# Page Assertions ## page.assertTitle Asserts that the page title satisfies the given constraint ![page.assertTitle](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCFtNdmvUDiYHFk0K_%2Fpage.assertTitle2.png?alt=media\&token=1c438d0c-e4d5-4abb-ab24-9bc20d03fe05) ## page.assertUrl Asserts that the page URL satisfies the given constraint ![page.assertUrl](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCG4D2Kkh4HXQg3cB3%2Fpage.assertUrl.png?alt=media\&token=32e48d14-f797-45cf-a2ce-83f056106f65) ## page.assertContent Asserts that the page content (HTML) satisfies the given constraint ![page.assertContent](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCGJVPz09_bWaxV_0w%2Fpage.assertHtml.png?alt=media\&token=5576025a-d4be-4cd7-84da-fc657c07d115) ## page.assertNodeCount Asserts that number of elements matching a specified selector satisfies the given constraint ![page.assertNodeCount](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCGPvcuiOAwZA-KGaA%2Fpage.assertNodeCount.png?alt=media\&token=f86af550-0ee1-43ba-8bba-776100d6c180) ## page.assertScroll Asserts that [window scroll](https://developer.mozilla.org/en-US/docs/Web/API/Window/scroll) offset satisfies the given constraint ![page.assertScroll](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCGWA_6Tx69qhsPqSJ%2Fpage.assertScroll.png?alt=media\&token=307fded3-5214-4241-b3dc-59c1383a6a94) ## page.assertVar Asserts that variable associated with a given name satisfies the given constraint ![page.assertVar](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCGbs_2K67E-98Xg2p%2Fpage.assertVar.png?alt=media\&token=df663d0f-d131-4a92-a15b-ec3c754ffbc7) ## page.assertScreenshot Asserts that screenshot of the page matches already approved one ![page.assertScreenshot](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCGt6z3UxgnFatvuLB%2Fpage.assertScreenshot.png?alt=media\&token=b028f53e-fb8b-46ba-8b3b-b0a6be6e6583) ![page.assertScreenshot advanced options](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCGvrK-P5zqr83LyOj%2Fpage.assertScreenshot2.png?alt=media\&token=6aa99e02-08dd-4b89-b54a-6bf9eedab2e6) ## page.assertRest Makes HTTP/S request and asserts that the response satisfies the given constraint. {% hint style="info" %} The method automatically assigns the response text data to template variable `PUPPETRY_LAST_RESPONSE_TEXT` {% endhint %} ![ page.assertRest](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LvtyPvPEEJOsAH6v9kO%2F-LvtymRgPCHMhNKYpowt%2Fassert-rest-post.png?alt=media\&token=593e8904-66f8-4d3d-bf61-a5a579d8e822) ## page.assertResponse Asserts that the HTTP/S response satisfies the given constraint ![page.assertResponse](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LvtyPvPEEJOsAH6v9kO%2F-LvtyxdlScBTGR6_N61I%2Fassert-response.png?alt=media\&token=37ef58a6-58de-4e69-aa09-f95d10337329) ## page.assertConsoleMessage Asserts there were (no) console messages sent to console to satisfy the given constraint ![page.assertConsoleMessage](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCJn0lBCWku-S0XY-_%2F-LuCU7aLM7uB1v8mc--f%2Fpage.assertConsoleMessage.png?alt=media\&token=28e030cf-16e6-4f17-bdab-e02fa4d0f69d) ## page.assertDialog Asserts there was called a dialog (alert, beforeunload, confirm or prompt). ![page.assertDialog](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCJn0lBCWku-S0XY-_%2F-LuCUBG7j6IBYHuLlS2n%2Fpage.assertDialog.png?alt=media\&token=73bf4d8e-027b-4b01-8170-0385f8e37a72) ## 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](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCHsENqomQr7BK4e0N%2Fpage.assertPerformanceWeight.png?alt=media\&token=89e6e1e2-fa92-4d8d-ba85-4dccc12a3897) ## page.assertPerformanceAssetCount Asserts that total number of requested assets (JavaScript, CSS, images, media, fonts, XHR) on the page satisfies the given budget. ![page.assertPerformanceAssetCount](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCI9wLypFFWlj1OgZC%2Fpage.assertPerformanceCount.png?alt=media\&token=430f3a64-967e-487d-b066-09ca314c3a4f) ## page.assertPerformanceTiming Asserts a given [resource timing](https://w3c.github.io/perf-timing-primer/#resource-timing) under a provided budget ![page.assertPerformanceTiming](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCIOaTiazTrGcMbedz%2Fpage.assertPerformaceTiming.png?alt=media\&token=e3f8855f-098e-4f98-aea0-904f8783b258) ## page.assertGaTracking Asserts a given action was sent to Google Analytics with [analytics.js](https://developers.google.com/analytics/devguides/collection/analyticsjs) or [gtag.js](https://developers.google.com/analytics/devguides/collection/gtagjs). We also assert that sent payloads are valid according to the Google API ![page.assertGaTracking](https://3461068122-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdyKJ-zzeS2hB7DF04J%2F-LuCFgUq_YnWyw_Isc2v%2F-LuCI_wv4zJat1WOhk8R%2Fpage.assertGaTracking.png?alt=media\&token=835a0306-4152-4d97-a9b1-c74f77b278c0)