assertScroll

Asserts that window scroll offset satisfies the given constraint

page.assertVar

Asserts that variable associated with a given name satisfies the given constraint

page.assertScreenshot

Asserts that screenshot of the page matches already approved one

page.assertRest

Makes HTTP/S request and asserts that the response satisfies the given constraint.

The method automatically assigns the response text data to template variable PUPPETRY_LAST_RESPONSE_TEXT

page.assertResponse

Asserts that the HTTP/S response satisfies the given constraint

page.assertConsoleMessage

Asserts there were (no) console messages sent to console to satisfy the given constraint

page.assertDialog

Asserts there was called a dialog (alert, beforeunload, confirm or prompt).

page.assertPerformanceAssetWeight

Asserts that total weight of assets (JavaScript, CSS, images, media, fonts, XHR) on the page satisfies the given budget.

This assertion makes Puppetry to intercept HTTP requests. It compares the given limits to the encoded length of the requests. Note that the request length is considered 0 when request loaded from cache. So it makes sense to place this step next to the very first page.goto in the test suite.

page.assertPerformanceAssetCount

Asserts that total number of requested assets (JavaScript, CSS, images, media, fonts, XHR) on the page satisfies the given budget.

page.assertPerformanceTiming

Asserts a given resource timing under a provided budget

page.assertGaTracking

Asserts a given action was sent to Google Analytics with analytics.js or gtag.js. We also assert that sent payloads are valid according to the Google API

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Last updated 6 years ago