Page Assertions

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Page Assertions

page.assertTitle
Asserts that the page title satisfies the given constraint
page.assertTitle
page.assertUrl
Asserts that the page URL satisfies the given constraint
page.assertUrl
page.assertContent
Asserts that the page content (HTML) satisfies the given constraint
page.assertContent
page.assertNodeCount
Asserts that number of elements matching a specified selector satisfies the given constraint
page.assertNodeCount
page.assertScroll
Asserts that window scroll offset satisfies the given constraint
page.assertScroll
page.assertVar
Asserts that variable associated with a given name satisfies the given constraint
page.assertVar
page.assertScreenshot
Asserts that screenshot of the page matches already approved one
page.assertScreenshot
page.assertScreenshot advanced options
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.assertRest
page.assertResponse
Asserts that the HTTP/S response satisfies the given constraint
page.assertResponse
page.assertConsoleMessage
Asserts there were (no) console messages sent to console to satisfy the given constraint
page.assertConsoleMessage
page.assertDialog
Asserts there was called a dialog (alert, beforeunload, confirm or prompt).
page.assertDialog
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.assertPerformanceAssetWeight
page.assertPerformanceAssetCount
Asserts that total number of requested assets (JavaScript, CSS, images, media, fonts, XHR) on the page satisfies the given budget.
page.assertPerformanceAssetCount
page.assertPerformanceTiming
Asserts a given resource timing under a provided budget
page.assertPerformanceTiming
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
page.assertGaTracking
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