Get rid of page.emulate() / page.emulatedDevices() methods
This patch: - gets rid of `page.emulate` and `page.emulatedDevices` methods. Instead, it is suggested to use `page.setViewport()` and `page.setUserAgent()` methods. - moves DeviceDescriptors to the top level of the puppeteer so that it is convenient to require them. - improves on documentation to describe the suggested emulation approach. References #88.
This commit is contained in:
Andrey Lushnikov
parent
76ac3bded5
commit
139b9e9b6d
289
docs/api.md
289
docs/api.md
@ -4,124 +4,166 @@
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<!-- toc -->
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- [class: Browser](#class-browser)
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* [new Browser([options])](#new-browseroptions)
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* [browser.close()](#browserclose)
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* [browser.closePage(page)](#browserclosepagepage)
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* [browser.newPage()](#browsernewpage)
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* [browser.stderr](#browserstderr)
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* [browser.stdout](#browserstdout)
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* [browser.version()](#browserversion)
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- [class: Page](#class-page)
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* [event: 'console'](#event-console)
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* [event: 'dialog'](#event-dialog)
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* [event: 'frameattached'](#event-frameattached)
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* [event: 'framedetached'](#event-framedetached)
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* [event: 'framenavigated'](#event-framenavigated)
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* [event: 'load'](#event-load)
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* [event: 'pageerror'](#event-pageerror)
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* [event: 'request'](#event-request)
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* [event: 'requestfailed'](#event-requestfailed)
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* [event: 'requestfinished'](#event-requestfinished)
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* [event: 'response'](#event-response)
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* [page.$(selector, pageFunction, ...args)](#pageselector-pagefunction-args)
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* [page.$$(selector, pageFunction, ...args)](#pageselector-pagefunction-args)
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* [page.addScriptTag(url)](#pageaddscripttagurl)
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* [page.click(selector)](#pageclickselector)
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* [page.close()](#pageclose)
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* [page.emulate(name)](#pageemulatename)
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* [page.emulatedDevices()](#pageemulateddevices)
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* [page.evaluate(pageFunction, ...args)](#pageevaluatepagefunction-args)
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* [page.evaluateOnInitialized(pageFunction, ...args)](#pageevaluateoninitializedpagefunction-args)
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* [page.focus(selector)](#pagefocusselector)
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* [page.frames()](#pageframes)
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* [page.goBack(options)](#pagegobackoptions)
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* [page.goForward(options)](#pagegoforwardoptions)
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* [page.httpHeaders()](#pagehttpheaders)
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* [page.injectFile(filePath)](#pageinjectfilefilepath)
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* [page.keyboard](#pagekeyboard)
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* [page.mainFrame()](#pagemainframe)
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* [page.navigate(url, options)](#pagenavigateurl-options)
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* [page.pdf(options)](#pagepdfoptions)
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* [page.plainText()](#pageplaintext)
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* [page.press(key[, options])](#pagepresskey-options)
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* [page.reload(options)](#pagereloadoptions)
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* [page.screenshot([options])](#pagescreenshotoptions)
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* [page.setContent(html)](#pagesetcontenthtml)
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* [page.setHTTPHeaders(headers)](#pagesethttpheadersheaders)
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* [page.setInPageCallback(name, callback)](#pagesetinpagecallbackname-callback)
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* [page.setRequestInterceptor(interceptor)](#pagesetrequestinterceptorinterceptor)
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* [page.setUserAgent(userAgent)](#pagesetuseragentuseragent)
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* [page.setViewport(viewport)](#pagesetviewportviewport)
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* [page.title()](#pagetitle)
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* [page.type(text)](#pagetypetext)
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* [page.uploadFile(selector, ...filePaths)](#pageuploadfileselector-filepaths)
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* [page.url()](#pageurl)
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* [page.userAgent()](#pageuseragent)
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* [page.viewport()](#pageviewport)
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* [page.waitFor(selector)](#pagewaitforselector)
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* [page.waitForNavigation(options)](#pagewaitfornavigationoptions)
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- [class: Keyboard](#class-keyboard)
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* [keyboard.down(key[, options])](#keyboarddownkey-options)
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* [keyboard.modifiers()](#keyboardmodifiers)
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* [keyboard.press(key[, options])](#keyboardpresskey-options)
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* [keyboard.sendCharacter(char)](#keyboardsendcharacterchar)
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* [keyboard.type(text)](#keyboardtypetext)
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* [keyboard.up(key)](#keyboardupkey)
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- [class: Dialog](#class-dialog)
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* [dialog.accept([promptText])](#dialogacceptprompttext)
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* [dialog.dismiss()](#dialogdismiss)
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* [dialog.message()](#dialogmessage)
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* [dialog.type](#dialogtype)
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- [class: Frame](#class-frame)
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* [frame.$(selector, pageFunction, ...args)](#frameselector-pagefunction-args)
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* [frame.$$(selector, pageFunction, ...args)](#frameselector-pagefunction-args)
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* [frame.childFrames()](#framechildframes)
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* [frame.evaluate(pageFunction, ...args)](#frameevaluatepagefunction-args)
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* [frame.isDetached()](#frameisdetached)
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* [frame.isMainFrame()](#frameismainframe)
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* [frame.name()](#framename)
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* [frame.parentFrame()](#frameparentframe)
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* [frame.url()](#frameurl)
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* [frame.waitFor(selector)](#framewaitforselector)
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- [class: Request](#class-request)
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* [request.headers](#requestheaders)
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* [request.method](#requestmethod)
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* [request.response()](#requestresponse)
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* [request.url](#requesturl)
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- [class: Response](#class-response)
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* [response.headers](#responseheaders)
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* [response.ok](#responseok)
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* [response.request()](#responserequest)
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* [response.status](#responsestatus)
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* [response.statusText](#responsestatustext)
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* [response.url](#responseurl)
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- [class: InterceptedRequest](#class-interceptedrequest)
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* [interceptedRequest.abort()](#interceptedrequestabort)
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* [interceptedRequest.continue()](#interceptedrequestcontinue)
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* [interceptedRequest.headers](#interceptedrequestheaders)
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* [interceptedRequest.isHandled()](#interceptedrequestishandled)
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* [interceptedRequest.method](#interceptedrequestmethod)
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* [interceptedRequest.postData](#interceptedrequestpostdata)
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* [interceptedRequest.url](#interceptedrequesturl)
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- [class: Headers](#class-headers)
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* [headers.append(name, value)](#headersappendname-value)
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* [headers.delete(name)](#headersdeletename)
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* [headers.entries()](#headersentries)
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* [headers.get(name)](#headersgetname)
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* [headers.has(name)](#headershasname)
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* [headers.keys()](#headerskeys)
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* [headers.set(name, value)](#headerssetname-value)
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* [headers.values()](#headersvalues)
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- [class: Body](#class-body)
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* [body.arrayBuffer()](#bodyarraybuffer)
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* [body.bodyUsed](#bodybodyused)
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* [body.buffer()](#bodybuffer)
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* [body.json()](#bodyjson)
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* [body.text()](#bodytext)
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- [Puppeteer](#puppeteer)
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* [Emulation](#emulation)
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* [class: Browser](#class-browser)
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+ [new Browser([options])](#new-browseroptions)
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+ [browser.close()](#browserclose)
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+ [browser.closePage(page)](#browserclosepagepage)
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+ [browser.newPage()](#browsernewpage)
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+ [browser.stderr](#browserstderr)
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+ [browser.stdout](#browserstdout)
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+ [browser.version()](#browserversion)
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* [class: Page](#class-page)
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+ [event: 'console'](#event-console)
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+ [event: 'dialog'](#event-dialog)
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+ [event: 'frameattached'](#event-frameattached)
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+ [event: 'framedetached'](#event-framedetached)
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+ [event: 'framenavigated'](#event-framenavigated)
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+ [event: 'load'](#event-load)
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+ [event: 'pageerror'](#event-pageerror)
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+ [event: 'request'](#event-request)
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+ [event: 'requestfailed'](#event-requestfailed)
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+ [event: 'requestfinished'](#event-requestfinished)
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+ [event: 'response'](#event-response)
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+ [page.$(selector, pageFunction, ...args)](#pageselector-pagefunction-args)
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+ [page.$$(selector, pageFunction, ...args)](#pageselector-pagefunction-args)
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+ [page.addScriptTag(url)](#pageaddscripttagurl)
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+ [page.click(selector)](#pageclickselector)
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+ [page.close()](#pageclose)
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+ [page.evaluate(pageFunction, ...args)](#pageevaluatepagefunction-args)
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+ [page.evaluateOnInitialized(pageFunction, ...args)](#pageevaluateoninitializedpagefunction-args)
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+ [page.focus(selector)](#pagefocusselector)
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+ [page.frames()](#pageframes)
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+ [page.goBack(options)](#pagegobackoptions)
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+ [page.goForward(options)](#pagegoforwardoptions)
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+ [page.httpHeaders()](#pagehttpheaders)
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+ [page.injectFile(filePath)](#pageinjectfilefilepath)
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+ [page.keyboard](#pagekeyboard)
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+ [page.mainFrame()](#pagemainframe)
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+ [page.navigate(url, options)](#pagenavigateurl-options)
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+ [page.pdf(options)](#pagepdfoptions)
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+ [page.plainText()](#pageplaintext)
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+ [page.press(key[, options])](#pagepresskey-options)
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+ [page.reload(options)](#pagereloadoptions)
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+ [page.screenshot([options])](#pagescreenshotoptions)
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+ [page.setContent(html)](#pagesetcontenthtml)
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+ [page.setHTTPHeaders(headers)](#pagesethttpheadersheaders)
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+ [page.setInPageCallback(name, callback)](#pagesetinpagecallbackname-callback)
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+ [page.setRequestInterceptor(interceptor)](#pagesetrequestinterceptorinterceptor)
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+ [page.setUserAgent(userAgent)](#pagesetuseragentuseragent)
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+ [page.setViewport(viewport)](#pagesetviewportviewport)
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+ [page.title()](#pagetitle)
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+ [page.type(text)](#pagetypetext)
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+ [page.uploadFile(selector, ...filePaths)](#pageuploadfileselector-filepaths)
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+ [page.url()](#pageurl)
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+ [page.userAgent()](#pageuseragent)
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+ [page.viewport()](#pageviewport)
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+ [page.waitFor(selector)](#pagewaitforselector)
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+ [page.waitForNavigation(options)](#pagewaitfornavigationoptions)
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* [class: Keyboard](#class-keyboard)
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+ [keyboard.down(key[, options])](#keyboarddownkey-options)
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+ [keyboard.modifiers()](#keyboardmodifiers)
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+ [keyboard.press(key[, options])](#keyboardpresskey-options)
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+ [keyboard.sendCharacter(char)](#keyboardsendcharacterchar)
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+ [keyboard.type(text)](#keyboardtypetext)
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+ [keyboard.up(key)](#keyboardupkey)
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* [class: Dialog](#class-dialog)
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+ [dialog.accept([promptText])](#dialogacceptprompttext)
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+ [dialog.dismiss()](#dialogdismiss)
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+ [dialog.message()](#dialogmessage)
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+ [dialog.type](#dialogtype)
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* [class: Frame](#class-frame)
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+ [frame.$(selector, pageFunction, ...args)](#frameselector-pagefunction-args)
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+ [frame.$$(selector, pageFunction, ...args)](#frameselector-pagefunction-args)
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+ [frame.childFrames()](#framechildframes)
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+ [frame.evaluate(pageFunction, ...args)](#frameevaluatepagefunction-args)
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+ [frame.isDetached()](#frameisdetached)
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+ [frame.isMainFrame()](#frameismainframe)
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+ [frame.name()](#framename)
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+ [frame.parentFrame()](#frameparentframe)
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+ [frame.url()](#frameurl)
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+ [frame.waitFor(selector)](#framewaitforselector)
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* [class: Request](#class-request)
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+ [request.headers](#requestheaders)
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+ [request.method](#requestmethod)
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+ [request.response()](#requestresponse)
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+ [request.url](#requesturl)
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* [class: Response](#class-response)
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+ [response.headers](#responseheaders)
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+ [response.ok](#responseok)
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+ [response.request()](#responserequest)
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+ [response.status](#responsestatus)
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+ [response.statusText](#responsestatustext)
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+ [response.url](#responseurl)
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* [class: InterceptedRequest](#class-interceptedrequest)
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+ [interceptedRequest.abort()](#interceptedrequestabort)
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+ [interceptedRequest.continue()](#interceptedrequestcontinue)
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+ [interceptedRequest.headers](#interceptedrequestheaders)
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+ [interceptedRequest.isHandled()](#interceptedrequestishandled)
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+ [interceptedRequest.method](#interceptedrequestmethod)
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+ [interceptedRequest.postData](#interceptedrequestpostdata)
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+ [interceptedRequest.url](#interceptedrequesturl)
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* [class: Headers](#class-headers)
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+ [headers.append(name, value)](#headersappendname-value)
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+ [headers.delete(name)](#headersdeletename)
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+ [headers.entries()](#headersentries)
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+ [headers.get(name)](#headersgetname)
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+ [headers.has(name)](#headershasname)
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+ [headers.keys()](#headerskeys)
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+ [headers.set(name, value)](#headerssetname-value)
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+ [headers.values()](#headersvalues)
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* [class: Body](#class-body)
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+ [body.arrayBuffer()](#bodyarraybuffer)
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+ [body.bodyUsed](#bodybodyused)
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+ [body.buffer()](#bodybuffer)
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+ [body.json()](#bodyjson)
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+ [body.text()](#bodytext)
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<!-- tocstop -->
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## Puppeteer
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Puppeteer is a Node library which provides a high-level API to control Chromium over the DevTools Protocol.
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Puppeteer provides a top-level require which has a [Browser](#class-browser) class.
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The following is a typical example of using a Browser class to drive automation:
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```js
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const {Browser} = require('puppeteer');
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const browser = new Browser();
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browser.newPage().then(async page => {
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await page.navigate('https://google.com');
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// other actions...
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browser.close();
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});
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```
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### Emulation
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Puppeteer supports device emulation with two primitives:
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- [page.setUserAgent(userAgent)](#pagesetuseragentuseragent)
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- [page.setViewport(viewport)](#pagesetviewportviewport)
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To aid emulation, puppeteer provides a list of device descriptors which could be obtained via the `require('puppeteer/DeviceDescriptors')` command.
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Below is an example of emulating iPhone 6 in puppeteer:
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```js
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const {Browser} = require('puppeteer');
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const devices = require('puppeteer/DeviceDescriptors');
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const iPhone = devices['iPhone 6'];
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const browser = new Browser();
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browser.newPage().then(async page => {
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await Promise.all([
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page.setUserAgent(iPhone.userAgent),
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page.setViewport(iPhone.viewport)
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]);
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await page.navigate('https://google.com');
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// other actions...
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browser.close();
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});
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```
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List of all available devices is available in the source code: [DeviceDescriptors.js](https://github.com/GoogleChrome/puppeteer/blob/master/DeviceDescriptors.js).
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### class: Browser
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Browser manages a browser instance, creating it with a predefined
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@ -316,13 +358,6 @@ Adds a `<script></script>` tag to the page with the desired url. Alternatively,
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#### page.close()
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- returns: <[Promise]> Returns promise which resolves when page gets closed.
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#### page.emulate(name)
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- `name` <[string]> A name of the device to be emulated. Get the full list of emulated devices via `page.emulatedDevices()`.
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- returns: <[Promise]> Returns promise which resolves when device is emulated. Can reload the page if switching between mobile and desktop devices.
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#### page.emulatedDevices()
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- returns: <[Array]<[String]>> Returns array of device names that can be used with `page.emulate()`.
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#### page.evaluate(pageFunction, ...args)
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- `pageFunction` <[function]> Function to be evaluated in browser context
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- `...args` <...[string]> Arguments to pass to `pageFunction`
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@ -521,8 +556,14 @@ browser.newPage().then(async page =>
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- `viewport` <[Object]> An object with two fields:
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- `width` <[number]> Specify page's width in pixels.
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- `height` <[number]> Specify page's height in pixels.
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- `deviceScaleFactor` <[number]> Specify device scale factor (could be though of as dpr). Defaults to `1`.
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- `isMobile` <[boolean]> Weather the `meta viewport` tag is taken into account. Defaults to `false`.
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- `hasTouch`<[boolean]> Specify if viewport supports touch events. Defaults to `false`
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- `isLandscape` <[boolean]> Specify if viewport is in the landscape mode. Defaults to `false`.
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- returns: <[Promise]> Promise which resolves when the dimensions are updated.
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Note: in certain cases, setting viewport will reload the page so that the `isMobile` or `hasTouch` options will be able to interfere in project loading.
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The page's viewport size defines page's dimensions, observable from page via `window.innerWidth / window.innerHeight`. The viewport size defines a size of page
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screenshot (unless a `fullPage` option is given).
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@ -549,9 +590,7 @@ This is a shortcut for [page.mainFrame().url()](#frameurl)
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- returns: <[string]> Returns user agent.
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#### page.viewport()
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- returns: <[Object]> An object with two fields:
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- `width` <[number]> Page's width in pixels.
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- `height` <[number]> Page's height in pixels.
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- returns: <[Object]> An object with the save fields as described in [page.setViewport](#pagesetviewportviewport)
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#### page.waitFor(selector)
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@ -14,38 +14,7 @@
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* limitations under the License.
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*/
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const DeviceDescriptors = require('./DeviceDescriptors');
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class EmulationManager {
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/**
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* @return {!Promise<!Array<string>>}
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*/
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static deviceNames() {
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return Promise.resolve(DeviceDescriptors.map(device => device.name));
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}
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/**
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* @param {string} name
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* @param {!Object=} options
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* @return {!Page.Viewport}
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*/
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static deviceViewport(name) {
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const device = DeviceDescriptors.find(device => device.name === name);
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if (!device)
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throw new Error(`Unable to emulate ${name}, no such device metrics in the library.`);
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return device.viewport;
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}
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/**
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* @param {string} name
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*/
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static deviceUserAgent(name) {
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const device = DeviceDescriptors.find(device => device.name === name);
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if (!device)
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throw new Error(`Unable to emulate ${name}, no such device metrics in the library.`);
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return device.userAgent;
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}
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/**
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* @param {!Connection} client
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* @param {!Page.Viewport} viewport
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18
lib/Page.js
18
lib/Page.js
@ -349,24 +349,6 @@ class Page extends EventEmitter {
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return this._viewport;
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}
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/**
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* @return {!Promise<!Array<string>>}
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*/
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static emulatedDevices() {
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return EmulationManager.deviceNames(name);
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}
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/**
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* @param {string} name
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* @return {!Promise}
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*/
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emulate(name) {
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return Promise.all([
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this.setUserAgent(EmulationManager.deviceUserAgent(name)),
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this.setViewport(EmulationManager.deviceViewport(name))
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]);
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}
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/**
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* @param {function()} pageFunction
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* @param {!Array<*>} args
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58
test/test.js
58
test/test.js
@ -30,6 +30,9 @@ let EMPTY_PAGE = PREFIX + '/empty.html';
|
||||
let HTTPS_PORT = 8908;
|
||||
let HTTPS_PREFIX = 'https://localhost:' + HTTPS_PORT;
|
||||
|
||||
const iPhone = require('../DeviceDescriptors')['iPhone 6'];
|
||||
const iPhoneLandscape = require('../DeviceDescriptors')['iPhone 6 landscape'];
|
||||
|
||||
const headless = (process.env.HEADLESS || 'true').trim().toLowerCase() === 'true';
|
||||
if (process.env.DEBUG_TEST)
|
||||
jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000 * 1000 * 1000;
|
||||
@ -851,6 +854,12 @@ describe('Puppeteer', function() {
|
||||
let request = await server.waitForRequest('/empty.html');
|
||||
expect(request.headers['user-agent']).toBe('foobar');
|
||||
}));
|
||||
it('should emulate device user-agent', SX(async function() {
|
||||
await page.navigate(PREFIX + '/mobile.html');
|
||||
expect(await page.evaluate(() => navigator.userAgent)).toContain('Chrome');
|
||||
await page.setUserAgent(iPhone.userAgent);
|
||||
expect(await page.evaluate(() => navigator.userAgent)).toContain('Safari');
|
||||
}));
|
||||
});
|
||||
describe('Page.setHTTPHeaders', function() {
|
||||
it('should work', SX(async function() {
|
||||
@ -987,6 +996,30 @@ describe('Puppeteer', function() {
|
||||
await page.setViewport({width: 123, height: 456});
|
||||
expect(page.viewport()).toEqual({width: 123, height: 456});
|
||||
}));
|
||||
it('should support mobile emulation', SX(async function() {
|
||||
await page.navigate(PREFIX + '/mobile.html');
|
||||
expect(await page.evaluate(() => window.innerWidth)).toBe(400);
|
||||
await page.setViewport(iPhone.viewport);
|
||||
expect(await page.evaluate(() => window.innerWidth)).toBe(375);
|
||||
await page.setViewport({width: 400, height: 300});
|
||||
expect(await page.evaluate(() => window.innerWidth)).toBe(400);
|
||||
}));
|
||||
it('should support touch emulation', SX(async function() {
|
||||
await page.navigate(PREFIX + '/mobile.html');
|
||||
expect(await page.evaluate(() => 'ontouchstart' in window)).toBe(false);
|
||||
await page.setViewport(iPhone.viewport);
|
||||
expect(await page.evaluate(() => 'ontouchstart' in window)).toBe(true);
|
||||
await page.setViewport({width: 100, height: 100});
|
||||
expect(await page.evaluate(() => 'ontouchstart' in window)).toBe(false);
|
||||
}));
|
||||
it('should support landscape emulation', SX(async function() {
|
||||
await page.navigate(PREFIX + '/mobile.html');
|
||||
expect(await page.evaluate(() => screen.orientation.type)).toBe('portrait-primary');
|
||||
await page.setViewport(iPhoneLandscape.viewport);
|
||||
expect(await page.evaluate(() => screen.orientation.type)).toBe('landscape-primary');
|
||||
await page.setViewport({width: 100, height: 100});
|
||||
expect(await page.evaluate(() => screen.orientation.type)).toBe('portrait-primary');
|
||||
}));
|
||||
});
|
||||
|
||||
describe('Page.evaluateOnInitialized', function() {
|
||||
@ -1054,31 +1087,6 @@ describe('Puppeteer', function() {
|
||||
}));
|
||||
});
|
||||
|
||||
describe('Page.emulate', function() {
|
||||
it('should respect viewport meta tag', SX(async function() {
|
||||
await page.navigate(PREFIX + '/mobile.html');
|
||||
expect(await page.evaluate(() => window.innerWidth)).toBe(400);
|
||||
await page.emulate('iPhone 6');
|
||||
expect(await page.evaluate(() => window.innerWidth)).toBe(375);
|
||||
await page.setViewport({width: 400, height: 300});
|
||||
expect(await page.evaluate(() => window.innerWidth)).toBe(400);
|
||||
}));
|
||||
it('should enable/disable touch', SX(async function() {
|
||||
await page.navigate(PREFIX + '/mobile.html');
|
||||
expect(await page.evaluate(() => 'ontouchstart' in window)).toBe(false);
|
||||
await page.emulate('iPhone 6');
|
||||
expect(await page.evaluate(() => 'ontouchstart' in window)).toBe(true);
|
||||
await page.setViewport({width: 100, height: 100});
|
||||
expect(await page.evaluate(() => 'ontouchstart' in window)).toBe(false);
|
||||
}));
|
||||
it('should emulate UA', SX(async function() {
|
||||
await page.navigate(PREFIX + '/mobile.html');
|
||||
expect(await page.evaluate(() => navigator.userAgent)).toContain('Chrome');
|
||||
await page.emulate('iPhone 6');
|
||||
expect(await page.evaluate(() => navigator.userAgent)).toContain('Safari');
|
||||
}));
|
||||
});
|
||||
|
||||
describe('Page.screenshot', function() {
|
||||
it('should work', SX(async function() {
|
||||
await page.setViewport({width: 500, height: 500});
|
||||
|
||||
Loading…
Reference in New Issue
Block a user