Voting to close as tool rec. If you have a large page, scoping your Capybara page assertions can be considered a good practice. Update your dependencies When googling, I found many concurrency-related issues filed for the various dependencies. Notify me of new comments via email. Leave a Reply Cancel reply Enter your comment here I have not ultimately solved the intermittent failures , but I have significantly decreased their frequency, making the test suite more usable. In RSpec, we add a js:

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Even though the whole point is to run WebKit without windows, the compilation process has dependencies on Qt.

Stack Overflow works best with JavaScript enabled. The PR was https: It always raises an error if there is more than one match, similar to: Very similar to the custom rack middleware discussed above, but baked into and maintained by capybara, hooray! Coffee 2, 33 88 Introduction In this article, we’ll cover five tips for writing effective Capybara tests, and capyara to use them with RSpec and Minitest.

If capybsra found this article useful, you might want to check out other articles on testing in the Semaphore Community.

They are called in the same way with both RSpec and Minitest.

5 Tips for More Effective Capybara Tests

Things did get better. For example, if you’re working on a component which has a sign up button, when there’s already a sign up button further up the page, you might ajvascript up never testing the second one unless you scope your page lookup query.


To fix it, you need to make sure Capybara is waiting for results, and willing to wait long enough.

Rather than litter js: When Capybara is waiting, how long is it willing to wait before giving up? I had not previously had any experience with new generation front-end JS front-end frameworks. This also adds some safety for websites that use some JavaScript but not on all pages. Sometimes, you can identify how the previous test affects the current one that is randomly failing. Although something like pry is useful if you want to see the state of your variables, sometimes we want to know what is going on with the HTML on our web page.

JavaScript Testing with Selenium & Capybara-Webkit – Jumpstart Lab Curriculum

To find out more, including how to control cookies, see here: The first one matches on exact count. It’s also possible to configure how Capybara handles matching. The first one is called: It’s very simple to get running but I can’t find a nice way to execute the Cheerio scrape against rendered javascript, like in single page apps. Michelle Tilley k 30 It’s also possible to evaluate JavaScript and store the return in a variable in Ruby.

Testbut the power of a full, real-world JavaScript interpreter.


Jumpstart Lab Curriculum

Using Selenium means that your tests will be running using Firefox. However, for matching, the behavior changes depending on if Capybara.

Concurrency in Rails 5. To understand why your tests are failing unreliably and what you can do about it, you need to understand the concurrent architecture of a Capybara JS feature test as above, and these areas of potential race conditions.

Which test was the previously run test will vary every run with a different seed, using rspec random testing. With javsscript RSpec and Minitest, this is not enabled by default, and javasccript have to tell them to use Capybara with the JavaScript driver for indvidual tests that need it.

Unfortunately, this makes them much, much slower than when you were running the tests using rspec. Better just fix your test to wait properly on the expected UI, if you at all can.

If you turn off random test capybra, all your feature tests end up running in sequence together, and all your other tests end up running in sequence together, without intermingling.