By Rob Friesel
Over 70 recipes to assist advance the productiveness of your functions utilizing real-world checking out with PhantomJS with this e-book and book assessment examine the basics of operating with the headless PhantomJS browser Create unit and practical try out suites sponsored by means of PhantomJS combine PhantomJS into improvement and checking out workflows for effective unit trying out intimately starting with the fundamentals of PhantomJS, this publication will dive into its middle modules and consultant you thru the way to remedy real-world trying out difficulties. This publication explores various attempt automation initiatives, together with executing javascript unit assessments with the Jasmine, QUnit, and Mocha frameworks practical assessments with instruments resembling Selenium, Capybara, and CasperJS functionality research with instruments comparable to YSlow and lots more and plenty extra. while you're an internet developer seeking to run automatic unit exams once you paintings, or maybe you're a QA engineer trying to find a quick attempt automation application, then this publication is ideal for you. a few earlier wisdom of javascript will be invaluable. What you are going to examine from this ebook advance your individual PhantomJS middle modules examine subtle suggestions for interacting with website contents and the way to catch these interactions Create a front-end non-stop integration (CI) process with PhantomJS practice unit checking out with frameworks equivalent to Jasmine, Mocha, and QUnit enforce sensible and end-to-end trying out with PhantomJS utilizing instruments resembling Selenium, Capybara, and CasperJS Automate functionality research with libraries resembling Confess.js and YSlow Automate the iteration of pictures and PDFs of your websites
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Disk-cache We can enable the disk cache by setting the disk-cache argument to true or yes. By default, the disk cache is disabled, but we can also explicitly disable it by providing false or no to the command-line argument. When the disk cache is enabled, PhantomJS will cache assets to the on-disk cache, which it stores at the desktop services cache storage location. Caching these assets has the potential to speed up future script runs against URLs that share those assets. 21 Getting Started with PhantomJS max-disk-cache-size Optionally, we may also wish to limit the size of the disk cache (for example, to simulate the small caches on some mobile devices).
In those cases, it is comforting to know that you have these debug tools at your disposal. One important thing to note about using the remote debugger with PhantomJS is that we will need to be aware of what context we are attempting to debug. Are we debugging the PhantomJS script itself? Or a script on the page that the PhantomJS script is accessing? Or some interaction between them? In the simple case (as previously demonstrated), the remote debug mode makes it almost trivial to inspect our PhantomJS script's execution at runtime.
Js installed. js How to do it… Select our command-line configuration options (changing hyphenated property names into their camel-cased equivalents) and apply our values. Save these configuration settings to a JSON-formatted document. org. js How it works… The configuration file is a JSON document where we can take our preferred command-line arguments and store them on disk. The keys in the JSON object have a one-to-one correspondence with the command-line arguments themselves – the hyphenated command-line argument names are converted to their camel-cased versions (for example, cookies-file becomes cookiesFile).