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.
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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